PCB Presentation
Group 6 – String Us Up!Matthew Barton
Clifford RisleyPatrick Nice
Seth “Schematic” George
Self Tuning Guitar Packing Limits
• Electronics mounted inside guitar body• Room for 2” x 4” circuit board• 1.6” clearance inside guitar body
Top of Guitar
Bottom of Guitar
Power Supply
• Voltage Requirements– 5 Volts for A/D Logic– 3.3 Volts for Digital Logic– 4-6 Volts for Motors
• Power Supply– 8 AAA batteries producing 12V– ‘MC78M05’ regulator producing super-clean 5V– ‘NCV4274’ regulator producing 3.3V– ‘BD9702’ Switch mode regulator for 6V motor power
12V to 6V Regulator
12V to 5.0V and 3.3V Regulators
Microcontroller
Microcontroller, Reset Switch, Crystal
Audio Codec
Audio Codec, Crystal,
Input Lines (w/Resistance)
Bluetooth (w/ LEDs)
Headers, Power MOSFET, Dimmer
Total Layout
Basic Routing
Final Touches
• Heavy Traces for Power• Check de-coupling capacitors
