ESPHome 2026.11.0: Lighter builds and tougher updates

Nov 18, 2026

NOTE

This is a beta release. Details on this page may change before the stable release is published.

ESPHome publishes a release like this each month, so you can see what’s new, what’s fixed and anything to be aware of before you update.

Short on time? Here’s the quick version

This is the short, plain-language version for anyone short on time or still finding their way around ESPHome. The full technical post continues below.

Sub-devices: every entry under esphome: devices: now needs a relation: field – via for a separate physical device reached through this node, child for a logical part of this node.
HTTP requests in scripts: http_request.get, .post and .send no longer pause the script, so add mode: queued or mode: parallel where repeated runs must not be skipped.
ESP-IDF minimum version: if your ESP32 build pins the ESP-IDF framework to a 5.0 version, move it to 5.1 or newer (or remove the pin).

New features: ESPHome uses less memory on every supported chip, especially the ESP8266, and the way automations are built now produces smaller, faster code.

Also in this release: over thirty new components plus many smaller fixes and improvements.

If you’re running a typical config, there’s nothing else you need to check before updating – aside from the items above.

For the full release overview and technical detail – including anything that affects custom lambdas, external components or non-standard setups – keep reading below.

Components added in this release

ESP32 ULP coprocessor

OTA Updates for nRF52 (Adafruit BLE)

Particulate & CO2 & Volatile organics & Temp & Humidity

Aranet BLE

CO2 & Radon & Radiation

DFRobot SEN0465 Gas Sensors

O2 & CO & H2S & NH3 & ...

Vevor DTX Weather Station

Spectral Color Sensor (deprecated)

AS7341 / AS7343 / TCS3448

Spectral Color Sensor

14-Bit Magnetic Angle Sensor

DFRobot SEN0609 mmWave Radar

Motion & Presence

ICM-20689

Accelerometer & Gyroscope

Airton Serial Climate

HT16K33 Character Display

SH1122

ST7305

M5Unit-BLDC

TMC2209 Stepper Driver

Power Management Core

ESP32 Power Management

Seeed Studio Multi-Channel Relay

Release overview

ESPHome 2026.11.0 is a framework release. Another large sweep of entity names, filter tables and lookup strings leaves RAM on ESP8266 and lives in flash on every platform. Scheduler timers lose their string names, cover, fan, valve and lock traits pack into one byte, and several components switch from heap vectors to fixed buffers. The generated code for automations now compiles to plain C++ control flow, saving about 1.6 KB of RAM on ESP8266 and ESP32 IDF for a modest configuration.

Codegen gets a wave of shared helpers, so new components and migrations need less boilerplate: new Apply entity classes for hub-forwarding buttons, switches, numbers and selects, SUB_* and PUBLISH_STATE macros for child entities, and byte, I2C, UART, BLE and modbus helpers that roll out across dozens of drivers. The minimum ESP-IDF rises to 5.1, LibreTiny goes to 1.14.0 with BDK 3.0.78 on Beken chips, and esp_hosted moves to 3.0.10. Native ESPHome OTA now falls back to UDP when the link is lossy, so uploads finish on Wi-Fi that would stall the previous TCP data phase. wifi: ap: with web_server: now serves the interface as a captive portal, the DHCP lease is cached across reboots and Wi-Fi Easy Connect lands on ESP32.

OpenThread on ESP32 gains an experimental border router that bridges Thread to Wi-Fi. nRF52 picks up a crash coredump, a native toolchain entry, a dongle board, BLE OTA through the Adafruit bootloader and SMP-over-UDP. HTTP requests from automations no longer block the main loop, the logger buffers early boot lines for later replay over the API, and the web server stops exposing internal entities over REST. This release also adds over thirty new components, including Daikin Madoka BLE, USB audio and keyboard, an RTSP server, a VNC client, BLE MIDI, HDMI-CEC and the ESP32 ULP coprocessor, twelve new climate IR platforms, and many new sensors, radars and expanders. A short codebase-correctness sweep closes memory, event-decoding and REST-visibility bugs.

Upgrade checklist

If you use esphome: devices: for sub-devices, add relation: via (separate physical device) or relation: child (logical part of this node) to every entry.
If you use OpenThread on ESP32, make sure your build uses ESP-IDF 5.5.5 or newer; remove any pinned esp32.framework.version older than that.
If you target the ESP32 with ESP-IDF, remove any pin to ESP-IDF 5.0.x; the minimum is now 5.1.
If you use esp32_hosted, require ESP-IDF 5.5 or newer, add d1_pin on a 1-bit SDIO setup, and remove active_high: false (use the default; active_high: true works with a deprecation warning).
If you use OpenThread on ESP32 without anything else that needs IPv4, add network: enable_ipv4: true to keep IPv4 on.
If you use http_request actions inside a script, set mode: queued or mode: parallel where repeated runs must not be skipped; actions no longer block the script.
If you have clk_mode: on the ethernet: component, move it to the clk: block with mode: and pin:.
If you have provider: on dlms_meter:, drop it; for provider: netznoe add the two custom_patterns from the release notes.
If you have DLMS meter sensors using predefined keys such as voltage_l1 or timestamp, replace each with its own entity using obis_code.
If you have update_on_release: on an LVGL number, replace it with trigger: on_release.
If you have dump_device_info: on nextion:, delete it; device info is always logged.
If you have platform: qspi_amoled, change it to platform: qspi_dbi.
If you use delay, wait_until or script.wait inside emonTx on_json/on_data, MQTT on_json_message, or Haier on_status_message, copy the values you need into globals first and defer from a separate script.
If you drive internal entities through the web server REST API by URL, add include_internal: true under web_server:.
If you have NEC remote_transmitter.transmit_nec actions with command_repeats above 10 or equal to 0, change them to a value between 1 and 10.
If you have on_nec lambdas comparing x.command_repeats, update them - the value is always 1 now and the check no longer works.
If you have Panasonic IR configs captured from a 56-bit remote, run the dumper again and update address_2 and command.
If you have MagiQuest on_magiquest lambdas comparing x.wand_id or x.magnitude, re-dump and use the new values.
If you have a canbus.send with a constant payload longer than 8 bytes, shorten it to at most 8 bytes.
If you use esp32_rmt_led_strip, remote_transmitter or remote_receiver with a custom rmt_symbols or multiple components, re-run validation; conflicts and invalid sizes now fail at config time.
If you use color_bwr e-paper panels (WeAct 3C, Waveshare B, Waveshare BWR, Inkplate 2), expect color mapping to change; the test card and lambdas on WeAct 3C or Waveshare 7.5” V2 BWR also change because they now report DISPLAY_TYPE_COLOR.
If you use the CB3S board (LN-CB3S V1.0) with the D12 alias, update your pin to D13 or PA11; D12 now drives PA10.

ESP8266 RAM diet and framework-wide flash tables

ESP8266 keeps on a strict RAM budget, and this release shaves another large chunk off it by moving constant tables and strings into flash. Entity names, device classes, icons, log tags, filter tables, effect lists, enum option lookups and action payloads now live in flash on every build, and are only copied into RAM when a component actually uses them. Led by @bdraco, close to a hundred PRs touch this area, across core helpers like ConstVector, PROGMEM_STRING_TABLE, cg.extern_progmem_array and ESPHOME_LOG_TAG, and the component rollouts that use them.

