I’m experiencing some issues using a Boron with a custom PCB. I’m using D2 to toggle power to some peripherals and sensors. When I write D2 HIGH, the Particle resets. I suspected there was a problem with the PCB so I tested for short circuits, bad grounds, etc on my board and everything seems to check out. Without toggling D2, everything is good to go.
This is where things get a bit strange and super frustrating… I placed the Boron on a breadboard and pin-by-pin, I connected the boron to the custom board with jumpers. This solved the problem and toggling D2 no longer reset the Boron.
I thought maybe noise was interfering with the EN pin so I tried a 4.7K pull-up resistor. No luck. Also, the problem persists even when cellular is turned off.
I don’t have schematics available at the moment so I apologize for the lack of info.
Any high-order suggestions are certainly appreciated!