ESP Modules

ESP32-S2

Figures here are compiled from Espressif's official datasheets, with the source linked on each page. Mistakes are possible, so if something looks off, please report it.

Specifications

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CPUXtensa LX7, 1-core @ 240 MHz
SRAM / ROM320 / 128 KB
Wi-FiWi-Fi 4
Bluetoothnone
802.15.4No
Deep sleep— µA

Modules based on ESP32-S2

Software & firmware

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Notable open-source software & firmware known to run on this chip. Support evolves, so check each project for its current board support.

Smart home & IoT

  • Tasmota★ 24k

    Mature open firmware for smart switches, plugs and sensors, with web UI, MQTT and rules.

  • ESPHome★ 11k

    Describe your device in YAML and get firmware that integrates straight into Home Assistant, no C required.

SDKs & languages

  • MicroPython★ 22k

    Run Python 3 directly on the chip with an interactive REPL, great for rapid prototyping.

  • ESP-IDF★ 18k

    Espressif's official IoT development framework (FreeRTOS-based, C/C++); the reference SDK for every modern ESP32-family chip.

  • Arduino-ESP32★ 17k

    The official Arduino core for ESP32 chips; the easiest on-ramp, built on top of ESP-IDF.

  • esp-hal (esp-rs)★ 2.0k

    Bare-metal Rust hardware-abstraction layer for Espressif chips, and the heart of the esp-rs ecosystem.

LED, display & UI

  • WLED★ 18k

    Fast, feature-rich control for addressable LED strips over Wi-Fi, with app, web UI and effects.

Security research

  • ESP32 Marauder★ 11k

    Wi-Fi/Bluetooth analysis and pen-testing suite for ESP32, for authorised testing and education.