Technology

Solar Powered Jack-O-Lantern

Solar Powered Jack-O-Lantern

Pcapelo has a pretty simple and easy way to make solar powered jack-o-laterns, he writes – “Lately I have had much interest in working with solar cells, because of this I initiated a project, and to be able to test it, I decided to create this lantern with a pumpkin. Solar energy always fascinated me […]

Make your own ringtones

Make your own ringtones

This site has a pretty simple interface for making your own ringtones – as always, Maker beware, I’m not sure if they store/keep your phone # or whatever… check out our related links for other ways to get and make free ringtones too… Link. Related: DIY ringtone projects – Link. Rington archives @ MAKE – […]

Relay charging project

Relay charging project

Here’s a pretty interesting way to charge a lot of batteries with just one charger, Kalikast writes – “The following pages describe using relays with a high-current adjustable 13.5/15V power supply to automatically charge EV batteries one at a time, instead of concurrently in series. It will only work if you are not in a […]

BEAM robot – flashing eyes

BEAM robot – flashing eyes

Antics writes – “BEAM Art often features flashing LEDs. Here is a simple circuit borrowed from BEAM to flash a couple of LEDs. This is a modified version of Ben Hitchcock’s BEAM cricket. Pictured is the ‘flashing eyes’ part of the circuit. Unfortunately his site is gone and with it the original schematic. I backed […]