Unable to program a new Gemma v2 - dim red light

USB AVR Programmer and SPI interface. Adafruit's USBtinyISP.

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Re: Unable to program a new Gemma v2 - dim red light

Post by adafruit_support_rick »

So, I tried this. Never did it before.

Plugged into a wall charger, my Gemma just shows a dim red light. Plugged into a computer, it pulses brightly.

So, it needs a good USB connection before it will pulse. I'll see about updating the tutorial.

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