ESP32-H2-DEV-KIT-N4 Module without Soldering - RISC-V Zigbee 3.0 Thread Matter & BLE 5.2 Development Board

Specifications

• Core Module: ESP32-H2-MINI-1-N4
• Processor Architecture: 32-bit RISC-V single-core CPU (up to 96 MHz)
• On-Board Memory: 320 KB SRAM, 128 KB ROM, 4 KB LP SRAM
• Flash Memory: 4 MB Embedded SPI Flash
• Wireless Connectivity:
• IEEE 802.15.4: Native Zigbee 3.0, Thread, and Matter protocols
• Bluetooth 5.2: BLE with high duty cycle advertisement, long range, and coded PHY support
• USB Interface: USB Type-C connector with on-board USB-to-UART bridge (CH343) and native USB JTAG debugging
• Power Options: 5V via USB Type-C, external 5V header, or regulated 3.3V power input
• Headers & Mounting: Unsoldered 2.54mm dual-row pitch headers + castellated edge pads
• User Controls & LEDs:
• On-board Addressable RGB LED (WS2812 style)
  Power Status LED
• Boot Button & Reset Button
• Peripherals: Multiplexed GPIOs supporting SPI, UART, I2C, I2S, PWM, and 12-bit ADC

Applications

• Smart Home & Automation: Matter end-devices, Thread boundary nodes, Home Assistant Zigbee sensors, and automated lighting controls.
• Low-Power Mesh Networks: Multi-node industrial telemetry networks running Zigbee 3.0 mesh protocol.
• Custom Enclosure Integrations: Slimline wall switch inserts, junction box IoT modules, and custom piggyback carrier boards that require soldering wires directly to castellated pads.

Unlock New Capabilities

• Where You Started (Past Projects): If you previously relied on standard ESP8266 or ESP32-WROOM boards using 2.4GHz Wi-Fi, you were likely constrained by high power draw, Wi-Fi router congestion, and bulky pre-soldered headers that forced large project boxes.
• What This Unlocks (Feature Upgrade): Upgrading to the ESP32-H2-DEV-KIT-N4 brings native Matter over Thread and Zigbee 3.0 support without adding extra transceivers. Because headers are unsoldered, you can achieve ultra-thin profile designs, solder wire harnesses directly, or surface-mount the board to custom carrier PCBs while cutting power consumption down to microamps.
• Effort & Requirements: Intermediate Level. Requires soldering equipment (if using pin headers or wires) and basic familiarity with Arduino IDE 3.x+ or Espressif ESP-IDF v5.0+. Needs a USB Type-C cable and a Thread/Zigbee coordinator (e.g., Home Assistant Yellow or Sonoff Zigbee Dongle).

Package Includes:

• 1 x ESP32-H2-DEV-KIT-N4 Module without Soldering - RISC-V Zigbee 3.0 Thread Matter & BLE 5.2 Development Board

Frequently Asked Questions (FAQ)

• Why is this version listed as "Without Soldering"?
  The board ships with unsoldered header pins included in the package, giving you the flexibility to solder headers on top, bottom, or direct-wire to custom enclosures.
• Does this board support Wi-Fi?
  No, the ESP32-H2-MINI-1 module features IEEE 802.15.4 (Zigbee 3.0 and Thread) and Bluetooth 5.2 (LE), but does not contain a Wi-Fi radio.
• Is the ESP32-H2-DEV-KIT-N4 compatible with Matter?
  Yes, it natively supports Matter over Thread and Matter over BLE commissioning.
• Which flash size is integrated into this module?
  This model includes 4 MB (N4) of embedded SPI flash memory.
• Can I program this board using the Arduino IDE?
  Yes, it is supported under Espressif's official ESP32 Arduino Core version 3.0.0 and above.
• What architecture does the ESP32-H2 use?
  It uses Espressif's 32-bit single-core RISC-V processor operating at up to 96 MHz.
• How do I put the board into bootloader mode?
  Press and hold the BOOT button, press and release the RESET button, then release the BOOT button.
• Can I surface-mount this board directly to another PCB?
  Yes, the module edge features castellated holes designed for surface mounting without pins.
• What USB bridge IC is used on this board?
  It features an on-board WCH CH343 USB-to-UART converter for seamless flash programming and debugging over USB-C.
• Is the GPIO logic voltage 5V tolerant?
  No, all GPIO pins are strictly 3.3V logic. Always use level shifters for 5V signals.
• Can I use this board with Home Assistant?
  Yes, you can flash it as a Zigbee End Device or Thread Node and integrate it with Home Assistant ZHA or Zigbee2MQTT.
• How is the on-board RGB LED controlled?
  The addressable RGB LED is internally connected to GPIO8 and can be controlled using WS2812/NeoPixel libraries.
• Can I power the board from a 3.7V LiPo battery?
  You can feed regulated 3.3V to the 3V3 pin or use a battery management board feeding into the 5V input.
• What is the header pin pitch?
  Standard 2.54 mm (0.1 inch) dual-row pitch.
• Does the module support ESP-IDF?
  Yes, full support is provided in Espressif ESP-IDF v5.0 and later.
• Is MicroPython supported on the ESP32-H2-DEV-KIT-N4?
  Yes, official MicroPython nightly and stable builds support the ESP32-H2 RISC-V core.
• What is the Bluetooth version supported?
  Bluetooth 5.2 Low Energy (LE) with Long Range and Coded PHY capability.
• Can this board act as a Zigbee Coordinator?
  Yes, firmware can be compiled to run it as a Zigbee router, end-device, or coordinator node.