Eigenharpist Geert Bevin let us know about this tutorial, which looks at using an Eigenharp Pico to control a Moog Slim Phatty via control voltages:

There has been some interest in using an Eigenharp with Control Voltage, so I recorded the following tutorial video. It shows how to create an Eigenharp Pico configuration from scratch in Workbench so that you can play your analog synthesizer over Control Voltage. This requires EigenD 2 and a DC-coupled audio interface or a similar solution like the Expert Sleepers ES-3.

I’m using the Expert Sleepers Silent Way plugin to generate calibrated pitch voltages, but all the principles should apply to MOTU Volta also if that’s what you’re using.

The Pro version of EigenD 2 is required to use Workbench, but it’s possible to achieve CV control by modify an existing factory setup using Belcanto and the non Pro version of EigenD.

Finally, this video also gives a nice taste of the possibilities of the Eigenharp keys and the expressiveness that you can achieve with them.

The same approach could be used with an Eigenharp to control other CV synthesizers.