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Make A Light Seeking And Obstacle Avoiding Robot

Make a light seeking and obstacle avoiding robot. via instructables

Picture of Light Seeking and Obstacle Avoiding Robot

The purpose of this project is to build an arduino robot that follows light and avoids possible obstacles in its way. It is based on an Arduino Uno microcontroller board and it uses Light Dependent Resistors to find the most bright light source while avoiding any obstacle on its way to the light source, using an Ultrasonic Distance Sensor.

The fun thing is that it has an old android smartphone on it and it broadcasts live onboard video to your computer screen. You can see what it can see.

Step 1: List of components and tools

Components
Arduino Uno board
Breadboard
2 x Continuous Rotation Servo
1 x Micro generic Servo
Ultrasonic Distance Sensor (HC-SR04 is cheap and reliable)
2 x Light Dependent Resistors
2 x 10kΩ resistors
2 x 330μF capacitors
1 x 100μF capacitor
Robot Chassis (i used the magician chassis, you can use whatever you like, even cardboard)
2 x plastic wheels
9V battery for the servos
4 x 1,5V batteries for the Arduino
Holders for the batteries
Hook up wires
Rubber bands
Screws
Zip ties
Several supports for the components
On/Off Switches (optional)
Old Android Smartphone (optional)

Tools

Screwdriver
Wire cutter
Duct tape (or electrical tape)
Soldering iron (optional)
Solder wick (optional)

Full tutorial


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