# ESP32-H2 DevKitM-1-N4S

> Official Espressif development board for the ESP32-H2 — a RISC-V MCU purpose-built for 802.15.4 wireless protocols: BLE 5.3, Zigbee 3.0, Thread 1.3, and Matter. No WiFi. 4MB flash, USB-C with CH343P.

## Quick Facts

- **Brand:** Espressif
- **Board Type:** dev-board
- **Price:** ~$10
- **CPU:** RISC-V single-core @ 96MHz (ESP32-H2)
- **CPU Architecture:** RISC-V 32-bit
- **CPU Cores:** 1
- **RAM:** 320KB SRAM
- **Flash:** 4MB
- **USB:** USB-C 2.0 (JTAG/serial via CH343P)
- **Power:** 5V
- **Operating Voltage:** 3.3V
- **Antenna:** Built-in PCB antenna

## Connectivity

- **Bluetooth:** BLE 5.3
- **Zigbee:** Zigbee 3.0
- **Thread:** Thread 1.3
- **Matter:** Matter 1.0

## Compatible Firmware

esp-idf, arduino, zephyr, matter

## Use Cases

- iot
- smart-home
- matter-smart-home
- zigbee-gateway
- thread-mesh

## Components

- **ESP32-H2** (mcu): ESP32-H2 SoC with RISC-V 32-bit core at 96MHz, BLE 5.3, Zigbee 3.0, Thread 1.3, and Matter 1.0 — no WiFi radio — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32-h2_datasheet_en.pdf&ref=openhardware.directory&product=esp32-h2-devkitm-1&source=md-export)

## Protocols

- **I2C**: SDA: GPIO12, SCL: GPIO22
- **SPI**: MOSI: GPIO5, MISO: GPIO0, SCK: GPIO4, CS: GPIO1
- **UART**: TX: GPIO24, RX: GPIO23
- **PWM**

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO0 | SPI MISO | SPI | adc, digital-input, digital-output, pwm |
| GPIO1 | SPI CS | SPI | adc, digital-input, digital-output, pwm |
| GPIO2 | GPIO2 | GPIO | adc, digital-input, digital-output, pwm |
| GPIO3 | GPIO3 | GPIO | adc, digital-input, digital-output, pwm |
| GPIO4 | SPI SCK | SPI | adc, digital-input, digital-output, pwm |
| GPIO5 | SPI MOSI | SPI | adc, digital-input, digital-output, pwm |
| GPIO6 | GPIO6 | GPIO | digital-input, digital-output, pwm |
| GPIO7 | GPIO7 | GPIO | digital-input, digital-output, pwm |
| GPIO8 | GPIO8 | GPIO | digital-input, digital-output, pwm |
| GPIO9 | GPIO9 | GPIO | digital-input, digital-output, pwm |
| GPIO10 | GPIO10 | GPIO | digital-input, digital-output, pwm |
| GPIO11 | GPIO11 | GPIO | digital-input, digital-output, pwm |
| GPIO12 | I2C SDA | I2C | digital-input, digital-output, pwm |
| GPIO13 | GPIO13 | GPIO | digital-input, digital-output, pwm |
| GPIO14 | GPIO14 | GPIO | digital-input, digital-output, pwm |
| GPIO15 | GPIO15 | GPIO | digital-input, digital-output, pwm |
| GPIO16 | GPIO16 | GPIO | digital-input, digital-output, pwm |
| GPIO17 | GPIO17 | GPIO | digital-input, digital-output, pwm |
| GPIO22 | I2C SCL | I2C | digital-input, digital-output, pwm |
| GPIO23 | UART RX | UART | digital-input, digital-output, pwm |
| GPIO24 | UART TX | UART | digital-input, digital-output, pwm |
| GPIO25 | GPIO25 | GPIO | digital-input, digital-output, pwm |
| GPIO26 | GPIO26 | GPIO | digital-input, digital-output, pwm |
| GPIO27 | GPIO27 | GPIO | digital-input, digital-output, pwm |

## Description

The ESP32-H2 DevKitM-1-N4S is Espressif's official development board for the ESP32-H2 SoC — a purpose-built 802.15.4 + Bluetooth chip. Unlike other ESP32 variants, the H2 deliberately omits WiFi to focus on low-power mesh networking via Zigbee 3.0, Thread 1.3, BLE 5.3, and Matter 1.0.

## Key Features

- **BLE 5.3** — latest Bluetooth Low Energy spec with improved reliability and direction finding
- **802.15.4 dual-mode** — Zigbee 3.0 and Thread 1.3 share the same radio, switchable at runtime
- **Matter native** — ideal end-device or coordinator in a Matter ecosystem
- **No WiFi** — leaner power envelope, designed to live at the edge of a mesh network
- **USB-C with CH343P** — reliable JTAG/serial bridge for flashing and debugging
- **96MHz RISC-V** — efficient open-ISA core with hardware security features

## Pinout

~24 GPIO pins broken out. GPIO0–GPIO5 are ADC-capable. All GPIO support PWM via the LEDC controller. UART is on GPIO23/GPIO24, I2C on GPIO12/GPIO22.

## Use Cases

Ideal for Zigbee end-devices, Thread sleepy end nodes, Matter accessories (lights, sensors, locks), and any battery-powered smart home device that joins an existing WiFi-based border router network.

## Where to Buy

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

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5715&ref=openhardware.directory&product=esp32-h2-devkitm-1&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fespressif%2Fesp-dev-kits&ref=openhardware.directory&product=esp32-h2-devkitm-1&source=md-export)

## Tags

`esp32-h2`, `risc-v`, `zigbee`, `thread`, `matter`, `ble`, `802154`, `espressif`, `devkit`

## Images

![ESP32-H2 DevKitM-1-N4S](https://nbg1.your-objectstorage.com/openhardware-directory/entities/esp32-h2-devkitm-1/5b64d98fb3ab.jpg)

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