So I have a Arduino design that has been working perfectly for about a year and a half and decided that I wanted to upgrade it to include a USB port for program updates etc. Added a uUSB-PA5-II to the design permanently, which by the way is the interface I used to program the design before I decided to attach it permanently, and now with the uUSB-PA5-II connected the design doesn't work. Well actually it's more complicated than that. When I run the design powered up by the USB port everything works fine, but when I disconnect the USB connection and run the design on its own power, nothing!!!!
After a lot of painful troubleshooting I found that if I disconnect the transmit pin on the processor everything works fine when powered up on it's own. So any ideas on what I'm missing?
I've included the schematic to help visualize how everything is connected.
Thanks in Advance,
Ken Dabek
West End Recording
After a lot of painful troubleshooting I found that if I disconnect the transmit pin on the processor everything works fine when powered up on it's own. So any ideas on what I'm missing?
I've included the schematic to help visualize how everything is connected.
Thanks in Advance,
Ken Dabek
West End Recording
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