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paper_bits:pb702_midi_synth [2019/11/01 09:34] admin |
paper_bits:pb702_midi_synth [2020/03/20 16:44] admin [Software] |
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| ===== PB702 MIDI Synthesizer ===== | ===== PB702 MIDI Synthesizer ===== | ||
| - | The MIDI Synthesizer gives the possiblility to connect your Paper Bits to your Keyboard. It is polyphonic up to six notes and has three different waveforms: square, triangle and sine.\\ | + | The MIDI Synthesizer gives the possibility to connect your Paper Bits to a Midi Keyboard like the[[sound_boards:midi_keyboard|MIDI Keyboard]]. It is polyphonic up to six notes and has three different waveforms: square, triangle and sine.\\ |
| - | It's basicaly an Arduino klone running a small program based on the wonderfull [[http://sensorium.github.io/Mozzi/|Mozzi]] librarie.\\ | + | It's basically an Arduino clone running a small program based on the wonderful [[http://sensorium.github.io/Mozzi/|Mozzi]] library.\\ |
| For burning the bootloader look here:\\ | For burning the bootloader look here:\\ | ||
| Line 25: | Line 25: | ||
| * 1x 3.3 KOhm | * 1x 3.3 KOhm | ||
| * 1x 3.9 KOhm | * 1x 3.9 KOhm | ||
| - | * 1x 8.2 KOhm | + | * 2x 8.2 KOhm |
| * 1x 10 KOhm | * 1x 10 KOhm | ||
| - | * 1x 47 KOhm | + | * 2x 47 KOhm |
| * 1x 100 KOhm | * 1x 100 KOhm | ||
| * 1x 220 KOhm | * 1x 220 KOhm | ||
| Line 34: | Line 34: | ||
| * 2x 22 pF | * 2x 22 pF | ||
| * 2x 1 nF | * 2x 1 nF | ||
| + | * 1x 4.7 nF | ||
| * 3x 100 nF | * 3x 100 nF | ||
| * 1x 150 nF | * 1x 150 nF | ||
| Line 59: | Line 60: | ||
| ---- | ---- | ||
| ==== Software ==== | ==== Software ==== | ||
| + | |||
| + | The synthesizer program is based on the [[https://sensorium.github.io/Mozzi/|Mozzi Library]], have a look at the [[https://sensorium.github.io/Mozzi/doc/html/index.html|Mozzi Dokumentation]] to learn more about it.\\ | ||
| + | For the installation download the library: [[https://sensorium.github.io/Mozzi/download/]]\\ | ||
| + | And install ZIP library like described here: [[https://www.arduino.cc/en/Guide/Libraries#toc4]]\\ | ||
| + | |||
| + | Unfortunately there is a glitch in Mozzi. Arduino change he compiler so the uploaded code is smaller now, but also a timing problem appeared. To fix the glitch follow these steps:\\ | ||
| + | **In: arduino-x.x.x\hardware\arduino\avr\platform.txt change -O2 to -Os.**\\ | ||
| + | [[https://sensorium.github.io/Mozzi/fixes/updates/howto-for-arduino-1-dot-6-11/]]\\ | ||
| + | Here is an explanation about the problem. | ||
| + | [[https://www.instructables.com/id/Arduino-IDE-16x-compiler-optimisations-faster-code/]]\\ | ||
| + | \\ | ||
| + | |||
| + | Code:\\ | ||
| {{ :paper_bits:mozzi_midi_poli_12_1sec_limit.zip |}}\\ | {{ :paper_bits:mozzi_midi_poli_12_1sec_limit.zip |}}\\ | ||
| ---- | ---- | ||