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1985
Guitar Synthesizer
Build Document last updated december 2018
Version 1.0 2018
The 1985 Guitar Synth is a Attiny85 microcontroller-based square
wave guitar synth/fuzz with both octave down, octave up and
detuned modes. The octave up oscillator is based on a frequency
counter and sounds super glitchy, like a malfunctioning R2-D2...
The octave down oscillator is much more controlled. This is the first
Parasit Studio DIY project that is fully digital and that allowed for
adding a fun hidden feature aswell... :-)
Happy building and playing!
PLEASE NOTE!
This project requires programming. You can get pre-programmed chips
together with the PCB from the Parasit Studio webshop or included with
the Musikding kit. You can also program your own Attiny85 chips if you
know how and have the required interface and software. You can find
the HEX files needed at www.parasitstudio.se
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Table of Contents
Related Manuals for PARASIT STUDIO 1985
Summary of Contents for PARASIT STUDIO 1985
- Page 1 R2-D2... The octave down oscillator is much more controlled. This is the first Parasit Studio DIY project that is fully digital and that allowed for adding a fun hidden feature aswell... :-)
- Page 2 CONTROLS POTENTIOMETERS • DOWN – The level of the octave down • UNISON – The level of the unison square wave • UP – The level of the octave up The unison is the direct fuzz which works well with chords. This is unaffected by the other controls.
- Page 3 PCB. Wiring For more info on how to wire up the stompswitch, jacks ect, please visit the Parasit Studio website and download the PDF called ”offboard wiring”. You can find it here: http://www.parasitstudio.se/build-docs.html...
- Page 4 1985 Guitar Synth Bill Of Materials (BOM) Resistors Capacitors IC's 100nF Attiny85 20PU 10nF Attiny85 20PU 470K 22uF 2.2uF Potentiometers 100K OCTAVE DOWN A100K 100K UNISON A100K 100K 100nF OCTAVE UP A100K 100K 22uF 100nF Switches 4.7K 100nF DOWN SPDT on/off/on...
- Page 5 Drilling template (1590B) • This template is approximate. Use at your own risk! • Make sure your printer isn't doing any scaling / is set to 100% print size. • Drill the DC jack and input/output jacks (and the optional reset switch) to your own preference.
- Page 6 Schematic...
- Page 7 Terms of use PCB's from Parasit Studio are intended for DIY use only. Commersial resale is not allowed. It's meant for personal use only, which means that it's not allowed to build alot of pedals and sell them for profit to strangers using public forums and craiglist ads.
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