Modifying an old light with LED tape.
30:00
Using salvaged lithium cells to power LEDs directly. (with protection test)
49:52
Dangerous DIY Krampus LED foliage lamp.
29:03
Fixing a faulty USB power supply.
43:05
Scary work incidents and other answers (with more LEDs.)
27:56
Solder testing (and candy).
38:21
USB to PIR to LED-string interface PCB.
36:37
JUGEE battery teardown full size video.
16:33