Fun circuit that works great!
For Multi-LED Joule Thief.
Such a great idea for a circuit and the size being the same as a single battery is perfect. Love that it works using only 3 external components. The 17 LEDs are very bright which is surprising given that the battery powering it would typically be thrown away. The 3D-printed power switch is also very clever and a wonderful addition. I bought two and placed them on the nightstands on each side of the bed and could easily buy a bunch more and leave them around the house for when I need them. Excellent product!
