I decided to build a four channel version of the ComputerVoltageSource to replace my SynthModule.com PSIM. I wanted the larger 2x16 display and I could fit a four channel version in the same 3U space. I didn't include the SpeakJet as I didn't really use it that much. Having the calibrated inputs with level shift and non-volatile data storage are nice additional features.
I kept a similar look and feel to the front panel with the same vertical spacing with the exception of the top row of LEDs and the MIDI connectors.
DJB-4 Channel CVS design documentation includes specifications, schematics, parts list, PCB layout and image. This design information is a subset of my CVS design documentation.
DJB-4 Channel CVS FrontPanelExpress design file is a 3U x 5U MOTM-style panel using HPGL graphics to minimize cost.
Here is the depopulated board with parts for only 4 analog inputs and outputs installed. I still used an AtomPro28 to have the non-volatile memory.
There still are a lot of wires to the front panel, even on a four channel version! I made the aluminum bracket which mounts behind the rightmost controls and MIDI jack.
Here are my two ComputerVoltageSource modules along with my Level Shifter module which is used to generate +/- 5 volt outputs.
DJB-4 Channel CVS Programs
All of my operational and verification/calibration programs have been moved to my Programs page.
I have also documented a number of hardware and software details for the AtomPro24 and AtomPro28 in my AtomPro FAQ updated