Things you can do with your ARMADILLO or PLATYPUS:
→ main telescope and guider scope focuser control
→ focuser plus mirror fan control
→ rotator and focuser control
→ power on / off remotely a laser pointer, mirror fans, plus focuser control
→ … devote any of the 2 ports for any purpose – make that 3 for the Platypus (focuser + fans + rotator…