Here we will show a basic circuit and then talk about the two main types- the serial and the parallel circuit and why they are important.

We will talk a little bit about the types of wiring with the gauges and the twisted strand versus the sold and we will touch on the colors used in resistors.

We will show a few testing devices that can let you check for continuous flow of electricity thru a circuit in case something wasn’t working.

We will stress the difference between low power batteries or DC direct current and the type of power that you must plug into the wall or AC alternating current.

This sample 1997 video will soon be replaced with a new video explaining circuits

Most robots under a few feet in height will be powered by batteries. Your average toy has a handful of simple 1.5 volt batteries and you usually can’t get hurt too badly if you screw something up when you touch things inside. But yes there is a chance that bad wiring could cause a short and cause smoke and possibly a fire so you must always be on guard.

Large robots are usually heavy because they have larger arms and legs and need more powerful servos motors to get the power or torque to move the arms so then you would be talking about using more powerful lithium ion batteries or the newer type called LiPo or perhaps you would have to plug the robot into the house AC current.