joseMiguel
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Hi,
One of my studend has made a board to drive stepper motors.
The problem is that, the PC could not communicate with the PIC18F4550 in self power mode.
We use the PICDEM FS USB framework (HID custom demo modified software
The student has made a small board with an another PIC18F4550 in bus powered mode and it works.
We have verify the hardware, there no ground problem and the VUSB capacitor is on the board.
Could you please help us and give to us some ideas for investigate.
Thank you
Jose Miguel
One of my studend has made a board to drive stepper motors.
The problem is that, the PC could not communicate with the PIC18F4550 in self power mode.
We use the PICDEM FS USB framework (HID custom demo modified software
The student has made a small board with an another PIC18F4550 in bus powered mode and it works.
We have verify the hardware, there no ground problem and the VUSB capacitor is on the board.
Could you please help us and give to us some ideas for investigate.
Thank you
Jose Miguel