ATmega UNI Programming Shield

Notes about prototyping small programming shield on ATmega UNI that works with Arduino ISP from examples.

Experimenting around an idea that "shields" doesn't have to be full-size, but could be used on (and over) pins used - clearly indicating which ones are being used.

KiCAD schematics+PCB are on GitHub.

See also ATmega-UNI post