My core has been working perfectly for months on a breadboard.
I soldered it onto a new PCB board yesterday (same circuit and parts as the bread board) and it worked fine for about 6 hours.
Now it flashes green and can’t connect a problem it never had before. I put an oscilloscope on Vcc, highest voltage was 3.48 volts during PicMX32 programming, otherwise rock steady. The chip I’m using programs at 3.2v, not 13volts!
Tried to reclaim using the spark phone app, reset it to listening mode, blinking blue, it switched to rapid green and there it remains. I did a factory reset, same outcome. I did an attempted USB claim by spark cli. It was able to connect to the PC in listening mode, installed the correct drivers, got the command line software working. Unable to get to the breathing cyan state, it remains flashing green.
I did the usual router reset, no effect. My spark is flashing green 2 feet from it, certainly range is not the issue.
Unable to get it connected using USB or a bench top power supply with lots of extra amperage…
Nothing else is changed. My next step would be to attempt to desolder it off the board and try it free of my circuit. Hard to desolder it off given the number of pins. Wish I had my photon to try another part…
I’m open to suggestions.
Regards to all,