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Pin | Function |
|---|---|
D0/A0/GPIO2 | Battery Voltage Sense* |
D1/A2/GPIO3 | Servo 1 PWM |
D2/A2/GPIO4 | Servo 2 PWM |
D3/A3/GPIO5 | Servo 3 PWM |
SDA/D4/GPIO6 | I2C SDA* |
SCL/D5/GPIO7 | I2C SDL* |
TX/D6/GPIO21 | UART TX |
RX/D7/GPIO20 | UART RX |
SCK/D8/GPIO8 | NEOPIXEL PWM |
* Note that due to the power system rework, the voltage sense does not sense the battery but rather I wired it to the power supply so it should mimic the voltage of that (5V). It is designed with a voltage divider so the voltage reading should not be 5V but you can use this to tune your code.
* Note there are multiple I2C output connectors but all outputs and the display use the same I2C bus.
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You may refer to the images below to see what all pins are connected to or to see the position of the pins
Further Help
Feel free to ping Ryan Scomazzon if you have questions!