Calendar

Week Monday Tuesday Wednesday Thursday Friday
8/22
First class meeting 4:00p - 5:50p ECEB 3002
8/29
Second class meeting 4:00p - 5:50p 3002 ECEB
CAD assignment due 11:59p
9/5
Third class meeting 4:00p - 5:50p 3002 ECEB
Project approval due 4:45p
9/12
First team meetings with TAs 4:00p - 5:50p 3081 ECEB
Proposals due 11:59p
Initial Conversation With Machine Shop (required if using the shop) due 4:00p ECEB 1047
9/19
9/26
Design Document Check
Fang: 2072
Design Document Check
Fliflet: 2072
Design Document Check
Gruev: 2072
Design Document Check
Fang: 2072
Design Document Check
Gruev: 2072
Design Document due 11:59p
10/3
Design Review 8:00a - 6:00p With Instructor and TAs
Design Review
Fang: 2072
Design Review
Gruev: 2074
Design Review
Fliflet: 3032
Design Review 8:00a - 4:00p With Instructor and TAs
PCB Board Reviews 4:00p - 6:00p
Design Review
Gruev: 2074
Design Review
Fliflet: 3032
Design Review 8:00a - 6:00p With Instructor and TAs
Design Review
Fang: 2072
Design Review
Gruev: 2074
10/10
Last day for revisions to the machine shop due 1048 ECEB
10/17
10/24
10/31
11/7
11/14
Mock demo During weekly TA mtg
Mock demo During weekly TA mtg
Mock demo During weekly TA mtg
Mock demo During weekly TA mtg
Mock demo During weekly TA mtg
11/21
Fall Break
Fall Break
Fall Break
Fall Break
Fall Break
11/28
Final Demo With Instructor and TAs
Demonstration
Fang: 2070
Demonstration
Fliflet: 2070
Demonstration
Gruev: 2070
Final Demo With Instructor and TAs
Demonstration
Fang: 2070
Demonstration
Fliflet: 2070
Demonstration
Gruev: 2070
Final Demo With Instructor and TAs
Demonstration
Fang: 2070
Demonstration
Fliflet: 2070
Demonstration
Gruev: 2070
Mock Presentation With Comm and ECE TAs
Mock Presentation
2072
Mock Presentation
2074
Mock Presentation With Comm and ECE TAs
Mock Presentation
2072
Mock Presentation
2074
12/5
Final Presentation With instructor and TAs
Presentation
Fliflet: 2070
Presentation
Fang: 2072
Presentation
Gruev: 2074
Final Presentation With Instructor and TAs
Presentation
Fliflet: 2070
Presentation
Fang: 2072
Presentation
Gruev: 2074
Final papers due 11:59p
Lab checkout 3:00p - 4:30p With TA
Award Ceremony 4:30p - 5:30p ECEB 1002
Lab Notebook Due due 11:59p

Automatic Piano Tuner

Joseph Babbo, Colin Wallace, Riley Woodson

Automatic Piano Tuner

Featured Project

# Automatic Piano Tuner

Team Members:

- Colin Wallace (colinpw2)

- Riley Woodson (rileycw2)

- Joseph Babbo (jbabbo2)

# Problem

Piano tuning is a time-consuming and expensive process. An average piano tuning will cost in the $100 - $200 range and a piano will have to be retuned multiple times to maintain the correct pitch. Due to the strength required to alter the piano pegs it is also something that is difficult for the less physically able to accomplish.

# Solution

We hope to bring piano tuning to the masses by creating an easy to use product which will be able to automatically tune a piano by giving the key as input alongside playing the key to get the pitch differential and automatically turning the piano pegs until they reach the correct note.

# Solution Components

## Subsystem 1 - Motor Assembly

A standard tuning pin requires 8-14 nm of torque to successfully tune. We will thus need to create a motor assembly that is able to produce enough torque to rotate standard tuning pins.

## Subsystem 2 - Frequency Detector/Tuner

The device will use a microphone to gather audio measurements. Then a microprocessor processes the audio data to detect the pitch and determine the difference from the desired frequency. This can then generate instructions for the motor; direction to turn pegs and amount to turn it by.

## Subsystem 3 - User Interface/Display Panel

A small but intuitive display and button configuration can be used for this device. It will be required for the user to set the key being played using buttons on the device and reading the output of the display. As the device will tune by itself after hearing the tone, all that is required to display is the current key and octave. A couple of buttons will suffice to be able to cycle up and down keys and octaves.

## Subsystem 4 - Replaceable Battery/Power Supply

Every commercial product should use standard replaceable batteries, or provide a way for easy charging. As we want to develop a handheld device, so that the device doesn’t have to drag power wires into the piano, we will need a rechargeable battery pack.

# Criterion For Success

The aim of the Automatic Piano Tuner is to allow the user to automatically tune piano strings based on a key input alongside playing a note. We have several goals to help us meet this aim:

- Measure pitch accurately, test against known good pitches

- Motor generates enough torque to turn the pegs on a piano

- Tuner turns correctly depending on pitch

- Easy tuning of a piano by a single untrained person

Project Videos