Wiring standard¶
This wiring standard is our best practice, all new cabling should comply with this at all times, and be labled as compliant. Any non-compliant existing wiring should be labled as non-compliant, with a complete list of connections listed both on the wires and in the coresponding git repository
Wire colour¶
Power¶
- Black = gnd/0v
- Purple = 12v
- Red = 5v
- Orange = 3.3v
- Green = Battery voltage
I2C¶
- Blue = SCL
- Yellow = SDA
Serial¶
- White & Grey = RX and TX, Rx mark on both ends with a red mark.
Servos¶
- Brown = gnd
- Red = pwr
- Orange = signal
Wire thickness¶
Wire thickness should be chosen accorning to the maximum current draw through the wire.
- For currents up to 6 amps a guage of AWG 14 (1.6mm diameter) or greater should be used,
- only the battery or sailwinch wires should require this much current.
- For currents up to 1.8 amps a guage of AWG 19 (.1mm diameter) or greater should be used,
- the electronics power wires, RoWind and servos may require this wire.
- for currents up to 900mA a guage of AWG 22 (.64mm diameter) or greater should be used,
- this will handle all external data and sensor power wires, with the exception of those mentioned above.