Electricity & Electronics Project Ideas

Is this connected to that? Use a homemade electronic tester to find out if electricity can flow between two objects.
What do lamps, computers, televisions, printers, and kitchen appliances all have in common? They all need electricity to work. In order for electricity to provide power to these devices, it has to flow into and out of them. In this electronics science fair project, you will make your own simple circuit tester and use it to study how electricity flows through a lamp. Read more

The Speed of Light: Explore Solar Energy with a Supercapacitor Car Motor!
Solar cells are devices that can be used as a source of power when there is light shining on them, but they stop producing energy when they are not in the light. One way to store the solar energy for later use is to use a solar cell to charge something called a capacitor. The capacitor stores the energy as an electric field, which can be tapped into at any time, in or out of light. In this electronics science project, you will use parts of a… Read more

Build Your Own Crystal Radio
Here's a science fair project that shows you how to build your own radio receiver! You'll learn the basic circuit elements required for receiving radio signals, and you'll be able to listen to AM radio broadcasts with something you made yourself. A nice feature of this project is that you can make it as easy or as advanced as you want. Read more

Conductance as a Water Quality Measurement
Did you know that firefighters never spray water on an electrical fire? That's because ordinary tap water conducts electricity. This project will show you how to measure the conductance of water, and how to relate your measurements to water quality. Read more

Cool Junctions
Everyone is familiar with the idea that electric current passing through devices can heat them up. Most of us have used appliances like electric stoves, hair dryers, and toasters that are made specifically for heating. We've also noticed that things that run on electricity get warm when the current is turned on. Have you ever turned this relationship around and wondered if it is possible to use heat to produce current? Did you ever wonder if… Read more