FailureBot Line Follower Robot

Robot preview:

Microcontroller ATMega8
Sensor: 5 pieces phototransistor
Motor: Lynxmotion motor
Programming language:

Download tutorial (mechanics, schematics, source code)

Build Line Follower Robot with AVR Microcontroller

Build your own line follower / line tracker robot…!

Microcontroller : Atmel ATMega8535
Sensor: 6 photodioda sensor
Motor driver : L298 dual driver (up to 1A of electric current)

Ping Parallax 28015 Application Sample

Download ping parallax ultrasonic distance sensor datasheet, schematic and program code sample:

Hexapod Robot Mechanism Construction

This tutorial will teach you how to make hexapod robot using 3 servo motors:

Download Hexapod Robot Tutorial:

Build Robotics Servo

This tutorial will teach you how to control servo motor using parallax device.

Basic AVR Microcontroller Tutorial

Most of robotics hobbies use AVR microcontroller for their robot’s chip. This microcontroller is cheap and easy to used.

Download the file here:

Fire Fighting Robot Tutorial

Many fire fighting robot competition in the world with diffrerent mission but have similiar field…
Here some useful reports of fire fighting robot project.:

Driving Stepper Motor

Stepper motor is very useful for some robots to make their high accuracy movement. How to drive or control your stepper motor? Use this tutorial as your guide….

General Theory of Stepper Motors

An ordinary DC motor will turn around and around as long as power is supplied. No intelligent circuitry is required to drive such a motor, unless you want to slow it down or reverse direction – just apply power and it spins. A stepper motor is very different. If you just feed it power, it will stay where it is. In order to make the motor move, you have to feed it a changing signal. This is best illustrated by thinking of a magnetic compass with electromagnets around it:

Figure 2.7.1 Motor Stepper

The drawing on the bottom shows power applied to the N electromagnet, drawing the compass toward it. On the right, power is instead applied to the E electromagnet, and the needle has rotated toward that side.

Figure 2.7.2. Basic Stepper Motor

Just four electromagnets would give coarse jumpy motion. Now

4 Legs Walking Robot Tutorial

Another robot project you can find here:

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Introduction
Once I made this robot to get some study points while I was studying at the Technical High school in Rijswijk, the Netherlands. I made this in my limited free time, that is why it took me about a year to finish the project. A lot of the used techniques where new, so the research took a lot of the time, but is also the reason why this project had great value to me.

Target
Before I started developing the robot I made a few targets:

C-52EVB Robot Controller

Introduction

One of my student has made a disgraceful robot that used two stepper motors and with a simple IR sensor. Yes, above picture is what I’m talking. Without battery carrying, a little bit torque of the stepper and misalignment of driving shaft, makes it crawling not walking, but first demo, showed quite impressive to me. He said he wrote a couple of program lines using C, his robot can track the black tape. I feel delighted his intention and endeavor. I thought, ” he borrowed me DS5000, expensive one, a soft uController with internal bootloader, why shouldn’t try with our learning board C-52 Evaluation Board instead”. Another one, told me the same day “I found the L293 Push/Pull Four Channel Driver at Ban-Moah, it costs 1.5 US$ “. I’ve been searching this chip for a year.

The MiniBoard, a Motorola 68HC11 Robot Controller board designed by Fred G. Martin, also uses this driver. The day after, I then decided to prepare the page describing how to use C-52 EVB as a robot controller board. I asked my student for competition, build yourselves robot that can track the black tape. Prize for the winner is 100 US$, with a bit condition that the winner must pay for a big party at Soi Jinda’s Somtum (Papaya Salad) shop. And one of the competitor is me. I thought the rule should be conceived roughly by students and technically by me. The picture on that day will put here soon.