Navicat Posted February 16, 2015 Report Share Posted February 16, 2015 Here is a velocity control for each voice module of a TR-808. The concept is simple.. What i did is i took the accent circuit from the original schematics and i place a digipot that will control the velocity for every single voice separately. A Digipot chain will be connected at J19 of the STM32F4 Core. Each Digipot is controlling the Velocity Value on each instrument. So let's see. A Pin from Dout module sends a Trigger of +5 Volts. One Branch goes at the Trigger in of the Voice module. The other branch is going into my circuit. The digipot controls the velocity level from +5 volts to +15v. ( Even with 0 Velocity a 5v minimum trigger must go in voice module so we have sound.) The result is a Trigger voltage from +5v to +15v that goes into the Accent in of the voice module. What we have here is a velocity control for every single note. :rolleyes: I Need help on how to programm Digipots to do this job. Here is the schematic Accent 5-15v.PDF Regards Tilemachos 1 Quote Link to comment Share on other sites More sharing options...
ganchan Posted February 20, 2015 Report Share Posted February 20, 2015 that's a good one, i really like something similar to cv the decay of the voices. Quote Link to comment Share on other sites More sharing options...
zephyrin Posted February 24, 2015 Report Share Posted February 24, 2015 Hi i have used the seb Drumbox for have velocity control for each instrument of my tr8060. http://burnit.co.uk/sdiy/index.php?page=drumbox I have connected the accent and trigger input on the same output pulse. Trigger input work fine with a pulse between 5v and 15 v so you don't need to send a spécific +5 Volts. Quote Link to comment Share on other sites More sharing options...
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