I decided to do this project because I wanted a small but vary bright flashlight, so that I could use to use up all the old smoke detector 9V batterys. I change them every New year so I have a good supply of half dead batterys. This is what I came up with 3 white LEDs a chunk of pc board and a top to a 9V battery and some hot glue and some solder.





Expert Council Q&A – Epi-3770
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Today on The Survival Podcast the expert council answers your questions
politics, foraging, dogs, red light therapy, home improvement, shotguns,
pistol cal...
1 hour ago