Gday Logan
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so using direct serial is the same or not as st4?
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Direct serial commands to the handbox are totally different to ST4.
Not sure what you mean here????
When using serial pulseguides, the PHD talks to the handbox rs232 port via the PC serial port and sends proprietary commands to start moving and stop moving. This requires an ASCOM driver inbetween.
The ST4 port on the mount uses simple switches, that when closed, start a guide operation. ( ie no ASCOM required )
The PC needs a way to select these switches properly, and hence needs a specialised USB or parallel to ST4 cable
Things like the LPT converter supplied by shoestring astronomy
http://www.store.shoestringastronomy...l_GPINT_PT.pdf
or the USB converter
http://www.store.shoestringastronomy...nual_GPUSB.pdf
allow this to happen, but it can only guide, it has no other functions.
Andrew