Pin Diagram (v2.2)

Notes:

1. All Arduino Nano pin headers (1-30) are protected by 220Ω series resistors.
2. The GND pin headers immediately below the row of Arduino Nano pin headers are also protected by 220Ω series resistors.
3. SIG5V is supplied by the Arduino Nano's on board 5V regulator. PWR5V is supplied by the 5V/3A "battery elimination circuit" (BEC) on the Arduino Nano Carrier.
4. The signal pins of DxO are connected to the corresponding Arduino Nano pin (through the 220Ω series resistor).There is a 2.2kΩ resistor between the signal pins of DxI and DxO to facilitate simple selection of autonomous or radio control.