[techhelpbb]

No limit switches will not suffer this issue.

As to the parts if you implement the whole thing...TTL and all...and strip off all the extras from the prototype we made.

The input from the encoders (both of them...one on either side):
74HC14

The optocoupler:
PS2501-4

The final outputs to the Jaguars:
74HC04 (one for each Jaguar so that's 4).

We used 680 Ohm pull up resistors for the diode side of the coupler.
We used 4.7k Ohm pull up resistors for the NPN transistor side of the coupler.

Depending on how crazed you want to get you might also need the Pan Pacific (Cinch Jones) headers (like the the ones on the Jaguar).

If you want to get really nuts get the PicoBlade connectors for the U.S. Digital encoders. Be warned those crimp pins are *very* tiny and you'll need the right crimper for it. Molex wants about $200 for that tool. Dig around on eBay and you'll find a cheaper solution for less than $100.

However, in the end, you could just butcher the tails for the encoders from U.S. Digital and use some female receptacle header for the Jaguar side then hand solder the PCB end of the wires to the PCB.

I sent you an e-mail in private, I don't have all the documentation ready to present yet, but I'll send you a schematic from the original idea.