Synthetech | Riding the Korg Out.. NJM2069 Filter Chip Module @Synthetech | Uploaded January 2016 | Updated October 2024, 19 minutes ago.
.... "waitin' for the thaw out
On a full moon night in the Rocky Mountain winter."
Sound familiar?? REO Speedwagonish??
This is a Korg VCF Filter Module prototype.
Essentially I recreated the Korg DW 8000's VCF on a breadboard.
Parts were all removed from the DW 8000's PCB and rebuilt on the breadboard seen in the video.
More tweaking and fine tuning is needed.. this is just the beginning...
Synth voice provided by a Yamaha TX7 Module that is hidden directly below the M-Audio Oxygen Keyboard.
Output of TX7 is directly input into the chip.
Output of the chip is directly output to a TRS Jack.. then a simple cassette player adapter was used to input the audio from the chip to a Boom Box seen above the workbench light.
Need to patch in better pots.. the linear 100k pot used for the Filter Cutoff had a very short usable span to adjust tone.. hoping 50k Logarithmic pots I ordered will stretch out adjustment range considerably later on.
Future plans are to build this on a permanent PCB/Veroboard and possibly refit it inside a FM synth like the TX7, Casio CZ 101 and maybe make another external Module with MIDI control features... possibly an adjustable LFO with several waveforms to choose from... either using Electric Druid's PIC chips or a custom Arduino Sketch and a DAC chip.
.... "waitin' for the thaw out
On a full moon night in the Rocky Mountain winter."
Sound familiar?? REO Speedwagonish??
This is a Korg VCF Filter Module prototype.
Essentially I recreated the Korg DW 8000's VCF on a breadboard.
Parts were all removed from the DW 8000's PCB and rebuilt on the breadboard seen in the video.
More tweaking and fine tuning is needed.. this is just the beginning...
Synth voice provided by a Yamaha TX7 Module that is hidden directly below the M-Audio Oxygen Keyboard.
Output of TX7 is directly input into the chip.
Output of the chip is directly output to a TRS Jack.. then a simple cassette player adapter was used to input the audio from the chip to a Boom Box seen above the workbench light.
Need to patch in better pots.. the linear 100k pot used for the Filter Cutoff had a very short usable span to adjust tone.. hoping 50k Logarithmic pots I ordered will stretch out adjustment range considerably later on.
Future plans are to build this on a permanent PCB/Veroboard and possibly refit it inside a FM synth like the TX7, Casio CZ 101 and maybe make another external Module with MIDI control features... possibly an adjustable LFO with several waveforms to choose from... either using Electric Druid's PIC chips or a custom Arduino Sketch and a DAC chip.
