The autoguider needs to supply a relay for each direction, or, a +5 VDC TTL signal for each direction, or, a serial connection sending LX200 protocol commands.
If using a relay box, wire the interface circuit such that when a relay
closes, a +5VDC TTL signal is supplied as follows:
If using a control signal, tie the control signals so that the control
signal going to logical high raises the input voltage to a +5VDC level
as follows:
(this scheme mirrors the four direction buttons on the hand paddle)
All guide functionality continues to exist with the autoguider on. For instance, in guide+stay mode, flipping the hand paddle mode switch momentarily to the right will calculate drift, and null the telescope's drift. Immediately re-initiate telescope control program guiding by momentarily flipping the hand paddle mode switch to the left and then center the switch. In guide+record mode, a record is kept of the autoguider's corrections.
The hand paddle can continue to be used. Pressing a direction
button will add its guiding correction to the autoguider.