WallaceITBoard is working! The classical blinky test past smoothly and now an initial version of the test - and maybe other usages - firmware is ready and uploaded on Github: Link
Board is working! The classical blinky test past smoothly and now an initial version of the test - and maybe other usages - firmware is ready and uploaded on Github: Link
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Good call
Are you sure? yes | no
Yes, in this particular family (PIC16F1454/5/9) the device recovers the clock from the USB line and the oscillator can thus be avoided. I can confirm that in my application USB just works fine without any external crystal or oscillator.
Unfortunately, it's not the same for PIC18F14K50: it's datasheet in fact states: "Because of timing requirements imposed by the USB specifications, the Primary External Oscillator is required for the USB module".
Are you sure? yes | no
USB works fine with internal oscillator?
Most schematics that use it have included one, and that would completely blow either size or price requirements for my project.
I'm doing a similar board with the PIC18F14k50 because they're ~15 cents each, which is great.
Are you sure? yes | no