tiergrinder Jupiter Clone Demos

Published on Jul 17, 2015 tiergrinder

1. Jupiter Clone Demo
"Small audio demo from my jupiter clone project.

Latest additions are JP8's cross modulation section and locig for the preset buttons and display driver. There is no patch memory yet but logic for controlling patches and showing patch numbers on LCD's work.

Arpeggiator melodies are from Roland SH01 Gaias arpeggiator where I made arpeggiator patterns similar to JP8's arpeggiator."

2. Jupiter Clone Demo - Work Still In Progress.
"Small demo to show basic parts that are ready and how those work together.

Volume gets pretty high at the middle part of this demo while playing with PWM modulation stuff.

End parts song snippets :
Europe - Final Countdown
Van Halen - Jump
Synthartist69 - That 80's Sound (Adaption by me)"

3.DIY Jupiter Clone - Broken Date
"Jupiter Clones casing is now done and first boards are fitted in.
In this video three voices from total of four are in use. I still need to build last two oscillator cards to get 4 voice polyphony. Filter and VCA for the last two cards is ready but needs tuning.

DR-202 is sequencing midi notes to Midi to CV converter which controls voices polyphonicly. Additional 808 beats and bassline are audioloops that I added in video editor."

4. Jupiter 8 VCO clone
"Short video from my latest DIY build.
This video shows two DIY JP VCO voice cards build on veroboard. Each containing one VCO with saw, square and pulse witdh modulation. Together these two vco cards make one voice. SH101 sends CV to voice cards and GATE trigger to DIY VCADSR circuit.

These is a small error on the info text in the video. Originals NF510 fet is replaced with 2N3819, not with 2N3918 as mentioned in the video."

tiergrinder SH20 - MS20 Style DIY SYNTH

Playlist:

1. SH20 sampleholddemo - Published on Sep 28, 2012
"Simple demo of my DIY ANALOG Synths sample and hold circuit.

LFO1 triggers envelope generator and S&H's clock. Basicly synth is playing itself, S&H takes random voltage from the white noise generator everytime LFO triggers its clock input. Sorry for the poor video/audio quality."

2. DIY SYNTH BASSLINE DEMO - Published on Oct 2, 2012
"DIY SYNTH DEMO

Dirty bassline made with two VCO's both using square wave.
Just wanted to show how this synth sounds with detuning and some PWM tweaking.
I use VCO1's scale switch on couple times to change the octave scale, most of the time VCO1 plays one octave lower than VCO2, as a "sub" oscillator.

Signal path :

VCO1 and VCO2 goes to VCO mixer, there to Moog filter, and there to VCA. Envelope generator 1 controls VCA with sequence triggers from SH101.

This time I managed to get video quality better but sound is still pretty raw :/"

3. DIY SYNTH - ARPEGGIATOR - Published on Oct 2, 2012
"DIY SYNTH SIMPLE ARPGGIATOR DEMO

Simple arpeggiator demo to show how saw waves sound on this diy synth.
I have wrong pot on MS20 filters cutoff.. should be 10K and I have 100K so tweaking is bit tricky :D

VCO1 Saw wave routed to MS20 filter and there to Moog filter
VCO2 Saw wave routed to Moog filter"

tiergrinder TR-808 Clone

Published on Jul 30, 2013 tiergrinder

"This project started when I build couple of 808 sound circuits about a year ago. I had a 808 kick and snare, and later on I wanted to test if I could design the rest of the sound circuits on veroboard too. At the moment I have all the 808 circuits build, apart maracas and cymbal. I packed all the individual sound boards in a case and got a Midibox Core, DIN and DOUT kits from SmashTV to build a MB808 standalone sequencer to trigger sound circuits."