ECE 110/120 Honors Lab Section : Functional Auditory Robotics Therapy (FART)

Name	NetID	Section
David Shim	djshim2	ECE 120
Pratham Jain	pnj2	ECE 120

Statement of Purpose

The goal of this project is to build a robot which can be programmed to play 3 chords (G, C, D) on a guitar in a programmable sequence. The robot should be able to press down on the strings corresponding to the chord inputs and play a single, simple 4/4 strum pattern. Ideally, the robot can be used to play guitar while users sing along to the song of their choice, creating a fun and positive experience for the whole family.

Background Research

The strumming arm is pretty simple to engineer, the only mechanical parts being a servo motor which can be rotated through simple Arduino servo and delay commands. However, the string-press mechanism which determines the notes being strummed will be more difficult to engineer, even with only 3 chords present on the music menu. We plan to minimize as much changing in string-press fingerings as possible by changing only notes that must be changed to remain accurate to each chord's most basic form. The mechanism to press on the strings will be similar to pistons that push directly onto the strings.

Block Diagram / Flow Chart

System Overview

The Arduino Uno is used to power 2 servos and a stepper motor. One servo motor will be used to control the full-width strum of the strumming arm. The other servo motor will be used to lever the String-Press mechanism up and down onto the strings to press down for desired chords. The stepper motor is used to adjust the lateral direction of the String-Press mechanism, perpendicular to the direction of the strings, through the String-Press slider.

Parts

Parts	Quantity	Price	Vendor	Purpose	Link
Arduino Uno R3	1	$22.50	Honors Lab	Power/Run the FART	https://www.adafruit.com/product/4806
Servo Motor	2	$5.95 Each	Digi-Key	One for strumming, the other for pressing strings	https://www.digikey.com/en/products/detail/adafruit-industries-llc/2201/5154685?utm_adgroup=Motors%20-%20AC%2C%20DC&utm_source=google&utm_medium=cpc&utm_campaign=Shopping_Product_Motors%2C%20Solenoids%2C%20Driver%20Boards%2FModules_NEW&utm_term=&utm_content=Motors%20-%20AC%2C%20DC&gclid=Cj0KCQjwwNWKBhDAARIsAJ8HkhfKMId6UCL6GK1QZBHffXqU-I-qvwWb7--U8Gg64qBZNYhdse7XNWoaArNFEALw_wcB
Stepper Motor	1	$6.90	Digi-Key	Used to change the location of the arm across strings	https://www.digikey.com/en/products/detail/105990072/1597-1699-ND/9771829?itemSeq=378244003
Gear	1	$12.99	sparkfun	Used to control the String-Press slider	https://www.sparkfun.com/products/12140
Pencil	2	$0.01 Each	AnyPromo.com	Used to press on strings	https://www.anypromo.com/pens-writing/pencils/2-lead-pencil-with-white-eraser-p670587?calltrk=plas&glppc=2&s=1&color=E43_6F_6C_6F_72_5F_3A_5F_42_72_69_67_68_74_20_59_65_6C_6C_6F_77
balsa wood
Shipping Cost	N/A	$4.99 (First Class Mail)	Digi-Key

Possible Challenges

Building practical design for string-press mechanism within budget

Synchronization of strumming and string-press

References

List all references you used in your proposal. This is important, you do not want to be blamed for plagiarism. IEEE citation format is highly recommended. You can use citethisforme.com's IEEE citation generator to painlessly generate your references in this style.

Danilo, D., Alessio, D., Andrea, D. and Giuseppe, P., 2015. Robot Guitar - Arduino - Jessica. [video] Available at: <https://www.youtube.com/watch?v=DBqdnujBSpI> [Accessed 16 September 2021].

Final Report

47 FART Final Report.pdf

Video Demo