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Chase BannaNathan CorwinRobert Scanlon
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Problem
Learning to play the guitar can be a very time consuming and frustrating experience.
Without hands-on help or private lessons, many people quit before mastering the basic building blocks of the instrument – chord progression.
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Objectives
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Challenges
Programming PIC assembly
Working with surface mount integrated circuits
Touch sensor integrated circuits – clocking and Advanced Key Suppression
Designing and fabricating printed circuit boards
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PIC Programming
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Surface Mount Integrated Circuits
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Touch Sensor / Clocking
Source: http://www.qprox.com/downloads/datasheets/qt160_107.pdf
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Touch Sensors
6 completely independent touch circuits
Projects proximity fields through any dielectric
Adjustable sensitivity Adjacent Key
Suppression Auto calibrating with
adjustable timeout
Source: http://www.qprox.com/downloads/datasheets/qt160_107.pdf
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PCB Design
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Advanced Key Suppression
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PCB Fabrication
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PCB Fabrication
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PCB Fabrication
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Parts
4 PIC16F690 Microcontrollers 1 PIC16F777 Microcontroller 4 QT160 touch sensor integrated
circuits 74LS00 LEDs, 7 segment display, buttons,
capacitors, resistors PCB
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Expenses
2 double-sided PCBs $30Etchant $18Radio Shack PCB kit $18PIC microcontrollers FreePICKit2 $5010 QT1080s $306 QT160s $30Passive components $30Soldering Kit and supplies $40Total $246
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Timeline
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Questions/Comments?