Joule Thief LED Circuits
A Triple Channel Musicator - the TriM...
Musicator Jr - Mk 2
USB-powered Musicator
A Solar Powered Reading Light
QS's Blinkie Thingie
The "Reverse Joule Thief" Battery Charger
A Wearable Sound-to-light Display, Without a Microprocessor - the Musicator Junior.
RGB LED Color Sequencer - Without a Microprocessor
High Efficiency 9-volt LED Flashlight With Touch Control
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