While this is not exactly a hack or a fail, it definitely is an inspiring example on how to debug a faulty card. [Quinn] is one of the very few hobbyists out there that designed her own 6502 ...

Given an unknown PCBA with an ARM processor, odds are good that it will have either the standard 10 pin 0.05″ or 20 pin 0.1″ debug connector. This uncommon commonality is a boon for an ...