Entity names and icons in flash - name:, icon: and device class strings are read straight from flash on ESP8266, and the native API sends them straight from flash too (#20423, #21106, #21111).
Filter, effect and lookup tables moved to flash - sensor filter tables, light effect lists, climate presets, alarm codes, switch and button payloads, remote IR codes, radar settings and dozens of per-driver lookup tables now sit in flash and are shared across instances (#20071, #20074, #20076, #20078, #20080, #20082, #20083, #20204, #20222, #20394).
Web server strings off RAM - the remaining ESP8266 web server strings, resource tables and entity domain names move to flash (#20300, #21113, #21115).
Manual IP settings in flash - manual Wi-Fi and Ethernet IP settings are stored in flash on ESP8266 too (#21708, #21712).
Shared switch lookup tables - ESP8266 switch lookup tables leave RAM (#20398).

Lower RAM for every component instance

RAM savings continue beyond ESP8266. Scheduler timers no longer carry a per-component name string, several trait flag bytes are packed, and the big automation code generation rewrite below shrinks the framework object graph. Numbers below are from the PR measurements against the current release line.

Numeric scheduler IDs - scheduler timers now match components by small integer IDs rather than string literals, so lookups become integer compares. The change rolls through core, climate, select, Tuya, Dallas, Modbus, speaker, Zigbee, voice_assistant and many sensor drivers (#20361, #20365, #20367, #20368, #20374, #20375, #20376, #20377, #20378, #20380, #20381).
Trait flag packing - Cover, fan, valve and lock traits pack their boolean flags into single bytes, and esp32_rmt_led_strip reshuffles members to fit base class padding (#21339, #21340, #21343, #21344, #21838).
No duplicated storage - MQTT rebuilds subscription topics on demand instead of storing them, and components such as bedjet, nfc, thermopro_ble, graph, mqtt_subscribe, key_collector, display_menu_base, bme680_bsec and tuya stop copying strings they only read (#20762, #21204, #21205, #21206, #21207, #21208, #21209, #21210, #21211, #21212).
Fixed-size buffers replace heap allocations - radar components, GPS listeners, speaker pipelines, usb_uart buffers and the Weikai UART driver use fixed-size storage and ring buffers instead of growing heap vectors (#20379, #21201, #21203, #21347, #21476, #21478).

Automations compile to C++ control flow

Led by @clydebarrow, the code generator for automations has been rebuilt. if, choose, while, repeat and runs of simple actions no longer need an action object per step; they compile straight into the generated function as C++ control flow. On a test config with eight automations of three actions each, the stack of changes saves 1632 bytes of RAM and 1216 bytes of flash on ESP8266, and 1632 bytes of RAM and 1628 bytes of flash on ESP32 IDF. Lambda and script.execute chains no longer grow the stack along the way.

Adjacent actions merge - runs of register_apply_action and lambda: actions become one generated function and one object (#21978).
Inline callback automations run directly - a trigger whose actions are all inline calls the generated function straight from the callback, with no automation object (#21979).
Control flow turns into C++ - if, choose, while and repeat with inline bodies become if, switch, while and for in the generated function. The change also fixes a bug where a false condition inside a nested while could stop its outer parallel script (#21980).

Codegen helpers for component authors

A second large framework effort, driven mostly by @bdraco, standardises how components are described in Python. Nine helpers do work that was previously hand-written per component: new_i2c_component, new_uart_component, new_spi_component, options() for enum keys, cg.add_pin, cg.add_variable, cg.add_optional, assign_bits and register_parented. The SUB_* macros declare child entities with one line and the PUBLISH_STATE macro publishes them with one more, so hub drivers no longer repeat if (pointer) pointer->publish_state(value) for each sub-entity. A new Apply entity family lets a hub forwarding button, switch, number or select ship as a single Python line and no C++ class at all. Component authors can see the new helpers in AGENTS.md; these are migration tracks that touch dozens of components and shrink the codebase without changing behaviour.

Apply entities - new ApplyButton, ApplySwitch, ApplyNumber, ApplySelect, ApplyBytes and ApplyOutput classes, plus their roll-out across LD2410, LD2420, LD2450, DFRobot SEN0395/SEN0609, Airton, Haier, Tuya, Micronova and the core safety switches (#20935, #20937, #20964, #20965, #20966, #20967, #21146, #21147, #21148, #21158, #21162, #21163, #21251, #21252, #21253, #21262, #21263, #21519, #21659, #21662, #21673, #21675, #21677).
Shared I2C, UART and BLE helpers - update_register, write_registers, check_chip_id, read_available, discard_available, LineReader, FrameReader, encode_uint16/24, put_be/put_le, sum_bytes, xor_bytes, sum16_bytes, sign_extend, the shared BCD and color helpers and new_ble_component/new_modbus_component migrate 20+ I2C drivers, the whole UART component set, BCD and byte-order code in many RTC and sensor drivers (#20507, #20855, #20861, #20907, #20909, #20911, #20919, #20920, #20922, #20934, #20938, #20939, #20941, #20943, #20945, #20946, #20948, #20956, #21026, #21080, #21082, #21083, #21084, #22212).
Follow entities from codegen - the copy, switch, number and text follow-entity publishers are now built from codegen expressions instead of hand-formatted strings (#22103, #21610, #21612).
SUB_ and PUBLISH_STATE rollout* - child entities across ~150 components declare their pointers with SUB_* macros and publish through PUBLISH_STATE in a single call (#21726, #21770 through #21777, #21808 through #21810, #21848 through #21852).

ESP-IDF 5.1 floor and library refresh

The minimum ESP-IDF rises to 5.1 and three major vendor libraries are refreshed, so builds stop configuring with deprecated symbols and devices built on them stop hitting the known bugs. LibreTiny now defaults to 1.14.0 with Beken BDK 3.0.78 on BK7231N and BK7231T, which fixes WPA3 support on those chips, stops the BK7231T captive portal from losing saved credentials and fixes a watchdog trip during web OTA (#21531). esp_hosted on the ESP32-P4 and Tab5 jumps to 3.0.10, which repairs 1-bit SDIO and no longer erases the co-processor partition at OTA begin (#21394). esp-zigbee-sdk rises to 2.0.5 and esp-audio-libs to 4.1.0 (#20998, #20754). The GCC 12 toolchain that ships with ESP-IDF 5.1 also lets ESPHome drop its 5.0-specific workarounds, so basename debug flags apply everywhere and CONFIG_SW_COEXIST_ENABLE is written under its current name (#21398). espressif/esp-adf-libs and espressif/esp-hosted binaries are now downloaded and cached rather than carried in the repository (#20065).

OTA uploads that finish on bad Wi-Fi

Led by @bdraco, the native ESPHome OTA protocol now falls back to UDP when the TCP handshake shows the link is lossy. The full TCP handshake still runs first, and the data phase moves to UDP only when it is worth it; everything stays encrypted when Noise is configured. On an ESP32 next to the laptop, a clean upload takes 13 to 16 seconds on UDP against 36 to 70 seconds on TCP, and an upload with 65% loss added finishes in just over three minutes where TCP fails every time (#20498). The companion client adds a few patience changes to match: handshake timeouts rise from 20 to 60 seconds, up to five attempts for a first connection and nine once the device is reached, so a slow Wi-Fi recovery no longer gives up early. --prompt-ota-key and old_key options let an upload retry with a fresh or previous OTA key when the device has already moved on (#19397, #19398).

Networking and provisioning without the cloud

A set of connectivity features make setting up a device easier when there is no router or internet involved. Led by @bdraco, configuring wifi: ap: together with web_server: now serves the embedded web interface as a captive portal, with a DNS server that redirects every name to the AP address, so a phone opens the page automatically like a hotel sign-in (#18517). The WISP feature introduced last cycle adds ap_mode: ALWAYS_ON, a captive portal option and ESP32 Arduino support (#20077, #21410), and the WISP AP can be bridged to Ethernet or to a cellular modem link (#7147, #21584).

