Let's Make Robots!

light sensor

Light Following Robot without using microcontroller. This wheeled robot does not avoid collision. It runs towards the light or just brighter areas.
The gear motor wheels, multi-directional wheel and the plastic sheet. I cut out 6 x 13 cm plastic for base. Glued the wheels to make the body and connected the … Read more

Trying to use a light sensor to control a stepper motor

So this code finally works, how do i change it from a light sensor to infrared sensor?

int dirPin = 8;

int stepperPin = 7;


void setup() {


  pinMode(dirPin, OUTPUT);

  pinMode(stepperPin, OUTPUT);

  pinMode(A0, INPUT);


void step(boolean dir,int steps){



  for(int i=0;i<steps;i++)


    digitalWrite(stepperPin, HIGH);


Draws interesting patterns using light sensitive behavior.
Using a
This robot is named for the main character in the song "Baby Brother" by the White Stripes, although I have yet to get it to crawl on the ceiling, swim underwater, … Read more
Avoiding obstacles, chasing light
Using a
Inspired by many other mouse bots I want to build my own one. Some parts are already collected and ready to being used. The bot should follow the light, detecting … Read more

Dust sensor


this is my first post. 

Arduino and TSL230R ic light sensor


Found this great article(via the sparkfun site) on using a tsl230r light sensor with an arduino.

The guy actaully uses  a slick way to measure the pulses. This could be useful for other projects as well. 


As a side, the light sensor mentioned can be picked up at local radio shacks, for those of us that have them around. I think they are just a couple bux. Very worth getting.