Order a Pcb

Custom Printed Circuit Boards (PCBs)

In this course, you will be creating and ordering a PCB to use in your project. The primary method for ordering PCBs is to order them through PCBWay. With the help of your TA, you can order a simple, 2-layer, 100mm x 100mm PCB through PCBWay at no cost to you. This PCB will simply be fabricated, as opposed to assembled, so a major portion of this class will be soldering and assembling the PCB you order. This means that you will need to source your components either through the course or other means. See the getting parts page for more details.

Alternatively, you can order a PCB from any outside vendor (including PCBWay) and pay for the cost of the board out of pocket. By paying for a PCB yourself, you are not required to meet the deadlines imposed by the course and can sometimes get your board more quickly.

In rare cases, some teams will be allowed to order PCBs through the Electronics Services Shop in ECEB. If you have need of special board layouts or require a PCB very early in the semester, please discuss this option with your TA as early as possible.

PCBway Orders Through the Course

Orders through PCBway can be submitted and paid for by the ECE department with the help of your TA. Orders will be uploaded to PCBway by your TA and paid for on the dates listed on the course calendar. Please note that the PCBway orders will not be manufactured or shipped until they are paid for so please be aware of the lag time between order submission and payment. In addition, your order must pass PCBway's audit before the payment date for your order to be processed. In order to help students pass audit more quickly, we have provided a DRC file that can be imported in to EagleCAD to verify that your board meets PCBway's capabilities. Passing the DRC does not guarantee that your board will pass audit but it does greatly increase the probability of that event.

Electronic Services Shop

Orders placed through the Electronic Services Shop will require TA approval so please discuss with your TA before contacting the Services Shop. The software most commonly used is EagleCAD. Contact a technician in the Electronic Services Shop with questions.

Please be aware of the PCB deadlines posted on the course calendar. If you are unable to meet these deadlines, you will not be able to order a PCB through the the Electronic Services Shop. You will still be able to order PCBs through third party vendors, just be aware that rushed orders can become expensive.

Commercial quality boards

The most commonly used programs for board layout are Eagle and Orcad Layout. The two software packages below allow a schematic to be drawn and translated into a board layout.

Once the board has been laid out, some companies will manufacture small quantities for a very reasonable price.

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