Hi all !
That was my first robot, a few months ago. I wanted to start from scratch, so no micro-controller here !
It is a simple photophile robot, but it was a way to discover new fields to me like :
- electronic basis
- principle of gear motor reduction
- building a simple chassis
- making a PCB of me own
The principle
First of all, I got inspired and guided by a french book named "Je construis mon premier robot mobile" by Frédéric Giamarchi.
2 photoresistors mesure the light from 2 different directions (front/left and front/right), 2 comparators (LM393) compare the tension of the 2 photoresistors and activate (or not) one motor. A variable resistor allows to compensate the difference between the photoresistors.
Gear motor reduction prototype
Final gear motor reduction
Electronic prototype
The PCB finished and perforated
The robot head
View from below
The finished robot
The reduction happened to be a bit to strong, so the the robot was quite slow.
Looking for light
- Actuators / output devices: Autonomous
- Power source: 2 AA cells
- Sensors / input devices: Photoresistors
- Target environment: indoor flat surfaces
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/this-little-dude-likes-light
