74*245 Motor Driver

H-Bridge Driver

Simple PWM Gen.

Handy Method Measuring RPM

Measuring RPM via Photo reflector

Introduction to Robotic

DC, Stepper,and Servo Motor

Microcontroller Tutorial

Computer Interface
Tutorial
.............more links

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The Beetle Robot

The following article will show you how to build a simple robot, called "The Beetle Robot", created by Jerome Demers. It's great for beginners and easy to do.

This is the Beetle Robot v. 3 you are going to build:

Before starting, I suggest you to read the complete tutorials. This will greatly lower the chances of you making a mistake.

Tools Needed:
soldering iron ( here's a helpful tutorial on soldering )
electronic solder
diagonal cutter
Mini glue gun

Components for the robot
2x - small 1.5 Volts motors
2x - small paperclips
2x - big paperclips
2x - batteries AAA or AA
1x - battery holder AAA or AA
1x - 2 cm of heat shrink
1x - wooden pearl (for the caster)
1x - meter of electric wire
2x - Sub-mini lever SPDT switches

Here are the serial numbers of the components and tools from RadioShack .
Component Number
soldering iron 64-2184
electronic solder 64-006
diagonal cutter 64-2951
1.5 Volts motor 273-223
battery holder 270-398
SPDT switch 275-016

Most of the components can be bought for much cheaper at Digi-Key, Jameco, or similar. At Solarbotics you can find the dual AA battery holder and the Mabuchi motor. You can find these components at any good electronic store.

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