New 4 Note Laser Harp

This is a new prototype of my laser harp. I let the beams shine through a colloid.

Laser Harp With 3 "strings"

This is my laser harp. Just a prototype of a prototype.

Video will be added soon.

Laser Trip Wire With Speakers

The same thing but now when the laser is broken, an alarm goes off. 

Laser Trip Wire

So I made a laser trip wire for the Arduino.
I got the idea today since I went to the 99 Cents store and picked up 3 lasers.

Here are the pictures. When the laser sight is broken the LED turns on.

Darkness Meter

This is a Darkness Meter. No, not the kind that that gauges the morality of an individual (LOST). But the kind that measures the amount of light in the ambiance. It works the same way as the "LDR and Arduino" project, but it has 3 LED's and 3 thresholds. I'm uploading a video of it in the next hour.


**Update. Click here for video. 

LDR and Arduino

This is a practical use for an LDR. The LED on the arduino turns on when there is low light and turns off when there is plenty. This could be useful as a night light.

Press "Read More " To copy the code:

Arduino Light Dependant Resistor

The image above shows a Light Dependant Resistor. It functions very simply. I used it with the Arduino to measure the ammount of light in my room. I didn't know until today that I had so many spare components lying around. I'm interested in the things a LDR can do, I think I'll try to create the robot featured on this website. Now all I need is to find an inexpensive servo. :]