A pocket light from scrap partsGadget
Creative Commons Attribution Share Alike
Commercial use is allowed, you must attribute the creator, you may remix this work and the remixed work should be made available under this license.
I have designed this pocket light around some scrap parts: a primary Li-SOCl2 cell sized 14500, a white LED, a slider switch, a locking push button, and a few resistors and transistors.
The circuit in the schematic is a simple constant current source and the resistors are chosen such that the current can be set to about 10, 3, or 1mA; which, considering the infrequent use, will make the light run forever.
A FreeCAD design file is published here:
I also design on redbubble: https://www.redbubble.com/people/reintegration/shop
And I promote my RB designs on Pinterest: https://www.pinterest.com/reIntegration42
Issues are used to track todos, bugs or requests. To get started, you could create an issue.