Project 26 Human Body Piano

1. Description

The analog piano includes a development board and an ultrasonic sensor. It enables to play different tones by detecting the position of your fingers. Thus, this module is able to stimulate a piano to perform music and songs.

2. Flow Chart

3. Wiring Diagram

4. Test Code

Assign the distance value to item, and the played tones vary from distance. Seven tones are included: Do，Re，Mi，Fa，So，La，Si.

5. Test Result

Connect the wirings and upload the code.

• Play Do when the distance is less than 10.

• Play Re when the distance is within 10~20.

• Play Mi when the distance is within 20~30.

• Play Fa when the distance is within 30~40.

• Play So when the distance is within 40~50.

• Play La when the distance is within 50~60.

• Play Si when the distance is within 60~70.