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