This is an old revision of the document!
Table of Contents
PB702 MIDI Synthesizer
The MIDI Synthesizer gives the possibility to connect your Paper Bits to a Midi Keyboard like theMIDI Keyboard. It is polyphonic up to six notes and has three different waveforms: square, triangle and sine.
It's basically an Arduino clone running a small program based on the wonderful Mozzi library.
For burning the bootloader look here:
AVR & Bootloader
For uploading the program one needs an USB to Serial adapter or an Arduino:
The Arduino as a Serial Adapter
Paper PCB
Parts
- Resistors:
- 1x 220 Ohm
- 1x 330 Ohm
- 2x 470 Ohm
- 2x 1 KOhm
- 2x 1.2 KOhm
- 1x 2 KOhm
- 1x 3.3 KOhm
- 1x 3.9 KOhm
- 1x 8.2 KOhm
- 1x 10 KOhm
- 1x 47 KOhm
- 1x 100 KOhm
- 1x 220 KOhm
- 1x 1 MOhm
- Capacitors:
- 2x 22 pF
- 2x 1 nF
- 3x 100 nF
- 1x 150 nF
- Electrolytic Capacitors:
- 1x 1 µF
- 2x 10 µF
- Semiconductors:
- Atmega 328P-PU
- OpAmp MCP 6002
- Optocoupler 6N138
- Cristal
- 1x 16 MHz
- Diodes
- 1x 1N4148
- 1x LED
- Mechanical:
- 1x IC socket, 28 pin
- 2x IC socket, 8 pin
- 1x pin strip 1x14pin
- 2x pin header, female 90° 1×3, 1×2
- 2x pin header, male 90° 1×3, 1×2
- 2x push button
- 3x jumpers