Published on August 26, 2017
Bow Drill Torch enhanced version.
5.1V zener diode, 5.5V 1F super capacitor, 100ohm resistor, switch added
Bow drill torch :
Bow Drill Torch enhanced version.
5.1V zener diode, 5.5V 1F super capacitor, 100ohm resistor, switch added
Bow drill torch :