I made a super responsive remote control volume knob using Arduino and ESP-Now.

Its super satisfying to have an actual weighted and precise volume knob, rather than buttons on a remote control.

Link to solid model files and Aduino code:
https://etischer.com/arduino/remote_v...

I first soldered 3 wires to the volume knob in my DAC / Preamp, and connected them to an Arduino using a pair of OptoIsolators. A second Arduino reads a cnc rotaray encoder, and sends that signal to the first Arduino using a direct wifi connection called ESP-Now.

SMSL D-6s DAC
https://www.amazon.com/S-M-S-L-ES9039...

CNC Jog Wheel encoder
https://www.amazon.com/dp/B07G9G9VYC?...

Arduino with Wifi ESP-Now capability (3 for $15)
https://www.amazon.com/dp/B08D5ZD528?...

The other Arduino I used, this one fits better on a breadboard for development work
https://www.amazon.com/dp/B0C947BHK5?...

LCD 4x20 character display
https://www.amazon.com/dp/B086VVT4NH?...

OptoCoupler
https://www.amazon.com/dp/B08CXRHDHP?...

Weicon German wire stripper
https://www.amazon.com/gp/product/B00...



Link for Arduino programs and 3D print models coming soon...


0:00 Intro
1:01 DAC modifications
4:30 Hardware
6:30 Arduino software
9:43 3D printing parts
11:08 Testing and demo