- See what parts are needed to build a flashlight
- Investigate build quality of cheap flashlights
things I'm looking for in flashlights.
I fiddled with it a bit and managed to get it working! Unfortunately it's very unreliable and doesn't work most of the time. I don't think there's anything wrong with the parts, just that the connections are no good. Probably the switch contacts - they have to be centred in the body of the flashlight to connect the LED module and battery carrier, and the don't look centred.