Troubleshooting PIC USB

[surei]

Hi,

I have build the PIC USB, since I can live with the documented bugs (I don't plan to send any sysex with it).

I burned the microchip USB bootloader onto the PIC (4550) with the burner, and it verified OK. WHen I connect it to the PC via the USB cable, the HowTo says Windows should find the new device and ask for a driver. However, nothing happens.

Is there any way I can debug this? The hardware is simple enough to be checked by eye, and none of the connections is missing. The reset button also doesn't help, but I would hope for the bootloader to start running after powering up (via USB) anyway. Voltages on the clock pins are somewhere between 0 and 5, so I assume the clock is working.

BTW, does anybody know if the microchip USB driver for this works on 64? If not I guess I cannot upload the application to the chip, correct?

If I upload it from a different PC, will the PIC USB application work on X64? (It is using a standard Windows driver, isn't it?)

Any ideas?

Best regards

Reiner

[surei]

Well, silly me!

I put a 10Mhz crystal on the board for the PIC18F4550, but it needs a 20MHz. Changing that should solve the issue.

Thanks

Reiner

[lylehaze]

Changing the crystal from 10MHZ to 20 MHZ will either fix it, or make it fail twice as fast.

:-)

Glad you found it!

8)

LyleHaze