Xmas Mailbag SPOILERS: Mand Labs electronics learning kit: (yes, 27 minutes of it) 27:08 Petzl climbing harness 33:20 RC2014 home brew DIY Z80 computer kit on Tindie 39:00 Custom test leads 40:40 Aircraft 121.5MHz emergency beacon and altitude sensor teardown 51:30 Monero miner, and some Linux GPL hate! EPIRB Teardown: https://www.youtube.com/watch?v=QVAQONKyMv8 Petzl harness gear loop ...