torstai 1. joulukuuta 2016

Robertsonics WAV Trigger

Under works is PCB and frontpanel for Robertsonics WAV Trigger that I bought from Spark Fun Electronics ( The PCB and panel creates a frame where WAV Trigger can be fitted. Simple transistor circuits work as comparators that can be fired either from frontpanel switches or from external CV/GATE input voltage (anything between +-10V is OK). My idea was to use this sample player to play some pre-recorded sounds in live-situations. It is polyphonic (max 16 voices) so several samples can be played at the same time. This could also work as a drum machine where drum samples can be triggered from external triggers.

Moog Prodigy PCB version 5.8

This should be the final version of my Moog Prodigy Eurorack clone. Here is what I have done:

- some corrections and enhancements to the PCB
- fastening holes to allow some other frame format than Eurorack
- all the pots (Alpha 9mm PC mount right-angle) and switches (standard PC mount toggle) are now more common format that are easy to source
- new modifications
--> MW MOD SHAPE where LFO is replaced with modulation wheel adjusted CV. So it is possible to sweep the pitch or filter cutoff with modulation wheel. This works also in my previous version and the original Prodigy when you set the MOD SHAPE switch to center position.
--> OSC MOD PW1 where LFO modulates OSC1 pulse width (modulation wheel controls the amount of modulation)
--> External Audio input with level control