ET-M13
ESP32-H2 Thread / Zigbee Board
BLE 5 + Thread / Zigbee / Matter, no Wi-Fi, low power
AED 29.00
Out of stockOverview
BLE 5 + Thread / Zigbee / Matter, no Wi-Fi, low power
The ET-M13 is built around the Espressif ESP32-H2 — RISC-V 96MHz, 320KB SRAM, 4MB flash (module), Bluetooth 5 LE + IEEE 802.15.4 (Thread, Zigbee) — no Wi-Fi.
Two Qwiic / STEMMA QT connectors let you chain it with other boards without soldering, and the 2.54 mm header fits a breadboard.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Battery Zigbee sensors
- Matter-over-Thread devices
- BLE beacons
Key features
What makes it different
MCU
Espressif ESP32-H2: RISC-V 96MHz, 320KB SRAM, 4MB flash (module), Bluetooth 5 LE + IEEE 802.15.4 (Thread, Zigbee) — no Wi-Fi
USB
USB-C, native USB-Serial-JTAG
I/O
15 GPIO on the header, ADC, Qwiic at 3.3V
Power
5V USB-C → AP2112K 3.3V; VBUS and 3V3 on the header for battery use
Qwiic / STEMMA QT
Two JST-SH connectors plus a 2.54 mm header — 3.3 V and 5 V hosts.
Open documentation
Schematic, BOM and layout notes published for every board.
Specifications
Technical specifications
| MCU | Espressif ESP32-H2: RISC-V 96MHz, 320KB SRAM, 4MB flash (module), Bluetooth 5 LE + IEEE 802.15.4 (Thread, Zigbee) — no Wi-Fi |
|---|---|
| USB | USB-C, native USB-Serial-JTAG |
| I/O | 15 GPIO on the header, ADC, Qwiic at 3.3V |
| Power | 5V USB-C → AP2112K 3.3V; VBUS and 3V3 on the header for battery use |
| Size | 45.7 × 25.4 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 2 × Qwiic / STEMMA QT (JST SH 4-pin) · 19-pin 2.54 mm header · USB-C 16P receptacle (USB 2.0) — USB-C (power + native USB / bridge) |
| Main IC | ESP32-H2-MINI-1-N4 (LCSC C18203134) |
| Revision | Rev A |
| Libraries | ESP-IDF (esp-thread-br, esp-zigbee-sdk, esp-matter), Arduino-ESP32 3.x, ESPHome (Zigbee/Thread) |
|---|
Performance
Power use
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VBUS | Power | 5V from USB-C |
| 2 | 3V3 | Power | 600mA LDO |
| 3 | GND | Ground | Ground |
| 4 | EN | Control | Reset, active low |
| 5 | IO0 | GPIO | GPIO / ADC |
| 6 | IO1 | GPIO | ADC1_0 |
| 7 | IO2 | GPIO | Strap — keep floating at boot |
| 8 | IO3 | GPIO | Strap / ADC |
| 9 | IO4 | GPIO | ADC1_3 |
| 10 | IO5 | GPIO | ADC1_4 |
| 11 | SDA | I²C | IO12 — I²C SDA (Qwiic) |
| 12 | SCL | I²C | IO22 — I²C SCL (Qwiic) |
| 13 | IO8 | GPIO | Strap — high at boot (10k pull-up) |
| 14 | IO11 | GPIO | GPIO |
| 15 | IO13 | GPIO | 32k XTAL_P / GPIO |
| 16 | IO14 | GPIO | 32k XTAL_N / GPIO |
| 17 | IO23 | GPIO | RX0 |
| 18 | IO24 | GPIO | TX0 |
| 19 | IO25 | GPIO | Strap / GPIO |
Qwiic / STEMMA QT pins: GND, VIN, SDA, SCL (same on both connectors).
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-M13 ESP32-H2 Thread / Zigbee Board (assembled)
- 1 × 19-pin 2.54 mm male header, unsoldered
Getting started
- Plug in a Qwiic / STEMMA QT cable, or solder the header and wire VIN, GND, SDA and SCL
- Libraries: ESP-IDF (esp-thread-br, esp-zigbee-sdk, esp-matter), Arduino-ESP32 3.x, ESPHome (Zigbee/Thread)
Compare
Which wireless board?
| ESP32-H2 Thread / Zigbee Board (this board)This board | ET-M14 nRF52840 BLE Board | ET-M17 ESP8266 Wi-Fi Board | ET-M03 ESP32-C6 Thread / Zigbee Board | |
|---|---|---|---|---|
| What it does | BLE 5 + Thread / Zigbee / Matter, no Wi-Fi, low power | Nordic nRF52840 module with native USB-C, SWD and Qwiic | ESP-12F with one-click USB-C upload and Qwiic | Wi-Fi 6, BLE and 802.15.4 (Thread, Zigbee, Matter) |
| Interface | — | — | — | — |
| Best for | Battery Zigbee sensors | BLE wearables and keyboards | Tasmota and ESPHome switches | Matter and Thread smart-home devices |
| Price | 29 AED | 29 AED | 25 AED | 28 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.