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Board overview
Seeed Studio XIAO ESP32C3
Seeed Studio · XIAO
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Showing 14 of 14 pins
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
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Mapped source · Seeed XIAO ESP32C3 wikiOfficial- USB-C at top, component side up; labels follow Seeed's XIAO ESP32C3 pin table.
- GPIO is 3.3 V only and is not 5 V tolerant.
- Only D0-D3 are analog inputs (ADC1 on D0/D1, ADC2 on D2/D3); D labels are not raw GPIO numbers.
All 14 pins
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | ADC | GPIO2 | ||
| 2 | ADC | GPIO3 | ||
| 3 | ADC | GPIO4 | ||
| 4 | ADC | GPIO5 | ||
| 5 | I2C | I2C | GPIO6 | |
| 6 | I2C | I2C | GPIO7 | |
| 7 | UART | UART | GPIO21 | |
| 14 | Power | 5V | ||
| 13 | Ground | GND | ||
| 12 | Power | 3V3 | ||
| 11 | SPI | SPI | GPIO10 | |
| 10 | SPI | SPI | GPIO9 | |
| 9 | SPI | SPI | GPIO8 | |
| 8 | UART | UART | GPIO20 |