Building your VST has never been easier. Most of the times this can be a slippery slope with a danger to fall in too many details and variables, but think of it as an extension for emulating your loved hardware.

With only ~100 Eur you can benefit from having your own customized range of VSTs. And what's great is that you can get the SDK for free accessing https://www.synthedit.com/software-development-kit/.

And once you're there, feel free to also visit: https://www.synthedit.com/community/ under which you will find a bunch of resourcing material to be used in your learning path.

Synthedit is a plugin development tool that brings you visual programming, without a need to learn to code in C++. It's undeniably more versatile to build your virtual instrument when you can code in C++, but as far as constructing and emulating modules and connect them should clearly be more easy with Synthedit.

If you already know your logical scheme it should be pretty easy to start deploying in the program.

Here are some main features of Synthedit:

A basic feature would be that you can start a new project by clicking file -> new (Ctrl + N)

Then in your new opened window you'll have tool click right on the window and your journey can start by simply adding modules

There are not many tutorials on how tie things up, but we're sure that with a minimum read of its manual and some logical electronics applied, all will go out well, and eventually your container will look and operate great.

There is another function to get the hold on, which actually allows users to edit their own panel. So feel free to start designing your own interface, adding images, preferred knobs and so on and so forth.