Using LEDs as mains indicator lights on 120V and 230V (live demos)
30:00
Using salvaged lithium cells to power LEDs directly. (with protection test)
23:35
High voltage LED tester with VERY clever circuitry (and hidden features)
20:16
How to Calculate the Correct Resistor for LEDs Light Emitting Diodes
13:11
Pocket floodlight teardown - with schematic
23:51
Hacking an extra trashy Poundland LED lamp (with schematic)
19:22
TESİSATÇILARIN 6 EV YAPIMI ALETİNİ KEŞFEDİN
23:33
LED Complete Basics for Beginners
24:39