/drumly

Drum synthesizer based on ARM Cortex M0 μ-controller.

Primary LanguageCMIT LicenseMIT

Drumly

Synthesize drum beat upon trigger from piezo sensor.

Parts Used

  1. 8 Ohm 1W speaker
  2. Audio amplifier http://www.ti.com/lit/ds/symlink/lm386.pdf
  3. https://os.mbed.com/platforms/FRDM-KL43Z/
  4. Electrolytic capacitors of values {0.1uF, 100uF, 220uF}
  5. Resistors {5kohm, 1Mohm}
  6. Piezoelectric sensor (35mm diameter)
  7. Jumper canbles/wires
  8. Breadboard (medium size would do)
  9. 9v DC voltage source

Circuit Diagram

TODO

  • Attach additinal sensors for variety
  • Synthesize drum beat for snare using few harmonics
  • Periodically interrupt for ADC readings - PIT

Acknowledgement

http://www.daycounter.com/Calculators/Sine-Generator-Calculator.phtml