Nick,  If you go to the SatPC32 webpage, you will find schematics for using the U12 or U3.  Here is the direct link for each: https://www.dk1tb.de/lj_piggyback.JPG%C2%A0https://www.dk1tb.de/lj_piggyback... personally use the U12 (actually I have 2 of them).  My original one has the Labjack piggyback the you could buy with Nova a long time ago.  I bought a second U12 and built the interface as my loaner version if one of my ARISS schools needs one. Hope this helps. 73,Charlie Sufana AJ9NOne of the ARISS mentors   In a message dated 2024-11-17 16:14:59 Eastern Standard Time, amsat-bb@amsat.org writes:

Does anybody have a schematic of the relay drivers pcb board used with satpc32 and labjack. My labjack creates the rotor sql file but does not move the rotator under computer control.  What pins from the Labjack move the driver?

nick

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