Wi-Fi Easy Connect (DPP) - QR-code provisioning for ESP32 devices (#17934).
DHCP lease cache - keeps the previous lease across reboots to reconnect faster (#17767).
IPv4 and IPv6 on demand - network: enable_ipv4 and enable_ipv6 default from what components actually need; an OpenThread-only ESP32 builds without the IPv4 stack now (#14526).
IPv6 for Zephyr and UDP - UDP gets IPv6 unicast and multicast across platforms, and nRF52 gains IPv6 support (#17838, #20590).

OpenThread border router on ESP32

Led by @pputerla, the openthread component gains an ESP32 border router mode. An ESP32-C5 or C6 bridges its native 802.15.4 radio to Wi-Fi, and the other Wi-Fi ESP32 variants bridge an external radio co-processor over UART. Thread starts at boot, border routing starts once Wi-Fi has an address, and the SDK is driven from a single OpenThread task under one lock so clean reboots work. OpenThread on ESP32 now needs ESP-IDF 5.5.5 or newer, which has been the default for a few releases (#18104). The feature is marked experimental: the native radio ran for two weeks without a restart in testing, while the external RCP mode hung occasionally during a three-week soak.

nRF52 catches up

nRF52 devices gain several platform-level features. Led by @tomaszduda23, the new zephyr_coredump component stores a crash dump in flash and prints it hex-encoded once a log reader connects; Zephyr’s tooling then turns the log into a GDB backtrace. @swoboda1337 moves sdk-nrf into the native toolchain list, so nRF52 builds no longer write an unused platformio.ini, esphome idedata works, memory analysis has one less code path and platformio_options behave like on ESP-IDF (#21704). The nRF52840 dongle is a supported board (#19009), nRF52 can now be flashed and updated over BLE with the Adafruit bootloader in addition to MCUboot (#20481), zephyr_mcumgr adds an SMP-over-UDP OTA transport (#17245), the logger adds CDC UART through usb_cdc_acm on nRF52 (#11634) and debug logs per-thread CPU usage (#13938). The esp32_ble_server gets secure connections with numeric comparison (#17562).

Developer infrastructure

Several changes make ESPHome itself easier to build and debug. CodSpeed benchmarks ride along with the Python code, so component import time, entity validation, image and runtime image decoding, and sensor platform setup are all tracked over time (#20603, #20637, #20648, #20649, #20763). The CI’s hardware-test skill picks up new flows that cover SEN0395, LD2412, LD2450, LD24xx variants, Xiaomi BLE, MQTT TLS and WebSocket, GPIO hold, BLE light sleep, HTTP-request OTA, manual IP, web OTA, LD2450 zones and more (#21160, #21229, #21264, #21356, #21414, #21549, #21636, #21724). Each build path ESPHome ships is now compiled on a Windows runner and an ESP8266 native config also builds on Windows (#20467, #21791). esphome upload works without a configuration file, so a prebuilt image can be flashed from the CLI (#21738). clang-tidy 23 is clean across the tree after a cleanup pass by @swoboda1337 (#21301, #21334, #21335, #21336, #21338).

Non-blocking HTTP requests and boot log replay

Two automation-side features let devices do more work in the background. @clydebarrow reworked http_request.get, .post and .send into asynchronous actions driven by the component’s loop(). On an ESP32-S3, the main loop stall for a plain HTTPS GET drops from 2.4 to 3.6 seconds to about 0.3 seconds, and for a 70 KB LAN download from 3.6 seconds to tens of milliseconds. Up to four extra requests queue, so overlapping triggers no longer run back to back. A script containing one of these actions is still running while the request is in flight, so a mode: single script that used to fit inside execute() now has to use mode: queued or mode: parallel when it needs to overlap (#21486). A per-request timeout: option lands in the same area (#20821).

The logger also gains an optional boot_log_buffer_size: and a matching logger.replay_boot_logs: action. Lines captured from the moment the logger starts are replayed over the native API when the first client connects, so a warning that fired before Wi-Fi came up is still visible later (#17666). The buffer is a compile-time member, nothing allocates on the heap, and the option compiles out entirely when unset. boot_log_level: and per-tag boot_logs: tune what is kept, and dropped lines are counted so the summary says how much was lost.

New components: sensors and GPIO expanders

Many new sensor and expander components ship this release. All are listed with short notes; configuration lives in their own documentation.

Aranet BLE sensor by @patrickod - passive Bluetooth LE advertisement reader for Aranet4, Aranet2, Aranet Radiation, Aranet Radon Plus and Aranet Radon One monitors.
APDS9930 by @iyesin - Broadcom ambient-light and proximity I2C sensor.
APC1 by @ademuri - ScioSense APC1 air-quality sensor on UART.
AS734x spectral hub by @latonita - AS7341, AS7343 and TCS3448 spectral sensors in one driver, with counts, illuminance, PAR, PPFD, colour temperature and RGB.
BH1745 by @latonita - ROHM colour sensor with illuminance and colour-temperature output and an LED driver output.
BQ25186 by @Rapsssito - TI 1-cell linear battery charger with status sensors, buttons, a PG/GPO switch and a watchdog option.
BQ27220 fuel gauge by @rggammon - TI single-cell Li-Ion fuel gauge with eight optional sensors.
BQ76972 BMS monitor by @limpkin - TI monitor for cell voltages, pack voltage and thermistor temperatures.
CW2017 fuel gauge by @exciton - CellWise fuel gauge; a battery_profile describes the cell.
DFRobot SEN0465 by @tzabbi - DFRobot SEN0465 to SEN0476 electrochemical gas probes with I2C and UART.
DFRobot SEN0609 radar by @remcom - C4001-based 25 m and 12 m mmWave radars (SEN0609 and SEN0610) with presence and speed-and-distance modes.
Delta AC wallbox by @epicRE - BLE driver reading model, state, power and energy and starting or stopping charging sessions; max charging current configurable at runtime.
DS3231 RTC by @linkedupbits and @miloit - Maxim real-time clock with time platform, alarms, 32 kHz/square-wave outputs and temperature sensor.
FUSB302B PD sink by @remcom - full USB Power Delivery sink with state, contract and automations.
HUSB238 PD controller by @latonita - Hynetek USB PD sink controller hub with binary sensors for attach and CC direction.
ICM-20689 by @lboue - TDK InvenSense 6-axis accelerometer and gyroscope over SPI, with on-chip temperature.
LD2410S radar by @NovakIrs - HI-LINK LD2410S presence radar with distance sensor and firmware version.
LD2460 radar by @jesusvallejo - Hi-Link multi-target tracking 24 GHz radar.
LD6004 radar by @wolph - Hi-Link 60 GHz presence radar on the new shared ld600x base.
LIS2DW12 by @latonita - ST 3-axis accelerometer with tap, double-tap, free-fall, activity and 6D orientation events.
LIS3DH by @Zebble - ST 3-axis accelerometer built on the shared motion platform.
MAX17048 fuel gauge by @B48D81EFCC and the shared max170xx helper by @ryansch - Analog Devices Li-ion fuel gauge.
MAX31888 by @JiriPrchal - Analog Devices 1-Wire temperature sensor.
MICS-5524 by @nliaudat - DFRobot MEMS multi-gas module that converts an existing ADC sampler into gas concentrations.
MT6701 by @slimcdk - MagnTek magnetic encoder over I2C or SPI.
NS2009 by @tchilov - Nsiway resistive touchscreen controller.
PCA9505 expander by @ajfriesen - NXP PCA9505 and PCA9506 40-channel GPIO expander with optional interrupt pin.
Renogy inverter BLE by @emilioaray-dev - reads a Renogy inverter with built-in Bluetooth over ble_client and publishes AC and battery values.
RX8111CE RTC by @techdregs - Epson I2C real-time clock as a time platform, with alarm and wake-up timer, FOUT and EVIN events, binary sensors and a backup-power status text sensor.
ST25R3916 NFC reader by @JohnMcLear - ISO 14443A tag reader over SPI, firing the shared on_tag and on_tag_removed automations.
TCA8418 keypad by @Zebble - TI I2C keypad scanner with matrix and direct inputs.
TMC2209 stepper driver by @remcom - Trinamic UART stepper driver with current and chopper tuning actions and stall detection.
TMP102 by @techdregs - TI digital temperature sensor with thermostat thresholds, alert pin and diagnostics text sensor.
VEML6040 by @aalaei - Vishay RGBW colour sensor.
VL53L1X by @will-tm - ST time-of-flight distance sensor with ROI and multiple-sensor support.
M5Stack units by @KoenBreeman and @lboue - M5Stack 4-Relay, the Seeed Grove multi-channel relay boards and the M5Stack M5Unit-BLDC brushless DC motor driver.

