# ESP32-H2-DevKitM-1-N4S

> Espressif development board for the ESP32-H2 with Bluetooth 5 LE, Zigbee 3.0, Thread, and Matter support, 4MB flash, USB-C, RGB LED, and full GPIO breakout — no Wi-Fi.

## Quick Facts

- **Brand:** Espressif
- **Board Type:** dev-board
- **Price:** ~$10
- **Product Readiness:** developer
- **CPU:** ESP32-H2
- **CPU Architecture:** RISC-V 32-bit
- **CPU Cores:** 1
- **RAM:** 320KB
- **Flash:** 4MB
- **Power:** 5V
- **Operating Voltage:** 3.3V
- **Antenna:** Built-in PCB antenna

## Connectivity

- **Bluetooth:** BLE 5.0
- **Zigbee:** 3.0
- **Thread:** 1.3
- **Matter:** 1.0

## Open Source

- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Certifications

RoHS

## Compatible Firmware

esp-idf, arduino, Zephyr

## Use Cases

- smart-home
- matter
- zigbee
- iot
- prototyping

## Components

- **ESP32-H2** (mcu): 32-bit RISC-V at 96 MHz, 320KB SRAM, BT5 LE, Zigbee, Thread, Matter, USB FS. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5715%2Fesp32-h2_datasheet_en.pdf&ref=openhardware.directory&product=esp32-h2-devkitm-1-n4s&source=md-export)
- **WS2812B RGB LED** (led): Addressable RGB LED on GPIO8. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fdatasheets%2FWS2812B.pdf&ref=openhardware.directory&product=esp32-h2-devkitm-1-n4s&source=md-export)

## Protocols

- **I2C**: SDA: GPIO22, SCL: GPIO23
- **SPI**: MOSI: GPIO5, MISO: GPIO4, SCK: GPIO6
- **UART**: TX: GPIO24, RX: GPIO25
- **I2S**: 
- **PWM**: 

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO0 | D0 | GPIO | digital, adc |
| GPIO1 | D1 | GPIO | digital, adc |
| GPIO2 | D2 | GPIO | digital, adc |
| GPIO3 | D3 | GPIO | digital, adc |
| GPIO4 | MISO | SPI | spi-miso, digital |
| GPIO5 | MOSI | SPI | spi-mosi, digital |
| GPIO6 | SCK | SPI | spi-sck, digital |
| GPIO7 | D7 | GPIO | digital |
| GPIO8 | RGB LED | GPIO | digital |
| GPIO9 | D9 | GPIO | digital |
| GPIO10 | D10 | GPIO | digital |
| GPIO11 | D11 | GPIO | digital |
| GPIO12 | D12 | GPIO | digital |
| GPIO13 | D13 | GPIO | digital |
| GPIO14 | D14 | GPIO | digital |
| GPIO22 | SDA | I2C | i2c-sda, digital |
| GPIO23 | SCL | I2C | i2c-scl, digital |
| GPIO24 | TX | UART | uart-tx, digital |
| GPIO25 | RX | UART | uart-rx, digital |

## Description

## Overview

The ESP32-H2-DevKitM-1-N4S is Espressif's official development board for the ESP32-H2, a RISC-V microcontroller purpose-built for IEEE 802.15.4 mesh networking and Bluetooth 5 LE. Unlike other ESP32 variants, the H2 deliberately omits Wi-Fi in favor of ultra-low power consumption and deep integration with Zigbee 3.0, Thread, and Matter protocols, making it ideal for smart home end devices and sensors.

The ESP32-H2 core runs at up to 96 MHz with 320 KB SRAM, 128 KB ROM, and 4 KB of low-power memory. Hardware acceleration covers AES-128/256, SHA, RSA, ECC, HMAC, and includes a hardware digital signature engine plus secure boot — giving it a strong security posture for production IoT deployments. The N4S variant includes 4 MB of SPI flash with security features enabled.

The devkit breaks out all available GPIO pins except those used by the flash bus. An addressable RGB LED on GPIO8 and a 3.3V power indicator, plus Boot and Reset buttons, and a current-measurement header (J5) are included. Two USB Type-C connectors serve programming/debug (USB-UART bridge, up to 3 Mbps) and native USB 2.0 Full Speed from the SoC. Power is supplied via USB-C with an onboard 5V-to-3.3V LDO.

## Where to Buy

- [Adafruit](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5715&ref=openhardware.directory&product=esp32-h2-devkitm-1-n4s&source=md-export) — 10

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5715&ref=openhardware.directory&product=esp32-h2-devkitm-1-n4s&source=md-export)
- [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5715%2Fesp32-h2_datasheet_en.pdf&ref=openhardware.directory&product=esp32-h2-devkitm-1-n4s&source=md-export)
- [learn guide](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.espressif.com%2Fprojects%2Fesp-dev-kits%2Fen%2Flatest%2Fesp32h2%2Fesp32-h2-devkitm-1%2Fuser_guide.html&ref=openhardware.directory&product=esp32-h2-devkitm-1-n4s&source=md-export)

## Tags

`esp32-h2`, `espressif`, `zigbee`, `thread`, `matter`, `ble`, `risc-v`, `devkit`

## Images

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