QP mis-packaged ICs with opaque epoxy, OK for Sulu but bad for localization
MEMS contact sensing looking good so far but devices were dirty and results were inconclusive. Pre-charging output to high and waiting several seconds maintains a digital high on the GPIO input buffer. Would be good to test for how long that charge lasts (data tops out at ~3 s wait time).
Good to test what the threshold voltage of the GPIO drivers is too.