# ESP32-H2-MINI-1 Module

> Espressif ESP32-H2 MINI module with 4MB flash and PCB antenna, supporting Bluetooth 5 LE, Zigbee 3.0, Thread, and Matter — a compact bare module for custom PCB designs without Wi-Fi.

## Quick Facts

- **Brand:** Espressif
- **Board Type:** module
- **Price:** ~$2.25
- **Product Readiness:** developer
- **CPU:** ESP32-H2
- **CPU Architecture:** RISC-V 32-bit
- **CPU Cores:** 1
- **RAM:** 320KB
- **Flash:** 4MB
- **Power:** 3.3V supply rail
- **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

## Components

- **ESP32-H2** (mcu): 32-bit RISC-V at 96 MHz, 320KB SRAM, BT5 LE, Zigbee, Thread, Matter. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5716%2F5716-datasheet.pdf&ref=openhardware.directory&product=esp32-h2-mini-1&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 | D8 | 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-MINI-1 is a compact surface-mount engineering module from Espressif based on the ESP32-H2 SoC, designed for advanced users who need Bluetooth 5 LE, Zigbee 3.0, Thread, and Matter in a small footprint without Wi-Fi. The module integrates a PCB antenna and includes 4 MB of SPI flash, making it self-contained for most IoT applications.

The ESP32-H2 core is a single 32-bit RISC-V processor running at 96 MHz. Its IEEE 802.15.4 radio enables both Zigbee and Thread/Matter communication for smart home integration, while BLE 5 handles local device connectivity. The SoC includes hardware cryptographic accelerators (AES-128/256, SHA, RSA, ECC, HMAC) and secure boot for production-grade security. Up to 19 GPIO pins support I2C, I2S, SPI, UART, ADC, LED PWM, GDMA, TWAI, MCPWM, and USB Serial/JTAG.

This is a bare module requiring soldering onto a custom PCB with supporting power supply and circuitry. For prototyping, the ESP32-H2-DevKitM-1 development board (product 5715) is the recommended starting point. Well-suited for smart light switches, sensors, and other mains-powered smart home nodes.

## Where to Buy

- [Adafruit](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5716&ref=openhardware.directory&product=esp32-h2-mini-1&source=md-export) — 2.25

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5716&ref=openhardware.directory&product=esp32-h2-mini-1&source=md-export)
- [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5716%2F5716-datasheet.pdf&ref=openhardware.directory&product=esp32-h2-mini-1&source=md-export)

## Tags

`esp32-h2`, `espressif`, `zigbee`, `thread`, `matter`, `ble`, `module`, `mini`

## Images

![ESP32-H2-MINI-1 Module](https://nbg1.your-objectstorage.com/openhardware-directory/entities/esp32-h2-mini-1/5a2e454d44dc.jpg)
![ESP32-H2-MINI-1 Module](https://nbg1.your-objectstorage.com/openhardware-directory/entities/esp32-h2-mini-1/d6021af0a4db.jpg)

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