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paper_bits:pb702_midi_synth [2019/11/01 09:36] admin [PB702 MIDI Synthesizer] |
paper_bits:pb702_midi_synth [2020/03/20 16:47] admin [Software] |
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* 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: | ||
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==== 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 [[https://sensorium.github.io/Mozzi/download/|library]]\\ | ||
+ | and install it like described here: [[https://www.arduino.cc/en/Guide/Libraries#toc4]]\\ | ||
+ | |||
+ | Unfortunately there is nowadays a glitch in the Mozzi library. Arduino change the compiler. Now the uploaded code is smaller but a timing problem appeared, too. Here is an description about the problem. | ||
+ | [[https://www.instructables.com/id/Arduino-IDE-16x-compiler-optimisations-faster-code/]]\\ | ||
+ | |||
+ | 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/]]\\ | ||
+ | \\ | ||
+ | |||
+ | Code:\\ | ||
{{ :paper_bits:mozzi_midi_poli_12_1sec_limit.zip |}}\\ | {{ :paper_bits:mozzi_midi_poli_12_1sec_limit.zip |}}\\ | ||
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