New major components

Beyond new sensors, several components open up new capabilities.

Daikin Madoka BRC1H climate by @Petapton - BLE control of the Daikin BRC1H (Madoka) wall controller: modes, setpoint, fan speed and reported temperatures, with MITM pairing and TLV response decoding.
HDMI-CEC bus by @JosVanEijndhoven - puts an ESPHome device on the HDMI-CEC bus of a TV, with on_message automations and a hdmi_cec.send action.
USB audio by @ab-tools - USB Audio Class host for ESP32 chips with USB OTG; plays audio on USB sound cards and DACs through speaker: platform: usb_audio and captures from USB mics through microphone: platform: usb_audio.
TinyUSB keyboard by @FrederikBolding - ESP32 with USB OTG appears as a HID keyboard with media keys.
Cellular modem networking by @oarcher - PPPoS over a UART cellular modem on ESP32, so api, mqtt and ota work on LTE; signal sensors and a network-type text sensor land alongside (#6721, #14683).
RTSP server by @max246 - streams the esp32_camera picture as Motion JPEG over RTSP, playable in VLC, ffplay, go2rtc and Frigate without anything ESPHome-specific.
VNC client by @MindFreeze - shows a VNC server’s screen on an ESPHome display, with Hextile encoding, password authentication, input actions and touchscreen forwarding.
BLE MIDI by @bogdanr - connects to a BLE MIDI device such as a pad controller, keyboard or foot switch, surfaces note, control-change and SysEx events as automations and can send MIDI back.
ESP32 ULP coprocessor by @swoboda1337 - builds a user C program for the ESP32-S2/S3 RISC-V ULP or the C5/C6/P4 LP core, embeds it in the firmware and exposes its globals to lambdas as ulp_<name>.
OpenThread border router - covered in its own section above.
Zigbee improvements by @luar123 - sleepy end device (SED) support on ESP32, a zigbee.report action and a configurable basic cluster with manufacturer and application version (#20487, #20488, #20519).
Power management by @rwrozelle - new power_management domain with an ESP-IDF dynamic frequency scaling platform and optional automatic light sleep.
Haier water heater by @TheLexus - controls Haier hOn water heaters such as the VH3W over UART in place of the original Wi-Fi module.
Fantini Cosmi Ecocomfort 2.0 VMC by @gledian - BLE control of Fantini Cosmi Aspirvelo Air Ecocomfort 2.0 Smart ventilation units, as a hub with a fan platform, read-only sensors and configuration entities (#17092, #15447, #20783).
Duco heat recovery ventilation by @kokx - Duco Energy Comfort D325 ventilation system with mode select, serial, CO2 and flow sensors.
Modbus monitor by @Bascht74 - on_request and on_response triggers for Modbus server and client hubs.
packet_interface by @clydebarrow - a layered packet framework with UART and UDP links, HDLC reliability, session and XXTEA encryption layers.
New climate IR platforms - Airton by @Procsiab, Friedrich MW12Y3H by @rwrozelle, Haier Tundra by @fauxpark, Islandaire PTAC by @ipopov, Midea PortaSplit by @Fexiven, Mistral MHFE1126A by @lerhum, Panasonic by @Duckle29, Pioneer mini-split by @martinsah, Remko AR-715 by @naKruul, Samsung by @jorofi, Siemens IRA211 by @fonix232, plus a separate Airton serial platform by @guiguid.
New display controllers - SH1122 OLED by @pl4nkton, ST7305 reflective LCD by @clydebarrow, HT16K33 character displays by @ilikecake, the SPD2010 touchscreen by @grischard and many new epaper_spi panels (GDEY0213F51, GDEY029Z95, GDEY029T94, Waveshare 2.13” G/B V3, Xteink X4 Pro, UC8151D, XSRUPB-7.5in-bwr) by various contributors.
New LED strip drivers - i2s_clockless_led_strip for WS281x/SK6812 strips via I2S DMA by @j9brown, and ln882x_spi_led_strip for LN882x chips by @sebo-b.
Other new components - APC Proteous gate motors by @clydebarrow, the ezsp_proxy_tap component by @puddly, the Vevor DTX weather station by @Bofr5555, the LP5562 4-channel LED driver by @DennisGaida, and a filter_lifetime sensor by @tuct.

Other notable features

Switch initial state - initial_state: and restore_state: work with flash or RTC storage for platforms whose switches do not have their own restore (#20978).
Light initial effect - initial_state: can now name an effect:, so a strip boots into its startup animation (#18795).
Globals in RTC memory - a persistent global can live in RTC RAM instead of flash, preserved across deep sleep without wearing out the flash (#13954).
Addressable light power estimation - LED strips can report the estimated current draw and limit it on the fly (#15348).
Sendspin as a source - the sendspin speaker protocol gains a source role, so a device can stream a microphone to a Music Assistant server (#21696).
i2s_audio full duplex - single-chip speakers and microphones can share one bus (#19959).
ESP32 OTA security - new signed_ota_verification and NVS encryption options in the esp32 block prepare devices for stronger OTA signing (#17562).
MQTT over WebSocket - WebSocket transport on ESP32 IDF and TLS option expansion (#14318, #16056), plus MQTT session persistence and a crash reporting channel (#12426, #17935).
Online image progressive decode - decode a JPEG as it downloads, with download start and progress triggers (#21342, #21355).
Runtime image speed-ups by @clydebarrow - JPEG decoding writes opaque RGB565 frames straight into the buffer, uses integer maths for grayscale and resize, and decodes at the smallest JPEGDEC scale that fits (#19454, #21386, #21387, #21390, #21393, #21784).
ESP32 RMT seat check - ESPHome checks at compile time that every esp32_rmt_led_strip, remote_transmitter and remote_receiver fits the chip’s RMT channels together, so a second strip no longer silently fails to start at boot (#22172).

Codebase correctness

Alongside the memory and codegen work, this cycle closes several real correctness gaps.

