RLEVIN
Permanently Banned. Buyer Beware. Questionable bus
Well, I seem to have most of the simulator up and running now. The interface between logic set and motors is working fine save for one thing:
The motor control board starts off with a LM339 comparator reading the voltage levels from the pitch and roll 5K pots, comparing them against a similar trim arrangement feeding off of +5V and ground through another set of 5K trim pots. Same lines as goes through the logic set to the ADC at position 9K.
The pots that were in the Hot Seat's control panel had worn wipers, reading sporadically from 5 Ohms to 15MEG Ohms, and while waiting for the heavy-duty pots from HAPP I've got a set of $3 Radio Shack audio trimmers in there while I test out the simulator. I'm down to zeroing out the pots and setting the voltage levels on the comparator, but I'm not seeing much variance in the voltage.
I'm about to start adjusting the pots for the boards, but in the meantime I'm wondering if anyone is familiar enough with the por circuits that they might know the range of voltages I can expect from there.
And yes - there will be photos ande vids when it's together...
The motor control board starts off with a LM339 comparator reading the voltage levels from the pitch and roll 5K pots, comparing them against a similar trim arrangement feeding off of +5V and ground through another set of 5K trim pots. Same lines as goes through the logic set to the ADC at position 9K.
The pots that were in the Hot Seat's control panel had worn wipers, reading sporadically from 5 Ohms to 15MEG Ohms, and while waiting for the heavy-duty pots from HAPP I've got a set of $3 Radio Shack audio trimmers in there while I test out the simulator. I'm down to zeroing out the pots and setting the voltage levels on the comparator, but I'm not seeing much variance in the voltage.
I'm about to start adjusting the pots for the boards, but in the meantime I'm wondering if anyone is familiar enough with the por circuits that they might know the range of voltages I can expect from there.
And yes - there will be photos ande vids when it's together...