Possible issue with some PIC18F2550 samples and a fix.

[jman 31]

Nope, It was a problem, but not the only one. I had the programming cable connections on the ICSP cable mirrored. I fixed that and now Winpic is saying it's OK, but when it tries to load the FW it goes through the process and then quits and gives me the FAILED error. Would having the 33K resistor to ground, on the PIC that doesn't need it cause a problem?

Will the LCD come on if the PIC is not programmed?

[dmitri]

Nope, It was a problem, but not the only one. I had the programming cable connections on the ICSP cable mirrored.

Not good.

I fixed that and now Winpic is saying it's OK

When does it say OK? Where it siad "ERROR: Programming Failed!" before?

, but when it tries to load the FW it goes through the process and then quits and gives me the FAILED error.

Quits? Quits where? Where does it give 'FAILED' error now?

Would having the 33K resistor to ground, on the PIC that doesn't need it cause a problem?

The resistor will not cause this problem.

Will the LCD come on if the PIC is not programmed?

It will if Atmega is programmed.

[orion24]

I'm confused, it's necesary to solder 22k-47k resistor between pin26 (pic) to ground, but is the ICSP cable the same from the schematic you provided, with 4 pins from megadrum board and 5 pins to serial port??
Or pin 6 from ICSP connector is no longer connected to serial port??

[orion24]

I've finished this project, now I'm not confused.