Laser Harp Project

Project Index

Part I. Cover Page……………………………………………………………………...1

Part II. Project Index …………………………………………………………………..2

Part III. Laser Harp (Framed) Description…..…………………………………………3

Part IV. Laser Harp (Framed) Detailed Description…………………………………...6

Part V. Schematics

A. Laser Harp Schematics……………………………………………………12

B. Power Distribution………………………………………………………...13

C. NightFire Power Supply Kits……………………………………………...14

Part VI. Photographs

A. Laser Beam Detector Circuit……………………………………………...15

B. Laser Modules & Sharp GP2Y0A21YK IR range sensors………………..16

C. Sharp GP2Y0A21YK IR Sensor Filter Circuits…………………………..16

D. Dual Power Supply………………………………………………………..17

E. Arduino Communications Interconnections………………………………18

F. Laser Harp (framed)……………………………………………………….19

Part VII. MS Project Reports

A. MS Project: Task List…………………………………………………….20

B. MS Project: Network Diagram (formerly known as Pert Chart)…………21

C. MS Project: Gantt Chart…..…………………………..……………….…22

Part VIII. Parts List…………………………………………………………..……….24

Part IX. Source Code ……………………………………………………..………….26

Part X. Bibliography………………………………………………………………….29

Part III. Laser Harp (Framed) Description

The basic premise behind the “Laser Harp (Framed)”, hereafter referred to as “Laser Harp”, describe here comes from a Mr. Stephen Hobley as outlined in a MakeProjects.com online article. The idea behind this Laser Harp is that in breaking the beam path of one or multiple lasers we generate MIDI signal from the Arduino Uno to MIDI software located on a laptop. The MIDI software in turn generates a musical note that is sent to the laptops attached speaker(s). The Laser Harp also incorporates IR range sensors, which operate coincident with the breaking of a laser beam or beams. The function of the IR sensors are to modify the pitch of the MIDI signal generated by the Arduino dependent upon the range of a detected object (namely a human hand) in front of the sensor.

This particular Laser Harp’s...