surei Posted September 13, 2009 Report Share Posted September 13, 2009 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 regardsReiner Quote Link to comment Share on other sites More sharing options...
surei Posted September 13, 2009 Author Report Share Posted September 13, 2009 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.ThanksReiner Quote Link to comment Share on other sites More sharing options...
lylehaze Posted September 13, 2009 Report Share Posted September 13, 2009 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 Quote Link to comment Share on other sites More sharing options...
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