This morning I tried updating the firmware on the Keyboardio Model 01, but it failed, both the Arduino IDE and the Chrysalis GUI tool. But avrdude on the command line worked.

@emacsen I was trying to update to a newer firmware so Chrysalis will work with the keyboard and let me tweak the layout. But that failed. Then Aruino IDE failed. Then the keyboard wouldn't work at all.

But avrdude put the factory firmware back on the keyboard, and it works again.

Need to figure out the Chrysalis and Arduino IDE problem later, after work.

Oh, an learn to touch type again.

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Lars and friends