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Microcontroller
ESP32-H2-DevKitM-1
Espressif's entry ESP32-H2 development board for Bluetooth LE, IEEE 802.15.4, Thread, Zigbee, and Matter prototyping.
Processor
ESP32-H2 RISC-V SoC in ESP32-H2-MINI-1 / MINI-1U module
Logic
3.3 V GPIO
Power
USB-C to UART port, 5 V header, or 3V3 header
Format
Dual-row breadboard dev kit
Check before wiring
- No Wi-Fi radio; ESP32-H2 targets BLE and 802.15.4 networks.
- GPIO9 is the BOOT strap and should not be externally forced at reset unless intentionally entering download mode.
- GPIO8 is connected to the onboard RGB LED and may log or toggle during firmware startup.
- GPIO13/GPIO14 availability depends on the low-power crystal population and board revision.
Interfaces
GPIOSPIUARTADCUSBBluetoothZigbeeThread
Source-backed connector
Interactive pin map
Pin map
Connector
ESP32-H2-DevKitM-1 J1/J3 headers
USB at the bottom, component side up, headers on both edges
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.
- Official Espressif header tables list these J1 and J3 pin names and functions.
- GPIO9 is the BOOT strap; holding Boot and pressing Reset enters firmware download mode.
- GPIO8 drives the onboard addressable RGB LED, and GPIO26/GPIO27 are the native USB D-/D+ pair.
- GPIO13/GPIO14 may be tied to the optional 32.768 kHz crystal population depending on board revision.
All 30 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | Power | 3V3 | ||
| 2 | System | |||
| 3 | SPI | SPI | FSPIQ | |
| 4 | ADC | FSPICS0 / ADC1_CH0 | ||
| 5 | ADC | FSPIWP / ADC1_CH1 / MTMS | ||
| 6 | ADC | FSPIHD / ADC1_CH2 / MTDO | ||
| 7 | Alt | XTAL_32K_P | ||
| 8 | Alt | XTAL_32K_N | ||
| 9 | ADC | FSPICLK / ADC1_CH3 / MTCK | ||
| 10 | ADC | FSPID / ADC1_CH4 / MTDI | ||
| 11 | Reserved | |||
| 12 | Power | VBAT | ||
| 13 | Ground | GND | ||
| 14 | Power | 5V | ||
| 15 | Ground | GND | ||
| 16 | Ground | GND | ||
| 17 | UART | UART | U0TXD / FSPICS2 | |
| 18 | UART | UART | U0RXD / FSPICS1 | |
| 19 | GPIO | ZCD0 | ||
| 20 | GPIO | ZCD1 | ||
| 21 | SPI | SPI | FSPICS3 | |
| 22 | GPIO | |||
| 23 | Alt | RGB LED / LOG | ||
| 24 | GPIO | |||
| 25 | Ground | GND | ||
| 26 | System | |||
| 27 | Ground | GND | ||
| 28 | Alt | |||
| 29 | Alt | |||
| 30 | Ground | GND |
Why it matters
- Official user guide includes J1/J3 header tables and links to current schematics.
- Breaks out most ESP32-H2-MINI module IO pins except the internal flash bus.
- Includes both native USB pins and a USB-to-UART programming path.
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