Dc Motors

How To : DC Versus AC and the Diode

Direct current (DC) by definition flows in one direction. Alternating current (AC), on the other hand, periodically changes direction, or reverses polarity. It is indeed possible for a portion of a circuit that is normally DC to periodically change direction, or reverse polari ...more

How To : Build a hamster wheel to power your PC

Systm is the Do It Yourself show designed for the common geek who wants to quickly and easily learn how to dive into the latest and hottest tech projects. We will help you avoid pitfalls and get your project up and running fast. Search Systm on WonderHowTo for more DIY episod ...more

How To : Measure the Drive Current.

There is thousands of motor driver, do you find an easy way to measure the drive current? That is what this motor shield do. The drive chip is L298N. The following steps is how to control two DC motors and how to measure the drive current. With it, you will make your control s ...more

Robot Basics : Using an H Bridge to Move Your Bot Backwards

I love robots. They have the potential to evolve into Asimovian destroyers of the human species, but have only just mastered the art of cleaning my rug. They have an ever increasing cool factor and a growing number of cheap and simple components that let the hobby roboticist r ...more

How To : Troubleshoot a heater blower motor

Basic instructions on how to troubleshoot the heater blower motor of a Saturn S-series. The heater blower motor is located behind the glove compartment of your vehicle. Disconnect the negative and positive power supply. (The black wire is usually the negative.) Using a multime ...more

How To : Make a somersaulting robot

In this tutorial, we learn how to make a somersaulting robot. You will need: a gear box, 1.5 v DC motor, battery holder for AA, and a few gem clips. First, glue the gear box onto the battery holder and then glue the motor shaft in. Next, glue the gem clip on the pistons of the ...more

How To : Build a simple carboard magnet generator

Build this ultra-simple AC electric generator from magnets, wire, and cardboard. (And a big nail!) Light a small lightbulb, or flash a red LED. This demonstrates how generators work. Now if you want a more useful device, use a small DC motor as a generator, since it has much ...more

Understanding Electricity : Nikola Tesla

Nikola Tesla In my opinion, one of the most neglected inventors of all time. The names Edison and Marconi come to mind as familiar, but Tesla? Most think of a car. Few know that Tesla is responsible for alternating current, florescent lights, radar, remote control, generators ...more

How To : Make an Arduino Shield

Two years ago, driven by a good friend of mine i decided to give it a try on timelapse photography. I had a DSLR camera but didn't had an intervalometer, so i assembled a small electronic circuit on top of an Arduino Uno, made some basic code and did my first timelapse movie. ...more

How To : Build a Deadly Motion-Activated Airsoft Turret Gun

It's tough out there on the battlefield, especially when your stuck in the trenches and your comrades are dropping like flies. There's no hope. At least, until the next airsoft battle. So, enlist the help of a little unmanned airsoft artillery with this DIY motion-activated a ...more

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