Smart Knob

Smart Knob.

It's a battery operated knob for controlling volume of my home cinema setup. Will connect to Home Assistant, once I figured out the electronics. Wireless, of course.

BOM:
- 1x bearing type 6810 (50mm ID, 65mm OD, 7mm thickness)
- 3x Keystone battery clip 209
- 3x Keystone battery clip 228
- 1x rotary encoder with 7mm mounting hole, 6mm knurled shaft (the cheap amazon kind)
- 2x M3x15 bolt (button head) from the battery compartment up all through the stack
- 2x M3x10 bolt (button head) from the ring clamp up to the top
- 4x M3x15 bolt (button head) for connecting ring gear with ring
- 8x M3 nut
- two component (addition) silicone, Shore A50 or similar for the feet
- 1x Wemos D1 mini or something similar for connectivity
- 1x low drop linear 3.3V regulator for maximum efficiency while CPU is sleeping