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.





Filtering Feedback From Friends, Family & the Market – Epi-3699
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Today we’re going to look at something every builder, creator, or doer runs
into. Pushback from all directions: friends, family, customers, even total
stra...
15 hours ago