I could not afford buying one more hardware controller with faders to just send MIDI CC **(Continuous Controller) Data to my DAW (Logic Pro) such as **Modulation (CC 1) or Expression (CC 11), so i built a virtual one in the browser with the use of WebMIDI API.
It comes convenient because my keyboard controller sits a little bit far for me to reach.
To get the most of it, it would better if you have already pre-recorded the MIDI part (the MIDI Notes) and then, on top of it you overdub the movements of the virtual fader on your screen.
Try it Live here: https://ghostfader.netlify.app/
The repo is here: https://github.com/Man-on-the-Run/GhostFader-app