I had built one of these a year ago however the battery connection was broken and I had no way to reconnect it so I ended up just breaking the bottle and building a new one. The circuit is quite simple and the finished product makes a nifty night light.
Parts List:
- 1 SoBe glass bottle or other large glass container
- 1 LED of your color preference (try and buy superbright)
- 2 1000 Ohm resistors
- 1 9 volt battery
- 1 9 volt battery connector
- 1 NPN transistor (2N 4401)
- 1 Photo-Cell
Unfortunately my setup includes a normal LED and not a superbright one so my max light emission is very small. To produce more light I suggest using a superbright LED of any color and try playing with the resistor resistance values, I found this setup to produce the maximum amount of light for me.
heres a video of it in action!
SoBe night light video
and if you want to check out the site where I got all the info for this project (basically my template/helper site) you can check it out here:
hacked gadgets Blue Bawls automatic light
they have a bunch of cool videos, schematics and photos so check it out!
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