I built and assembled a small prototyping board for PIC18F2550/PIC18F25K50. The PCB has been produced by SeeedStudio (excellent results), and I assembled first prototype by hand (quickly).
The board can be plugged directly on a breadboard, can be programmed using any PIC programmer via the 5 pin header.
Almost all pins are exposed, and I added two jumpers to make it possible to physically connect/disconnect two LEDs on PIC pins.
Another jumper provide the possibility to pull-down one pin in order to trigger the USB bootloader (if you prefer avoid an external programmer).
I didn't assembled the crystal on my board because I'm trying PIC18F25K50, and I want to check the possibility to do USB using internal crystal only.
I'll post the whole project, schematics and gerbers, and example souce codes (using Microchip C, Swordfish Basic) in few days.
Here some photos of the board
PIC18F2550 / PIC18F25K50 board
Moderators: David Barker, Jerry Messina
PIC18F2550 / PIC18F25K50 board
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- David Barker
- Swordfish Developer
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Re: PIC18F2550 / PIC18F25K50 board
I look forward to seeing the code you come up with...
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- Swordfish Developer
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Re: PIC18F2550 / PIC18F25K50 board
Nice little board octal.
So far, it seems to work ok.
I have the 45K50 running USB with SF using the internal osc. The chip has Active Clock Tuning (ACT) which is supposed to keep it to +/-0.2% over the full temperature range.I want to check the possibility to do USB using internal crystal only
So far, it seems to work ok.