This valentines we made this wooden Harp and used Laser and Light Dependent Resistors (LDR's) to play music. I will not be showing you how to make the wooden structure, but you can find the images with exact dimensions if you want to use them. I have used the code of Piano Stairs which I found in this instructable

Here is the list of items that you will require

1. Wooden structure of the harp

2. 12 - 3mm red/green laser dots

3. 5V power supply for the Laser

4. A Tah board (you can use any Arduino as well)

5. 12 - LDR and 12 -1K Resistors

6. A Raspberry Pi

7. Set of speakers

8. Play Dough (yay!!!)

9. Tools - soldering gun, scissors, wires, Tape, Glue gun, and prototyping circuit board.

Step 1: Now go make your Harp

Use can use the above drawing to create your own harp


<p>This is great! I love the video of it in action! Do you think that there is any way to make this easier to play a tune on it?</p>
<p>you can change the .wav files in the sounds folder to whatever pleases you. Optionally you can add a smoke machine so that you can see the laser beams and then play the tune that you know the notes to.</p>

About This Instructable




Bio: We are group of engineers who love to work on new ideas. We recently crowd sourced Tah a development board based on the Arduino.
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