Waveshare ESP32-H2-Zero is a tiny USB-C development board based on Espressif Systems’ ESP32-H2 RISC-V SoC with Zigbee, Thread, and Bluetooth LE (BLE) connectivity.
It’s specifically based on the ESP32-H2FH4S chip with 4MB Flash memory, and features two 9-pin headers and castellated for I/Os, plus four additional pads. It also features a ceramic antenna instead of an external antenna, as well as BOOT and Reset buttons.
ESP32-H2 Mini specifications:
- SoC – Espressif Systems ESP32-H2FH4S
- CPU – 32-bit RISC-V SoC clocked at up to 96 MHz
- Memory – 320 KB SRAM, 4 KB LP memory
- Storage – 128 KB ROM, 4MB flash
- Wireless
- 802.15.4 radio with Zigbee 3.0, Thread 1.3, and Matter support
- Bluetooth 5.2 LE/Mesh
- USB – USB Type-C port for power, programming, and debugging
- Expansion
- 2x 9-pin header and castellated holes with up to 15x GPIO, 5x ADC, UART, Fast SPI, JTAG, and power signals (5V, 3.3V, GND)
- 4x pads used for GPIOs, USB (D+/D-), BOOT, or LOG
- Misc – BOOT and Reset buttons, ceramic antenna, WS2812 RGB LED
- Power Supply
- 5V via USB-C port or 5V pin
- ME6217C33M5G LDO up to 800mA
- Dimensions – 23.50 x 15.24 mm
- Weight – TBD
The company provides instructions and code samples to use the ESP32-H2-Zero with the ESP-IDF framework or the Arduino IDE. Samples include Hello World, GPIO, RGB LED, UART, I2C, SPI, Bluetooth, and Zigbee demos. You’ll find all that on the wiki for the board, along with the PDF schematic.
The ESP32-H2 was first unveiled in August 2021, and the ESP32-H2-DevKitM-1 board was launched in 2023. Since then, we’ve had various ESP32-H2 boards and devkits from Olimex, LILYGO (ESP32-S3 + ESP32-H2 gateway), Waveshare, and M5Stack, among others. The ESP32-H2-Zero is the smallest and cheapest we’ve seen so far.
The ESP32-H2-Zero board can be purchased on AliExpress for $3.79 without headers or $4.65 with, and you’ll also find it on Amazon and the Waveshare online store.
Â
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.
Support CNX Software! Donate via cryptocurrencies, become a Patron on Patreon, or purchase goods on Amazon or Aliexpress. We also use affiliate links in articles to earn commissions if you make a purchase after clicking on those links.
