Table 1.
Pin | Digital | Analog | I2C | UART |
---|---|---|---|---|
1 | D0 (Primary input/output) | A0 (Primary input) | SCL (I2C Clock) | RX (UART Receive) |
2 | D1 (Secondary input/output) | A1 (Secondary input) | SDA (I2C Data) | TX (UART Transmit) |
3 | VCC (Power for Grove Module, 5 V/3.3 V) | |||
4 | GND (Ground) |