8 Feb
2022
8 Feb
'22
7:03 a.m.
I remember that project! I saw the original at AA2TX's place. I built a system and wrote my own Linux software since Tony was a DOS/Windows guy, the essence of which was to talk to Predict via UDP and ask it where to point once every 30 seconds, and then bit bang the LPT port to signal the hardware to output a new voltage. It was a while ago so the details are fuzzy, but I think the stock Predict (and I think Gpredict has the same capability) worked, but I may have hacked it.
If I were to do it again today I'd consider something similar, but maybe use an Arduino with a couple of DAC's attached and talk to it via a USB/serial converter. Alas in 2022 Orbit 360 rotors and LPT ports are hard to come by!
de KM1P Joe