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.





Monday Mayhem on The Survival Podcast – Episode-3895
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Monday Mayhem shows are a throwback to the roots of The Survival Podcast.
Fast riffs on many topics in real time. No deep presentations or digging
into t...
19 hours ago