Deferring actions rejected where they would read freed memory - emontx, mqtt on_json_message and haier on_status_message now reject automations that contain delay, wait_until or script.wait. The received frame is only valid while the automation runs, so a deferring action used to read freed memory at runtime; configs now fail validation with a message pointing at the fix.
esp32_hosted co-processor update - updates size their OTA chunks from the host’s per-RPC limit, so the previous fixed 1500-byte chunk no longer fails every co-processor update (#21394).
libretiny crash reports - BK7238, BK7231N, LN882H and RTL8710B report the previous boot’s crash on reboot, following the ESP32 and ESP8266 crash handlers (#21007, #21012, #21648, #21728, #21752).
Remote protocol frame boundaries - NEC command_repeats now sends real NEC repeat frames, MagiQuest reads the full 56 bit frame and checks its checksum, and 56 bit Panasonic frames are decoded in full (#17663, #10622, #20260).
Web server numbers without state - a number that has not published a state yet is reported as unknown instead of 0, so the web UI matches what Home Assistant already shows (#20973).
web_server internal entities - the REST endpoints match the page and the API: an internal entity is no longer reachable by a guessed URL unless include_internal: true is set (#20883).

Thank you, contributors

This release includes 1357 pull requests from over 230 contributors. A huge thank you to everyone who made 2026.11.0 possible:

@bdraco - 697 PRs including the self-contained AP mode web interface served as a captive portal, OTA key rotation and a UDP fallback for lossy links, crash reports on five more LibreTiny chips, a boot log buffer replayed over the API, moving strings and lookup tables across hundreds of components into flash, numeric scheduler ids, new shared bus, codegen and Apply entity helpers rolled out across the component tree, and a large expansion of codegen, unit and integration test coverage
@swoboda1337 - 88 PRs including the clang-tidy 23 sweep, ESP-IDF 6 preparation, native Windows build support, and a broad fill-in of component test coverage
@clydebarrow - 52 PRs including the new runtime_image streaming JPEG decoder, the LVGL 9.6 migration with the color picker and menu widgets, the new packet_interface component and XXTEA/HDLC layers, and merging simple actions into inline control flow
@jesserockz - 21 PRs including the component DOMAIN constants rollout, new mipi_spi and epaper_spi panel models, and the move to gh actions-lock for workflow pinning
@FredM67 - 21 PRs including the deferring-action validators and their adoption across modbus_client, mqtt, haier and nextion, and the emontx reboot lock and firmware-version read
@remcom - 17 PRs including the new tmc2209 stepper driver, the fusb302b USB PD sink, the DFRobot SEN0609/SEN0610 radar and i2s_audio full duplex
@Bascht74 - 14 PRs including the new modbus_monitor component, KeeLoq suffix bits and the Jarolift TDEF group frame, and the TcpClientLink idle timeout
@luar123 - 12 PRs including zigbee sleepy-end-device support on ESP32, the zigbee report action, and GPIO hold during (deep) sleep
@albert-canfield - 12 PRs including power-loss handling and weekday conversion fixes across pcf8563, pcf85063 and bm8563, dry-only thermostat support and better compile-error line numbers for lambdas
@kahrendt - 12 PRs including the new sendspin source role that streams a microphone to the server, the AudioCapture microphone buffer rework and the original-ESP32 i2s playback fixes
@rwrozelle - 10 PRs including the new friedrich climate IR component, the power_management domain with esp32_power_management, UDP IPv6 unicast and multicast, and the Thread-sized UDP OTA
@tomaszduda23 - 10 PRs including CDC-UART on nRF52, the zephyr_coredump flash store and LVGL build fixes on nRF52
@wolph - 10 PRs including the new Hi-Link LD6004 radar across every platform and the shared LD600X base used by ld6002b
@exciton - 10 PRs including SSD1681 differential partial refresh and other epaper_spi performance work, and the new cw2017 battery fuel gauge
@bharvey88 - 9 PRs including the sen6x CO2, temperature compensation, PM number concentration, actions and status sensors, and user-defined API action variables with defaults
@techdregs - 9 PRs including the new rx8111 real-time clock with alarms, wake-up timer and event timestamps, and tmp102 hardware configuration and alert entities
@fallenmi - 9 PRs including correctness fixes across the HLK radar family (ld2410, ld2410s, ld2420, ld2450, ld2460), tfluna and dfrobot_sen0395
@huangkongsheng - 8 PRs including a config-validator sweep across cron ranges, cv.entity_id, cv.dimensions, cv.percentage_int and UTF-8 SSID length
@MindFreeze - 7 PRs including the new vnc client component with Hextile encoding, password authentication and touchscreen input forwarding
@kbx81 - 7 PRs including esp-idf-sbom manifest emission with esphome.project.sbom supplier info, and interface-change notifications for network listeners
@latonita - 6 PRs including the new bh1745 colour sensor, lis2dw12 accelerometer, husb238 USB PD controller and the three-part as734x spectral sensor
@Rapsssito - 5 PRs including MQTT session persistence and expanded TLS options, the new bq25186 charger and RTC memory for globals
@j9brown - 5 PRs including the new i2s_clockless_led_strip DMA driver and the ESPColorView / addressable-light refactor
@mrtoy-me - 5 PRs including the tas58xx fault, activate and mixer-mode options and support for multiple audio DACs on one speaker
@oarcher - 4 PRs including the new modem PPPoS cellular networking component with signal sensors and the WiFi-to-ethernet WISP bridge
@ab-tools - 4 PRs including the new usb_audio UAC host support and USB host FIFO sizing on ESP32-S2/S3
@gledian - 4 PRs building the new ecocomfort2 component for Fantini Cosmi VMC units over BLE
@n-IA-hane - 4 PRs including a configurable TTS playback start timeout and the micro_wake_word inference core selection
@nliaudat - 4 PRs including the new mics_5524 gas sensor, WiFi ap_mode: ALWAYS_ON and esp32_camera digital zoom
@epicRE - 4 PRs including the new delta_wallbox AC wallbox component with current-set support
@dcb - 4 PRs including ld2450 polygon-zone flash writes, lost-radar-link detection and multicast-bit MAC reporting
@fornellas - 3 PRs including on-device ld2450 polygon zones with per-target position text sensor and extra cse7761 sensors
@RaHehl - 3 PRs including esp32_camera single-image capture_delay and triggers, and the hoermann_hcp actuator-error binary sensor
@puddly - 3 PRs including the new ezsp_proxy_tap SiLabs EZSP auto-ACK bridge and usb_uart modem pin control with hardware flow control
@porelli - 3 PRs including switch initial_state with flash or RTC storage, per-entity preference storage selection and LibreTiny RTC preferences on BK7231/BK7238
@KoenBreeman - 2 PRs: the new Seeed Studio Grove multi-channel relay and M5Stack 4-relay switches
@NovakIrs - 2 PRs building the new HLK-LD2410S presence radar
@ilikecake - 2 PRs: the new ht16k33_char character display and the pca9554 device-option expansion
@egormanga - 2 PRs: the new homeassistant light platform and WiFi Easy Connect (DPP) provisioning
@zigboi - 2 PRs: Mitsubishi multi-vane control and fahrenheit_compatibility mode
@felipecrs - 2 PRs: WiFi access-point WISP mode and cover-toggle support in the native API
@tuct - 2 PRs: the new filter_lifetime component and pmsx003 Luftmy LD15 support
@CircuitSetup - 2 PRs: configurable atm90e32 thresholds and gain-calibration write verification
@mvoss96 - 2 PRs: addressable LED strip power estimation / current limiting and cse7766 low-load power behaviour
@bughaver - 2 PRs: heatpumpir Eco and Boost presets and the ZMP IR receiver
@PolarGoose - 2 PRs: dlms_meter Landis+Gyr E450 HDLC Cyprus support and a parser refresh
@Ardumine - 2 PRs: the new zephyr_mcumgr SMP UDP OTA transport for nRF52 and Zephyr/nRF52 UDP IPv6
@Zebble - 2 PRs: the new lis3dh accelerometer and tca8418 keypad components
@david-collett - 2 PRs: esp32_ble_server secure connection support
@lboue - 2 PRs: the new M5Unit-BLDC and ICM-20689 components
@aalaei - 2 PRs: nRF52 hardware SPI support and the new veml6040 RGBW colour sensor
@eoleedi - 2 PRs: hitachi_ac344 quiet, vertical swing and mildew-proof modes
@juriyivanov - 2 PRs: gree IR receiver support and YX1FF/YAC frame fixes
@DennisGaida - 2 PRs: bmi270 BMM150 magnetometer aux support and the new lp5562 LED driver output
@ikruglov - 2 PRs: bl0939 internal temperature sensor and pcf8574 output preservation across MCU reboots
@Gunni - 2 PRs: clearer yaml_util package errors and cached esp32_hosted firmware downloads
@candrews - 2 PRs: new epaper_spi panels (XSRUPB-7.5in-bwr and Good Display GDEY029Z95)
@bboe - 2 PRs: media_player constant bitrate and shared CONF_BITRATE
@guillempages - 2 PRs: image RGB111 format and a Pillow deprecation fix
@piitaya - 2 PRs: cover stop-tilt in the core and MQTT
@Mat931 - 2 PRs: the systa_bus text_sensor and an esp32_camera compile warning
@mbrudka - 2 PRs: micro_wake_word internal RAM placement and configurable capture buffer duration
@jeroen85 - 2 PRs: four-decimal fast value formatting and a bigger web_server_idf task stack
@sebo-b - 2 PRs: web_server internal-entity URL handling and the new ln882x_spi_led_strip
@gongloo - 2 PRs: mipi_rgb direct-to-PSRAM rotated blitting and HA state-subscription vector reservation
@labodj - 2 PRs: vbus P1 telegram checksum handling and shared CONF_VALUE_TYPE
@andytrofimov - 2 PRs: audio HTTP partial-read release and reduced speaker announcement buffering
@Kubuxu - 2 PRs: ledc hardware duty dithering and a PWM duty-scaling fix
@javitonino - 2 PRs: voice_assistant microphone stop handling at STT_END and before speech
@randybb - 2 PRs: OTA and voice_assistant builds with IPv4 disabled
@GiorgioAresu - 2 PRs: the new mipi_rgb GC9503V and ZX3D95CE01S-TR-4848 panel support
@adamsthws - 2 PRs: an api responding-action array-arg compile fix and cse7766 verbose power-factor logging
@crnjan - 2 PRs: mitsubishi_cn105 horizontal vane direction control
@chunckus-aurelius - 2 PRs: shared tap and double-tap support via the new motion component
@iskyguy - 2 PRs: the sht4x serial-number text sensor with a longer response wait

