https://paperpcb.dernulleffekt.de/ 2026-04-18T04:13:50+0200 https://paperpcb.dernulleffekt.de/ https://paperpcb.dernulleffekt.de/lib/tpl/writr/images/favicon.ico text/html 2020-06-11T22:13:25+0200 Anonymous (anonymous@undisclosed.example.com) https://paperpcb.dernulleffekt.de/doku.php?id=sound_boards:electric_intonarumori&rev=1591906405&do=diff Electric Intonarumori This noise board is a combination of two Paper Bits, the PB701 Electric Intonarumoriand the PB109 Voltage Controlled Oscillator II. It has two build in feedback, one for the voltage control of the VCO and the other for the delay control. They can be turned on and off. It also comes with a chip noise on/off button, a the boost and a mute button. text/html 2020-06-11T22:13:25+0200 Anonymous (anonymous@undisclosed.example.com) https://paperpcb.dernulleffekt.de/doku.php?id=sound_boards:midi_keyboard&rev=1591906405&do=diff MIDI Keyboard A 25 key Midi keyboard based on an Arduino (Atmega328P-PU). It has an small OLED Display, too. ---------- Paper PCB ---------- Code The Atmega 328 on the board should be programed and used like an Arduino UNO. For burning the boot loader and uploading the code please follow the manual for the text/html 2020-11-03T21:33:09+0200 Anonymous (anonymous@undisclosed.example.com) https://paperpcb.dernulleffekt.de/doku.php?id=sound_boards:sound_boards_main&rev=1604435589&do=diff Sound Boards * Voltage Controlled Oscillator * Electric Intonarumori * MIDI Keyboard * Symbiotic Synth * OGG Player Board ---------- License These Boards were designed by Wolfgang Spahn 2012-20. They are licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. ---------- text/html 2020-06-11T22:13:25+0200 Anonymous (anonymous@undisclosed.example.com) https://paperpcb.dernulleffekt.de/doku.php?id=sound_boards:symbiotic_synth&rev=1591906405&do=diff Symbiotic Synth A self-sufficient audio biofeedback device The Symbiotic Synth is a low voltage oscillator that is powered as well as controlled by the human body, thus an audible bio-feedback can be made possible. It was invented and designed by text/html 2020-11-26T01:44:15+0200 Anonymous (anonymous@undisclosed.example.com) https://paperpcb.dernulleffekt.de/doku.php?id=sound_boards:vc_oscillator&rev=1606351455&do=diff Voltage Controlled Oscillator This is a small Voltage-Controlled Oscillator - the heart of every analog synthesizer. It provides a square and a triangle wave, and it could be hard synced, too. The OpAmp is a rail to rail MCP6002 from Microchip. It is designed to use for experimts and development together with a breadboard.