Laser Harp

Weekly Log

Laser_Harp_Weekly_Log

Overview

Although instruments have come a long way from their origins, they still have room to grow. Inspired by the transition from acoustic to electronic instruments, the laser harp strives to introduce a new way of experiencing music. With the laser harp, one would be able to enjoy musical scales by touching rays of light. Since the harp will have different keys and scales, it is important that the system's programming is properly carried out so the user can easily operate the instrument. Moreover, the sensors must be properly installed and synced with the disturbance of the lasers' trajectories for the project to be successful.

Team Members

• Taylor Howard
• Jennifer Fleites
• Yoojin Kim
• TA: Chance Bayles
• Instructor: Jim Feher

Objectives

• Learn how to use Arduino and MIDI.
• Build a circuit connedting the laser diodes to the Arduino.
• Determine which notes or sounds are feasible based on options available on MIDI.
• Create code or adapt code from the reference source to work the Arduino microcontroller.
• Build a frame for the harp through woodworking or 3D printing and assemble the parts.

Challenges

Software

• Controlling Midi system with Arduino
• Writing and understanding code that is executed in the different cases that occur when a laser is tripped

Hardware

• Reliably alligning lasers to photoresistors
• 3d printing a case that is reasonablly sized or building one using other methods that is consistent and accurately sized
• Cord management

Materials

Supplied

• Switch
• Wires
• Mulab
• 4.7 kOhm resistor
• 220 Ohm resistor

Purchased

• [Lasers] - $5.48
• Photoresistors - $9.55
• Arduino Proto Shield - $11.99
• Midi Interface - $32.39
• Midi Cable - $4.99
• Pin Headers - $5.48
• Din Connector - $9.23
• Power Supply - $7.90

(Total Shipping Cost)

•  ??

TOTAL:

References

https://www.instructables.com/id/Arduino-Laser-Harp-1/

https://www.instructables.com/id/Quick-Arduino-MIDI-Laser-Harp/