Also thank you to @Petapton, @Procsiab, @mick96, @kokx, @jorofi, @CzBiX, @JosVanEijndhoven, @peter-valkov, @jzucker2, @GilDev, @DAVe3283, @tchilov, @ificator, @patagonaa, @marshn, @iyesin, @endemics, @AchilleGR, @amateescu, @JiriPrchal, @philpem, @B48D81EFCC, @will-tm, @tjhorner, @mrene, @wiiaam, @minorOffense, @GioMez, @t2bottom, @fonix232, @AnilDaoud, @pl4nkton, @joshuaboniface, @nullable-eth, @JohnMcLear, @ankur-paan, @FrederikBolding, @paveldn, @rwalker777, @cociweb, @dmik, @e28eta, @RobertH1993, @emilioaray-dev, @functionpointer, @naKruul, @mikesmitty, @Bofr5555, @mkhrulov, @arpena, @SebiGo, @MatiasFernandez, @RuedigerMueller, @slimcdk, @Siddharthsinghkumar, @martinsah, @rggammon, @limpkin, @happydasch, @bootc, @sourabhjaiswal, @lerhum, @longerCZE, @opcod3, @AndreKR, @max246, @profplump, @Fexiven, @jrvd007, @pputerla, @fredkotze, @Aptimex, @ptr727, @patrickod, @damib, @polyfloyd, @bogdanr, @bkbartk, @ryansch, @c0nsumer, @MayorBug, @andreuSignes, @mfishma, @mkucharek, @backcountrymountains, @linkedupbits, @ljungqvist, @matt123p, @danepowell, @jesusvallejo, @adminy, @jlmeredith, @PeterLinuxOSS, @grischard, @ademuri, @Chorty, @pleasantone, @willumpie82, @jcianci12, @Marvinthebored, @zerafachris, @cosmicDustOfLightLength, @ipopov, @rupayon123, @dbuezas, @toups, @CReimer, @Firat17aze, @fauxpark, @omersiar, @TheZoc, @k7hpn, @jaaviercr, @ajfriesen, @steamEngineer, @KD5RYN, @jhenkens, @TheLexus, @DavidWAbrahams, @p1ngb4ck, @tzabbi, @HugoPeters1024, @r3wretrhy, @nagisa, @dhoeben, @daeho-ro, @miloit, @elpollodiablo, @Cat-Ion, @tommat01, @thomasfw, @bbbert, @Komzpa, @ishai-levy, @magnusoverli, @samsonovss, @bhuveshm29, @christophmertins, @cpruijsen, @glmnet, @manuelm, @FuNK3Y, @Korkuttum, @JoHoenk, @Duckle29, @kboone, @AdamVig, @chbgdn, @heythisisnate, @Doridian, @lobo67, @b84330808, @rusitschka, @arthurkomatsu, @gcormier, @guiguid, @abmantis, @koszoaron, @syssi, @kVinsom, @francescopace, @zeroflow for their contributions, and to everyone who reported issues, tested pre-releases, and helped in the community.

Breaking changes

Component changes

MagiQuest: The decoder now reads the full 56-bit frame and checks its checksum, so x.wand_id and x.magnitude in on_magiquest lambdas change. Old binary sensor matches still work; run the dumper again for lambda values. #10622
NEC remote: command_repeats now sends real NEC repeat frames and is clamped to 1 to 10. Received x.command_repeats is always 1; detect a held button from the frame cadence. #17663
Panasonic remote: Frames of 56 bits or more now decode as nbits: 56 with the new address_2 byte. Update configs captured from 56-bit remotes with a fresh dump. #20260
CAN bus: A constant canbus.send payload longer than 8 bytes now fails validation instead of being silently truncated. Fix also stops sending the wrong length for lambda payloads of 256 bytes or more. #20309
Ethernet: Removed the deprecated clk_mode option. Use the clk: block with mode: and pin:. #20384
DLMS meter: Removed the deprecated provider option. Most configs can drop the key; provider: netznoe users add the two custom_patterns it used to inject. #20385
DLMS meter: Removed the deprecated predefined sensor and text_sensor keys such as voltage_l1 and timestamp. Each value is now its own entity with obis_code. #20386
LVGL: Removed the deprecated number update_on_release option. Use trigger: on_release. #20387
Nextion: Removed the deprecated dump_device_info option. Device info is always logged; delete the key. #20388
QSPI AMOLED: Removed the legacy renamed component stub. Use platform: qspi_dbi. #20396
emonTx: on_json and on_data reject deferring actions (delay, wait_until, script.wait) at validation. Copy the values you need into globals first, then defer from a separate script. data and raw_json are now StringRef instead of std::string. #20516
MQTT: on_json_message rejects deferring actions at validation. Copy the values you need into globals first, then defer from a separate script. #20538
Haier: on_status_message rejects deferring actions at validation. Copy the values you need into globals first, then defer from a separate script. #20539
Web server: REST endpoints no longer match internal entities by URL unless include_internal: true is set. This matches the native API and MQTT behaviour. #20883
Web server: A number entity that has not published a state yet is now reported as unknown instead of 0. In the REST and event-stream JSON it is sent as "state":"NA","value":"NaN". #20973
E-paper SPI: Refactored color_bwr handling; WeAct 3C, Waveshare B, Waveshare BWR and Inkplate 2 panels now map colors to the nearest of black, white or red in RGB space. Waveshare 7.5” V2 BWR and WeAct 3C panels now report DISPLAY_TYPE_COLOR instead of BINARY, so the test card and get_display_type() lambdas change. #19654
HTTP request: http_request.get, post and send actions are now asynchronous and run from the component loop. Scripts containing these actions keep running until the response arrives; set mode: queued or mode: parallel where repeated runs must not be skipped. New max_concurrent_requests option (1 to 4) allows more than one request in flight. #21486
API sub-devices: relation: is now required on every entry under esphome: devices:. Add relation: via to keep today’s behaviour for a physical device reached through this node, or relation: child for a logical part of this node. #21232

