Item specifics
Description
ESP32-H2-Zero Product Overview
When selecting a development board for smart home gateways, industrial wireless sensors, or Matter end devices, designers typically focus on three things: whether the wireless protocols cover both BLE and 802.15.4, whether the board size can fit into compact enclosures, and whether the development toolchain is mature and well-supported. The Waveshare ESP32-H2-Zero was built for exactly that requirement.
The board is powered by the Espressif ESP32-H2FH4S chip featuring a 32-bit RISC-V single-core processor running at up to 96MHz, with 320KB SRAM, 128KB ROM, 4KB LP memory, and 4MB in-package flash. The chip integrates Bluetooth LE 5 and IEEE 802.15.4 (Zigbee 3.0 and Thread) wireless communication, with support for Matter application-layer protocols and Bluetooth Mesh. A 2.4G ceramic antenna provides superior RF performance.
Onboard resources include a WS2812 RGB LED, BOOT button (press and hold, then press Reset to enter download mode), RESET button, USB Type-C port for programming and debugging, and an ME6217C33M5G LDO with up to 800mA output. Up to 15 GPIOs (5 with ADC function) are exposed through two 9-pin headers and castellated holes, supporting UART, SPI, I2C, I2S, LED PWM, and JTAG. The board is pin-compatible with the ESP32-H2-DevKitM-1, and the castellated design allows direct soldering onto user-designed carrier boards.
Software support includes Espressif's ESP-IDF development environment and Arduino IDE, with a complete SDK, open-source tutorials, and example programs (Hello World, RGB LED, BLE, Zigbee, UART, I2C, SPI, etc.) for rapid development. Two versions are available: ESP32-H2-Zero (without headers) and ESP32-H2-Zero-M (with soldered yellow headers).
| Model | ESP32-H2-Zero / ESP32-H2-Zero-M |
| Chip | ESP32-H2FH4S |
| CPU | 32-bit RISC-V single-core, up to 96MHz |
| Memory | 320KB SRAM + 128KB ROM + 4KB LP Memory |
| Flash | 4MB (in-package) |
| Wireless | BLE 5 (LE) + IEEE 802.15.4 (Zigbee 3.0 / Thread) |
| Bluetooth | Bluetooth 5.3 LE / Mesh, Long Range (Coded PHY) & 2Mbps |
| 802.15.4 | Thread 1.3 / Zigbee 3.0 / Matter, 250 Kbps OQPSK PHY |
| Antenna | 2.4G Ceramic Antenna |
| LED | WS2812 RGB LED |
| Buttons | BOOT + RESET |
| USB | USB Type-C for programming & debugging |
| LDO | ME6217C33M5G, up to 800mA |
| GPIO | Up to 15 (including 5 ADC pins) |
| Interfaces | UART, SPI, I2C, I2S, LED PWM, JTAG |
| Dimensions | 23.50mm × 15.24mm |
| Development | ESP-IDF (v5.1+) / Arduino IDE |
| Compatibility | Pin-compatible with ESP32-H2-DevKitM-1 |
ESP32-H2-Zero Applications
Smart home gateways and Matter end devices
Industrial automation wireless sensor nodes
Zigbee 3.0 / Thread networking development and debugging
Consumer electronics wireless control and IoT edge devices
Healthcare device wireless communication modules
RISC-V embedded development learning and teaching
FAQ
Q: What wireless protocols are supported?
A: Bluetooth LE 5 and IEEE 802.15.4, covering Zigbee 3.0, Thread 1.3, and Matter application-layer protocols. The Bluetooth subsystem also supports Bluetooth Mesh. The 2.4GHz band is compliant with IEEE 802.15.4-2015, supporting 250 Kbps OQPSK PHY.
Q: How do I set up the ESP-IDF development environment?
A: ESP-IDF supports ESP32-H2 from v5.1 onward; install v5.1 or higher. After installing the ESP-IDF extension in VS Code, select ESP32-H2 as the target chip, then compile and flash. Waveshare provides a complete ESP-IDF tutorial and example package covering Hello World, GPIO, RGB LED, BLE, Zigbee, UART, I2C, and SPI.
Q: What should I note when using the Arduino IDE?
A: Select "ESP32H2 Dev Module" in the Arduino Board Manager. The ESP32-H2-Zero uses the ESP32-H2 native USB port instead of UART-to-USB. For Serial.println() to work, enable "USB CDC On Boot" in the Tools menu, or declare an HWCDC object in code to handle USB serial communication.
Q: What is the advantage of the castellated design?
A: The castellated design allows the board to be soldered directly onto a user-designed carrier board without additional connectors or headers, significantly reducing final product size and thickness. The pins are also compatible with the ESP32-H2-DevKitM-1 for a smooth transition from development to production.
QIXINWEI (Shenzhen Qixinwei Technology Co., Ltd.) stocks these parts with same-week shipment from Shenzhen, and offers BOM sourcing plus PCBA customization from prototype to production. Share your BOM and we'll flag cross-references and long-lead items before they stall your build.