The Smell of Molten Projects in the Morning

Ed Nisley's Blog: Shop notes, electronics, firmware, machinery, 3D printing, laser cuttery, and curiosities. Contents: 100% human thinking, 0% AI slop.

Astable Multivibrator LED

Having run out of dead CR123A lithium cells, I soldered up another holder to work through a handful of dead AA alkalines:

Astable Multivibrator LED Blinky - AA Alkaline mod
Astable Multivibrator LED Blinky – AA Alkaline mod

It’s amazing how much light comes from a single wearable LED powered by a dead battery in a dark room!

Stipulated: I should have 3D printed a CR123A cell adapter. Maybe next time …