Platform changes

Network: Added network: enable_ipv4 (default true). An openthread config on esp32 without anything else requiring IPv4 now defaults IPv4 off; add network: enable_ipv4: true to opt back in. enable_ipv6 now resolves automatically when a component requires it, so openthread no longer needs enable_ipv6: true. #14526
OpenThread: Added Border Router support on ESP32. Requires ESP-IDF 5.5.5 or newer, for plain Thread devices as well as border routers. Remove a pinned esp32.framework.version or raise it to 5.5.5. #18104
esp32_hosted: Moved to esp_hosted 3.0.10. Requires ESP-IDF 5.5 or newer. A 1-bit SDIO setup must now set d1_pin (the pin wired to DAT1). active_high: false is no longer accepted; active_high: true works with a deprecation warning. #21394
ESP32: Minimum ESP-IDF version is now 5.1. A build pinned to 5.0.x fails validation. #21398
LibreTiny: Bumped to 1.14.0 with BK7231N and BK7231T built on Beken BDK 3.0.78. Fixes STA+AP captive portal credential saving, OTA watchdog resets and Wi-Fi-less reboot loops. LN-CB3S V1.0 configs that use the D12 alias now drive PA10 instead of PA11; the old pin is D13 or PA11. ADC readings on BK7231N and BK7231T are now correct (they previously read about half the true voltage). #21531
ESP32 RMT: ESPHome now checks at validation that esp32_rmt_led_strip, remote_transmitter and remote_receiver fit the chip’s RMT channels together. Configs with too many components, with more than one use_dma in a direction, or with an invalid rmt_symbols value now fail validation instead of failing at boot. #22172

Undocumented API changes

Many components reorganized internal C++ APIs this release. These changes are not covered by the formal breaking change policy, but lambda users and external component maintainers may need to adjust. Grouped by theme:

Entity names and strings moved to flash

EntityBase names: EntityBase::name_ is now a ProgmemStringRef on ESP8266. get_name() is deprecated and returns a const StringRef & with a RAM copy made on first use (removal in 2027.5.0). Use get_log_name() for log lines and get_name_to(buffer) or name_equals(other) where you need the value.
```
// Before
ESP_LOGD(TAG, "'%s' updated", this->name_.c_str());

// After
ESP_LOGD(TAG, "'%s' updated", LOG_STR_ARG(this->get_log_name()));
```
#20423 #20615
API action strings: The (progmem) proto option now also applies to string fields. HomeassistantActionRequest.service and HomeassistantServiceMap.key/value carry ProgmemStringRef values. Code that fills a HomeassistantActionRequest assigns ProgmemStringRef, for example resp.service = ProgmemStringRef(StringRef(name));. #20425

Component names and payloads kept in fixed buffers or StringRef

BedJet: BedJetHub::get_name() now returns const char * from a fixed 24-byte buffer instead of std::string. Pass it directly to %s log arguments. #21204
NFC binary sensor: set_ndef_match_string() / set_tag_name() now take const char *. match_string_ is stored as a StringRef. #21208
key_collector: The five key lists (start_keys, end_keys, back_keys, clear_keys, allowed_keys) are stored as StringRef views of the YAML literals; the setters take const char *. #21210
graph: GraphTrace::get_name() now returns StringRef instead of std::string. Lambdas comparing with ==, calling .c_str(), or assigning to std::string keep working. #21211

Flash tables for internal lookup strings

Haier: The hOn alarm message table (HON_ALARM_MESSAGES, HON_ALARM_COUNT) is removed from hon_packet.h and kept as a PROGMEM_STRING_TABLE. On ESP8266, the message passed to on_alarm_start / on_alarm_end is a static buffer overwritten by the next alarm change; use code instead if an automation waits. #20641
Nextion: get_queue_type_string() is no longer virtual and returns const LogString * instead of const char *. Wrap with LOG_STR_ARG() to pass it to %s log arguments. #20658
NFC URI prefixes: PAYLOAD_IDENTIFIERS and PAYLOAD_IDENTIFIERS_COUNT are removed from ndef_record_uri.h. The table is now a PROGMEM_STRING_TABLE in ndef_record_uri.cpp. #20709

Hub forwarding entities (Apply pattern)

Many hub components replaced their per-entity C++ classes with codegen-only Apply* entities. The hub gains a public method that takes the state, index or value. External code that inherited from the removed classes should switch to ApplyButton / ApplyNumber / ApplySelect / ApplySwitch / ApplyFloatOutput / ApplyBinaryOutput. The generated entity’s auto-generated id changes; entity names and object ids do not.

Hub buttons: ld2410, ld2412, ld2420, ld2450, seeed_mr24hpc1, seeed_mr60fda2, haier, hoermann_hcp, dfrobot_sen0609, bq25186, espectre, tfluna. #20964
Hub numbers: ld2410, ld2412, ld2450, seeed_mr24hpc1, dfrobot_sen0609. set_gate_threshold on ld2410 now takes the number entity itself. #20965
Hub selects: ld2410, ld2412, ld2420, ld2450, seeed_mr24hpc1, seeed_mr60fda2, haier, es8388, espectre. #20966
Hub switches: ld2410, ld2412, ld2450, seeed_mr24hpc1, at581x. #20967
Hub channel outputs: tlc59208f, dac7678, gp8403, my9231, sm2135, sm2235, sm2335, bp1658cj, lp5562, mcp4728, pca9685, sm16716, tlc5947, tlc5971, tm1638, bh1745, emc2101, waveshare_io_ch32v003. The hubs gain write_channel(channel, state) instead of per-channel classes. #21257
pipsolar: PipsolarSwitch class removed; switches use Apply entities. Pipsolar::queue_command now takes const char * (a std::string overload remains for lambdas). #21659
sendspin: SendspinEnabledSwitch class removed. #21673
bq25186: BQ25186PgGpoSwitch class removed; the generated code uses publish="on_success". #21675
pcm5122: PCM5122PowerSwitch class removed; the generated body calls set_standby(state) or set_powerdown(state) directly. #21677
mitsubishi_cn105: MitsubishiCN105VerticalVaneDirectionSelect replaced with select::ApplySelect. Both vane direction selects now live in one select: entry per hub. WideVaneMode enumerators renamed from FAR_LEFT to POSITION_1 etc. #21863

