To avoid any confusion: The concept of the knob made of concrete is fully inspired by DIY Perks. But we are added a lot of perks, like: - Open-source Arduino-

To avoid any confusion: The concept of the knob made of concrete is fully inspired by DIY Perks. But we are added a lot of perks, like: - 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 ;)