How 2.0: Digital Wall Harp

How to build a Digital Wall Harp.

Here is what you will need:

Epoxy
8-10 Infrared Sensors
MidiTron
22-24 Gauge Wire
MIDI to USB converter.
Two 4’-6’Aluminum U-channels.
Two 4’-6’2x4’s
Large SPST On/Off switch.
Wood screws.
Stepper Drill bit.
Small Zip ties.
Zip tie mounts
Wire butt connectors
Multimeter
9-volt 300mA power supply
Solderless breadboard
Box of jumper wires.

And here is the software you will need, music software from MidiTron and USB driver software.

Step 1

Test the infrared sensors. Snap the red, black and yellow wire in to the connector and attach it to the sensor. Place the wires from the sensors in to the corresponding channels of the breadboard, then using jumper wires, connect the MidiTron plus and minus to the corresponding vertical channels of your breadboard.

Step 2

Connect the MIDI to USB converter to your MidiTron and to your computer. Open the MidiTron program and set the inputs to digital end. Now run your hand over the sensors. You will know it is working if you see a little X appear on the boxes.

Step 3

Measure the location of the sensors on your U-channel, space them out evenly, then with your stepper drill bit, draw holes in to the U-channel for the attachment. Do this with the bottom channel as well.

Step 4

Using epoxy, glue each IR sensor in to place on the back of the U-channel. Use zip ties to tuck the wires away but leave them so they do not pull out of the IR sensors. Use your Multimeter to test the connection.

Step 5

Cut and strip your wires, so they reach the MidiTron. Leave slack so they do not pull out of the sensors. Now anchor your MidiTron to the wall. We hit ours under a tambourine. We hit the tambourine to turn the system On or Off. Infrared Sensors know exactly where your hands are and you can digitize any kind of music.

So now you can start composing your off the wall sensors.




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