The transponder testing continues! I ran the transponders in several cars yesterday, in real racing conditions, with more than one per race. No problems occurred. I also verified operation of the remainder of the programs (currently one per transponder ID number). Only one refused to function, so that makes 25 out of 26 good.

I’ve double-checked the code for the ID that didn’t work, and have found nothing obvious. I’m sure there’s a clue somewhere that I’m missing! For now I’ll just set it aside, but past experience tells me that these situations usually indicate a problem that is just waiting to bite me on the ass (and always at the worst time).

When funds become available I will order the PIC12F683 microprocessors that will hold many more ID numbers, and continue to accumulate new ID numbers from AMB and MRT transponders.

Maybe it’s time to get back to the decoder design!