How to charge a dead battery for the decoy device

When not used for long periods, the batteries should be disconnected inside the decoy to prevent full discharging, because if  the battery pack voltage falls below 1.5 V, the charger IC board will not permit charging.  However, here are some steps to “resuscitate” a dead battery pack.    Warning: you will need a 12 V power supply with alligator clips … Read More

Inputing external audio into TadPro, part 1

Attempt to add a 0.25 V pk-pk 1 kHz signal into GoPro successful.  Oscilliscope gets double the programmed signal amplitude-an effect of impedance mismatch, if I recall.