Copy / follow entity platforms

copy, switch, number, text: copy::CopySensor, copy::CopyTextSensor, switch_::SwitchBinarySensor, number::NumberSensor and text::TextTextSensor are removed. The entities are now plain sensor::Sensor, binary_sensor::BinarySensor and text_sensor::TextSensor that follow a source through a callback registered before setup(). setup_priority is no longer accepted on these entities. #21610 #21612

Remote transmitter actions

Per-protocol action classes removed: NECAction, SonyAction, PanasonicAction, KeeloqAction, MagiQuestAction, HaierAction, MideaAction, MirageAction, AEHAAction, ABBWelcomeAction, ProntoAction, RC6Action and 20+ others. Codegen now produces stateless functions through register_protocol_action. External protocols still work through the unchanged Python register_action. #20549 #20564 #20568
Byte payload actions: uart.write, udp.write, sx127x, sx126x and cc1101 send-packet actions use ApplyBytes instead of per-component TEMPLATABLE_BYTES action classes. SendPacketAction, UDPWriteAction and UARTWriteAction are removed. #21263
UART switch and button payloads: Payload setters now take a pointer and a length. The vector and initializer list overloads used by codegen are removed. #20082

Triggers built from callbacks

display on_page_change: DisplayOnPageChangeTrigger is removed and Display::add_on_page_change_trigger no longer exists. The storage is compiled out when no on_page_change is configured. The generated trigger_id key is gone. #20456
graphical_display_menu on_redraw: GraphicalDisplayMenuOnRedrawTrigger removed. add_on_redraw_callback() now passes const GraphicalDisplayMenu *. #20452
Callback automations with inline actions: When every action in a callback automation is inline, no Automation or action object is generated. ScriptExecuteAction and Script::execute_tuple are removed; use script.execute through the apply path. #21979

Numeric scheduler ids and heap-free command queues

dallas_temp / one_wire: OneWireDevice::get_address_name() is removed. Format the address with format_hex_prefixed_to(buf, this->address_) for log lines; LOG_ONE_WIRE_DEVICE still works.

// Before
this->set_timeout(this->get_address_name().c_str(), 750, [this] { ... });

// After
static constexpr uint32_t CONVERSION_TIMEOUT_ID = 0;
this->set_timeout(CONVERSION_TIMEOUT_ID, 750, [this] { ... });

#20361

dfrobot_sen0395: The Command class hierarchy and enqueue(std::unique_ptr<Command>) are gone; commands are now 2-byte values in a StaticRingBuffer. The documented dfrobot_sen0395.reset and dfrobot_sen0395.settings actions and the switches are unchanged. #20906

Other API changes

Light HSV on addressable strips: ESPColorSettable::set_hsv() now also clears the white channel. A lambda that relied on a previous white value being kept must set it explicitly after set_hsv(). #20265
AddressableLight refactor: ESPColorView and related types were refactored. ESPColorSettable::set(ESPHSVColor) and ESPColorRange::set(ESPHSVColor) are deprecated; use set_hsv(). External AddressableLight subclasses need small changes - see the developer blog post. #21577
I2C little-endian helpers: 36 sensor components now use the shared read_byte_16_le, write_byte_16_le, read_bytes_16_le, encode_value_le<> helpers. External components can follow suit; see the helper PR #20938. #20939
heatpumpir: set_protocol() is gone. The climate is constructed with a ProtocolTag<P> so only the configured protocol’s class is linked. #20707
atm90e32: The public using_saved_calibrations_ field, the OffsetRestoreState type, resolve_offset_restore_state and prepare_offset_rollback helpers are removed. Gain, offset and power offset calibration share one save/rollback path. #18731
ld6002b / ld600x: LD6002BComponent is now a thin subclass of ld600x::LD600XComponent. The twelve per-axis area sensor setters collapse into set_area_sensor(kind, area, axis, sensor). #19837
pulse_counter: The software interrupt is now attached to the counted edges only when internal_filter: 0us. Edge mode setters log an error and ignore a change made after setup(). #21271
micro_wake_word: Internal RAM placement is now opt-in through prefer_internal_ram: true; disabled models release their arena and weight copy. #20529
speaker: AudioPipeline::start_url() and start_file() take an optional announcement boolean. Existing one-argument calls remain valid. Announcements start once the raw buffer has not changed for 1.5 s, in addition to the normal startup threshold. #21091

Breaking changes for developers

Entity names in flash on ESP8266: EntityBase::name_ is now a ProgmemStringRef. Its c_str() is deprecated and get_name() is deprecated; use get_log_name() with LOG_STR_ARG() for log calls and get_name_to(buffer) or name_equals() where you need the value. Removal in 2027.5.0. #20423 #20615
API action strings: (progmem) proto option now applies to string fields. HomeassistantActionRequest.service and HomeassistantServiceMap.key/value take a ProgmemStringRef. The 384 byte user-action text limit is gone. #20425
ESPColorView refactor: AddressableLight and related types were refactored. ESPColorSettable::set(ESPHSVColor) and ESPColorRange::set(ESPHSVColor) are deprecated; use set_hsv(). External AddressableLight subclasses need small changes - see the developer blog post. #21577
AddressableLight HSV: ESPColorSettable::set_hsv() now clears the white channel. #20265
Display color order: draw_pixels_at() and ColorUtil no longer take a color order argument; RGB 888 pixel blocks are always b, g, r in memory. #20884
InternalGPIOPin: Now binds to the platform pin class instead of a virtual base. #20455
RingBuffer alias: Removed the deprecated esphome::RingBuffer alias. #20390
alloc_helpers.h: helpers.h no longer re-exports alloc_helpers.h; include it directly. #20389
Numeric scheduler ids: Many components moved from string scheduler ids to numeric ids. External components using set_timeout()/set_interval() with strings should migrate to constexpr uint32_t ids. #20361
Component DOMAIN constants: Every component now has a DOMAIN constant used instead of name literals in code generation.
LVGL 9.6.0: Internal LVGL bump may affect external components calling LVGL APIs directly. #20257
Light effect list: Light effect list is kept in a flash ConstVector. #20204
Climate/Fan traits: custom_fan_modes, custom_presets and preset_modes are kept in ConstVector; deprecated traits setters removed. #20213 #20214
Event types: Kept in a shared flash table. #20217
BedJet/Xiaomi: BedJetHub::get_name() returns const char * instead of std::string. #21204 Xiaomi sensors share a new XiaomiDevice base. #21483
Remote transmitter actions: Per-protocol ...Action C++ classes (NECAction, PanasonicAction, HaierAction, MideaAction and many more) removed; codegen now produces stateless functions through register_protocol_action. #20549 #20564 #20568
Remote dumpers: Stateless dumpers kept in flash. #21563
Callback automations: build_callback_automation / build_trigger_callback now run directly without Automation or action objects when every action is inline. ScriptExecuteAction and Script::execute_tuple are removed; use script.execute through the apply path. #21979
ApplyEntity helpers: Many hub buttons, numbers, selects, switches and outputs moved to codegen-only Apply* entities. Per-component entity classes such as PipsolarSwitch, PCM5122PowerSwitch, TLC59208FChannel, BQ25186PgGpoSwitch are removed; the hubs gain public methods that take the state or channel. #20964 #20965 #20966 #20967 #21257
Copy entity platforms: copy::CopySensor, copy::CopyTextSensor, switch_::SwitchBinarySensor, number::NumberSensor and text::TextTextSensor are removed; entities are now plain base-class entities with a follow callback. #21610 #21612
Weikai: Base classes marked final. #17292

For detailed migration guides and API documentation, see the ESPHome Developers Documentation.

Full list of changes

For the complete list of every merged pull request in this release, see the full 2026.11.0 changelog.