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Board overview
BBC micro:bit V2
Micro:bit Educational Foundation · micro:bit
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Showing 21 of 21 pins
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
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Mapped source · micro:bit edge connector pinoutOfficial- Pin numbers are micro:bit pad labels mapped to nRF52833 GPIO, per the official micro:bit edge connector pinout.
- Edge connector logic is 3.3 V; the 3V pads supply ~3.3 V and can also be used to power the board.
- Many pads are shared with the LED display, buttons, speaker, microphone, or internal I2C and must be freed before reuse.
All 21 pins
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| Ring pads (banana/croc) | ||||
| 1 | ADC | P0.02 / AIN0 · GPIO, analog, touch, PWM. | ||
| 2 | ADC | P0.03 / AIN1 · GPIO, analog, touch, PWM. | ||
| 3 | ADC | P0.04 / AIN2 · GPIO, analog, touch, PWM. | ||
| 4 | Power | 3V | ~3.3 V supply ring. | |
| 5 | Ground | GND | ||
| Edge pins | ||||
| 5 | ADC | P0.31 / AIN7 · Shared with LED display column 3. | ||
| 6 | ADC | P0.28 / AIN4 · Shared with LED display column 1. | ||
| 7 | GPIO | P0.14 · Shared with Button A. | ||
| 8 | GPIO | P1.05 · Shared with LED display column 4. | ||
| 9 | GPIO | P0.11 · Shared with LED display column 2. | ||
| 10 | GPIO | P0.10 · NFC2 capable; NFC disabled by default. | ||
| 11 | GPIO | P0.09 · NFC1 capable; NFC disabled by default. | ||
| 12 | ADC | P0.30 / AIN6 · Shared with LED display column 5. | ||
| 13 | GPIO | P0.23 · Shared with Button B. | ||
| 14 | GPIO | P0.12 · Reserved for accessibility. | ||
| 15 | SPI | SPI | P0.17 / SCK | |
| 16 | SPI | SPI | P0.01 / MISO | |
| 17 | SPI | SPI | P0.13 / MOSI | |
| 18 | GPIO | P1.02 | ||
| 19 | I2C | I2C | P0.26 / SCL · Shared with internal I2C bus. | |
| 20 | I2C | I2C | P1.00 / SDA · Shared with internal I2C bus. | |