originally a board from Sparkfun that squeezed most of the Arduino Leonardo onto a board a little smaller than Arduino’s own Micro. The Pro Micro has an unusual ‘double-tap’ requirement when uploading ...

Right now you can only reprogram the Knobo’s Arduino-based firmware with an In-Circuit Serial Programmer to change what the inputs do, but [Gary] is currently working on configuration software ...

That includes other pin-change interrupts ... This library has been tested with an Arduino Uno (AtMega328p), EnviroDIY Mayfly (AtMega1284p), Adafruit Feather 32u4 (AtMega32u4, identical to Arduino ...

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This library uses the Serial Peripheral Interface (SPI) to accelerate the update of the AD9850 from 700µs in software serial to 90µs (54µs for the deltaphase ...