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

Small 3-wheel ROBOT with PIC16F84 brain & InfraRed eyes
By: TJACO'S DESIGN GRAVEYARD

Page: 1-2-3-4-Home

General description

Cerberes is a small three wheel robot that avoids obstacles which it senses with its active infrared sensors.

Each rear wheel has its own motor, the single front wheel is not powered. The robot steers "like a tank" by rotating the rear wheels in opposite direction.

The sensors are built with infrared LEDs which are running at 36kHz and two 36 kHz remote control receiver modules.
When the 36 kHz infrared light from the LEDs is reflected by an object, one of the receiver modules will be triggered, and the PIC16F84 µController will steer the ROBOT away from the objects by reversing one of the motors.

Mechanics

Two electric toy ducks were sacrificed for this project.
The motors, axes and axe-holders from the toy ducks are glued on a piece of circuit board which acts as a base plate.
The rotation speed of the motors is reduced by the "worm-wheel" of the motor axes which drive the cogs of the wheel axes.