VFO MIDI controller via USB for Thetis, PowerSDR according to JI1UDD

Many radio amateurs are not fans SDR black box devices. They argue that, that they lack the front panel of the device with the tuning knob. JI1UDD felt the same way. However, the prices of original accessories are staggering. One possible solution is described in the article Remote station (SDR) tuning knob. But he created JI1UDD based on the microcontroller Arduino Pro Micro, rotary pickup and four push button MIDI controller for VFO tuning and control of tuning related functions.

Necessary components for VFO MIDI controller via USB

A preview of the JI1UDD VFO controller for Thetis or PowerSDR
A preview of the JI1UDD VFO controller for Thetis or PowerSDR

Arduino Pro Micro : 5V / 16MHz (AliExpress)

Rotary sensor : KY040 sensor can be used (AliExpress). In my case, RE160F-40E3-20A-24P in my stock is used.

Push button switch and cover : (AliExpress)

Software

With Control-Surface's nice midi library, almost no programming is required.

Cabinet

It is made using a 3D printer. I used a knob taken from an audio kit.

Thetis and PowerSDR setup

The rotary encoder and switches can be freely configured. Here is the JI1UDD setup:

I found a helpful video on Youtube for configuration:

You can find the entire procedure in the documentation https://github.com/ji1udd/VFO-Controller

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