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Expansion header pinout
| Signal | Pin Nr. | Pin Nr. | Signal |
|---|---|---|---|
| 3.3 V | 1 | 2 | 5 V |
| Jetson I2C SDA, SMARC I2C SDA, SMARC GPIO 1 | 3 | 4 | 5 V |
| Jetson I2C SCL, SMARC I2C SCL, SMARC GPIO 0 | 5 | 6 | GND |
| 7 | 8 | ||
| GND | 9 | 10 | |
| 11 | 12 | ||
| 13 | 14 | GND | |
| 15 | 16 | ||
| 3.3 V | 17 | 18 | |
| 19 | 20 | GND | |
| 21 | 22 | ||
| 23 | 24 | ||
| GND | 25 | 26 | |
| 27 | 28 | ||
| 29 | 30 | GND | |
| 31 | 32 | ||
| 33 | 34 | GND | |
| 35 | 36 | ||
| 37 | 38 | ||
| GND | 39 | 40 |