You’re looking at ~24 hours of continuous AVR flashing compressed down into 6 seconds.
While I won’t be releasing the connecting PCB just yet (i’m still beating down a few issues and refining the BOM), I thought it would be good to supply the scripts I used to do the actual time lapse since it was non-obvious from a “oh dear, the contest entry is due in <48 hours isn’t it..” point of view.
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