TRG-1 in action.

After much faffing with far to many components I’ve finished the circuits used to control the VCF (Voltage Controlled Filter) of my Juno.

Here are a few samples with the TRG-1 being triggered from my TR-707 drum machine and taking a control input from my Expression pedal. The TRG-1 is then providing the Trigger and VCF Control signals to the Juno 6.

First we have just the Juno on its own.

Juno unconnected

Next we have the Juno being controlled by Channel 1 of the TRG-1

TRG-1 Channel 1

And finally the Juno being controlled by Channel 2 of the TRG-1

TRG-1 Channel 2

I still need to make a few modifications to the envelope generator of Channel 1 but so far I’m happy that the unit does everything I intended.

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