Hi Sparkfun Forum Folks:
… recently purchased a pair of Sparkfun SAMD21 Pro RF (915MHz) boards in an initial foray into LoRa communications. I’ve soldered three inch wire antennae on both.
One boots up, accepts Arduino code, blinks, sends out serialUSB strings, holds time in the real time clock, etc.
The other? … pretty much unresponsive. There is a short blue flash (I think it is the “PWR” light emitting diode) when I connect the board to my laptop using the USB cable. But, other than that, is it non-responsive. I attempted to rapidly double tap the reset button and made sure that the power switch was turned on. After that? … no idea what to try next (besides ordering another board, which I have done).
I’m open to ideas.
Take care,
Matt
Boulder, CO
