Comprehensive set up guide

[fergusL]

Need a comprehensive set up guide, as different domes will require different setups.

Huntsman currently emulates a 3 wire (two direction inputs and one movement input) motor mode in software for a 2 wire motor. This is done by wiring one relay (rotation relay) into the common input of a second relay (direction relay), whose NC and NO terminals act as input into the 2 wire mode motor.
MQ observatory requires two inputs set up to be active low, with active voltage of 12v. As a result we can't use our relay set up (active high) or the sinking outputs on the automationhat (5V). Instead we need two relays with an external 12V supply.

There are likely other possible set up requirements, so we need a comprehensive guide for wiring of the automation hat, as well as setting the correct gpio pin numbers in software etc etc