This charger will charge all different types of AA ,C, D ,9 volt batteries depending on the battery holder that you select for the project, it’s even capable of charging alkaline batteries depending upon the load resistor (light bulb) in the circuit. Check it out HERE
Make RGB LEDs work in ordinary solar lights. If you put an RGB color changing LED into an ordinary solar light it tends to just stay red and not change color. Here’s why and how to make it work.
Arduino Game Project: Tic Tac Toe Game. In this video we are going to build an Arduino Tic Tac Toe game. A simple game like Tic Tac Toe is is a great introduction to game programming and Artificial Intelligence.
Software Defined Radio is a very cheap $20 USB dongle that can be used as a computer based radio scanner for receiving radio signals in your area. Depending on the model, it can receive frequencies from 500 kHz up to 2 GHz. Software Defined Radio software is community developed and free of charge.
Getting the most out of your Raspberry Pi? Running a project that just needs something more? Odd as it may seem Linux might be the problem. Why not consider a non-Linux operating system? Several have been released, or adapted, for use on the Raspberry Pi.
Do it yourself battery desulfator. Its a very simple old school capacitive battery charger made from scrap parts, but if you have little respect for electricity, or batteries for that matter, it’s best you move along to another project.