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Provide ESP8266 based itead Sonoff with Web, MQTT and OTA firmware using Arduino IDE or PlatformIO
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arendst Consolidate MqttPublishTeleState
Consolidate MqttPublishTeleState
Latest commit 8782053 Mar 20, 2019


Alternative firmware for ESP8266 based devices like iTead Sonoff with web UI, rules and timers, OTA updates, custome device templates and sensors support. Allows control over MQTT, HTTP, Serial and KNX for integrations with smart home systems. Written for Arduino IDE and PlatformIO.

GitHub version GitHub download License Chat

If you like Sonoff-Tasmota, give it a star, or fork it and contribute!

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See for release information.

In addition to the release webpage the binaries can also be OTA downloaded from


Dev Version Download Dev Build Status

See for release information and sonoff/_changelog.ino for detailed change information.

The development codebase is checked hourly for changes and if new commits have been merged and compile successfuly they will be posted at (this web address can be used for OTA too). It is important to note that these are based on the current development codebase and it is not recommended to flash it to devices used in production or which are hard to reach in the event that you need to manually flash the device if OTA failed. The last compiled commit number is also posted on the same page along with the current build status (if a firmware rebuild is in progress).



A Sonoff device is not a toy. It uses Mains AC so there is a danger of electrocution if not installed properly. If you don't know how to install it, please call an electrician. Remember: SAFETY FIRST. It is not worth to risk yourself, your family and your home if you don't know exactly what you are doing. Never try to flash a Sonoff device while it is connected to MAINS AC.

We don't take any responsibility nor liability for using this software nor for the installation or any tips, advice, videos, etc. given by any member of this site or any related site.


Please do not ask to add devices where you can't provide a basic working configuration (other than sonoff). Since there are thousands of them..

Quick Install

Download one of the released binaries from and flash it to your hardware as documented in the wiki.

Important User Compilation Information

If you want to compile Sonoff-Tasmota yourself keep in mind the following:

  • Only Flash Mode DOUT is supported. Do not use Flash Mode DIO / QIO / QOUT as it might seem to brick your device. See Wiki for background information.
  • Sonoff-Tasmota uses a 1M linker script WITHOUT spiffs 1M (no SPIFFS) for optimal code space. If you compile using ESP/Arduino library 2.3.0 then download the provided new linker script to your Arduino IDE or Platformio base folder. Later version of ESP/Arduino library already contain the correct linker script. See Wiki > Prerequisite.
  • To make compile time changes to Sonoff-Tasmota it can use the user_config_override.h file. It assures keeping your settings when you download and compile a new version. To use user_config.override.h you will have to make a copy of the provided user_config_override_sample.h file and add your setting overrides. To enable the override file you will need to use a compile define as documented in the user_config_override_sample.h file.

Version Information

  • Sonoff-Tasmota provides all (Sonoff) modules in one file and starts with module Sonoff Basic.
  • Once uploaded select module using the configuration webpage or the commands Modules and Module.
  • After reboot select config menu again or use commands GPIOs and GPIO to change GPIO with desired sensor.

Migration Information

See wiki migration path for instructions how to migrate to a major version. Pay attention to the following version breaks due to dynamic settings updates:

  1. Migrate to Sonoff-Tasmota 3.9.x
  2. Migrate to Sonoff-Tasmota 4.x
  3. Migrate to Sonoff-Tasmota 5.14
  4. Migrate to Sonoff-Tasmota 6.x

Support Information

See Wiki for more information.
See Community for forum.
Visit Discord Chat for discussions and troubleshooting.

The following devices are supported:


You can contribute to Sonoff-Tasmota by

  • providing Pull Requests (Features, Proof of Concepts, Language files or Fixes)
  • testing new released features and report issues
  • donating to acquire hardware for testing and implementing or out of gratitude
  • contributing missing documentation for features and devices on our Wiki



Libraries Used

Libraries used with Sonoff-Tasmota are:

People inspiring me

People helping to keep the show on the road:

  • David Lang providing initial issue resolution and code optimizations
  • Heiko Krupp for his IRSend, HTU21, SI70xx and Wemo/Hue emulation drivers
  • Wiktor Schmidt for Travis CI implementation
  • Thom Dietrich for PlatformIO optimizations
  • Marinus van den Broek for his EspEasy groundwork
  • Pete Ba for more user friendly energy monitor calibration
  • Lobradov providing compile optimization tips
  • Flexiti for his initial timer implementation
  • reloxx13 for his TasmoAdmin management tool
  • Joachim Banzhaf for his TSL2561 library and driver
  • Gijs Noorlander for his MHZ19, SenseAir and updated PubSubClient drivers
  • Emontnemery for his HomeAssistant Discovery concept and many code tuning tips
  • Aidan Mountford for his HSB support
  • Daniel Ztolnai for his Serial Bridge implementation
  • Gerhard Mutz for his SGP30, Sunrise/Sunset and display support drivers
  • Nuno Ferreira for his HC-SR04 driver
  • Adrian Scillato for his (security)fixes and implementing and maintaining KNX
  • Gennaro Tortone for implementing and maintaining Eastron drivers
  • Raymond Mouthaan for managing Wemos Wiki information
  • Norbert Richter for his tool
  • Andre Thomas for providing thehackbox OTA support and daily development builds
  • Joel Stein and digiblur for their Tuya research and driver
  • Frogmore42 and Jason2866 for providing many issue answers
  • Blakadder for editing the wiki and providing template management
  • Many more providing Tips, Wips, Pocs or PRs


This program is licensed under GPL-3.0

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