Tasmota Documentation - Tasmota | WarmIndex

Tasmota is open-source firmware for ESP8266/ESP32 IoT devices that enables local control, automation, and integration without relying on cloud services, perfect for smart home enthusiasts and makers.

🚀 Overview

Tasmota is an alternative open-source firmware for thousands of ESP8266 and ESP32 based IoT devices, such as Sonoff and Tuya smart switches, sensors, and plugs. It provides easy configuration through a web interface and supports OTA updates for seamless maintenance.

The project solves the problem of proprietary cloud-dependent firmware that limits privacy, reliability, and customization in consumer smart home devices. With Tasmota, everything runs locally using MQTT, HTTP, KNX, or serial protocols, enabling integration with systems like Home Assistant or openHAB.

It's built for makers, hobbyists, developers, and smart home users who want full control and expandability. Originally created by Theo Arends (arendst), it's now actively maintained by a large community of 400+ contributors.

✨ Key Features

WebUI Configuration & OTA Updates: Simple browser-based setup and wireless firmware updates without disassembly (essential for user-friendly maintenance).
Automation with Rules, Timers, & Berry Scripts: Powerful logic engine for complex automations directly on-device, reducing need for external hubs.
Multi-Protocol Control: MQTT, HTTP API, Serial, KNX for flexible integration with any home automation platform.
Device Templates & Expandability: Supports 2000+ devices out-of-box; easy addition of sensors, relays, displays via I2C/SPI. Optional: Matter protocol support, ongoing Berry scripting enhancements.

🛠 Tech Stack

Firmware: C (63.3%), C++ (31.6%), Berry (4.0%)
Build System: PlatformIO
Platforms: ESP8266 (Arduino Core), ESP32
WebUI: Embedded HTML/CSS/JavaScript
Database: None (file-based config)
Auth: Basic HTTP or none
Hosting: Standalone on-device (OTA from ota.tasmota.com)

👥 Who Is This For?

This project is useful for:

Developers who want to hack/customize IoT hardware and prototype smart devices
Smart home teams looking for reliable, privacy-focused local automation
Indie makers building DIY sensors, switches, and controllers from cheap ESP modules

📸 Screenshots / Demo

Live demo: https://tasmota.github.io/install/
GitHub: https://github.com/arendst/Tasmota

🔥 Project Status

🟢 Actively building

Last updated: 2026-03-24

❓ FAQ

Is this project free?

Yes / Open Source (Free to download, flash, and use commercially under GPL-3.0; binaries available via OTA servers.)

Is the source code available?

Yes — https://github.com/arendst/Tasmota

Can I contribute?

Provide pull requests for features, fixes, or translations; test development builds; report bugs via Issues/Discussions; contribute device templates or docs; donate for hardware. Follow CONTRIBUTING.md and code of conduct.