(Huh, apparently Griffin stopped making them in 2018, so I guess there's room for a replacement. I covet one every time I remember they exist but I never quite covet one enough to actually want to spend the money getting one...)
https://www.microsoft.com/en-us/p/surface-dial/925r551sktgn?...
The concept of the knob made of concrete is fully inspired by DIY Perks.
I'm not sure, but Griffin does not offer you all the perks I've described below:
- Open-source Arduino-compatible firmware so you can add your functionalities and light effects;
- The audio is controlled with the HID library instead of potentiometer; spare time - There are one audio input and two outputs that can be switched with the hardware switch;
- Bonus option is you can use it as a scrolling knob;
- The audio lines are connected to the microcontroller and you can add light effects relative to the sound;
- It is 3d printed and we also added a 3d printable model of the mold for the concrete part;
Have a nice day ;)
Teenage Engineering makes one of these:
https://teenage.engineering/products/orthoremote
It is designed as a remote volume control for one of their synths but it is a generic bluetooth volume control device that can be used with anything.
I have one - very nice and very high build quality.