Hacked Gadgets Forum

April 12, 2006

What to do with Blue Balls

at 2:24 am. Filed under DIY Hacks, Electronic Hacks, Funny Hacks

I started by drilling three holes in the cap. One for the 9 Volt power wires and two for each lead of the photo-cell. A bit of hot glue held the photo-cell and battery leads in place (gotta love hot glue).
All of the leads were simply soldered together to make the circuit. Most connections were too close to use any heat shrink but a few well placed drops of hot glue should keep things in place 🙂 .
The unit is done and ready for testing. First time I powered it up nothing happened… I had the LED in backwards. I guess I wasn’t following my own rule of check twice and solder once. Oh well, easy fix.

I made the unit so that the LED would sit near the bottom of the bottle neck. This seems to be a spot that allows the LED to light nicely.