How about a easy and simple tutorial on how to make a sort of security sensor using laser and a light dependent resistor? It’s just as simple as this, the LDR reacts when it gets less light than the laser-dot in the…
Made a followup to my light tracker, except this one can go up and down. So it follows light in more directions than the other ones. [youtube=http://www.youtube.com/watch?v=0Fw6ausjl9o&w=425&h=344] Made of some cheap plastic-foam, wont last forever but long enough for me…
[youtube=http://www.youtube.com/watch?v=iEhX27ahreI&w=480&h=385] This is how to make a simple light tracker/follower with the Arduino. The components you need apart from the Arduino is: 2x Photoresistors: “PHOTOCELL2 Miniature Photocell”. 2x 470 Ohms resistors. 1x Servo. And of course some wires, and a…