Coffee Grinder Automation

https://youtu.be/9uZRwW8AOLE

So I bought a [coffee grinder](https://www.amazon.com/gp/product/B00W47J1EI) and discovered I'm far too lazy to grind my coffee by hand... but the coffee is AMAZING when ground by hand...

So... I bought a [servo...](https://hobbyking.com/en_us/hobbykingtm-high-torque-servo-mg-bb-w-proof-12-8kg-0-22sec-58g.html?___store=en_us) and modified it to spin forever... (I centered the pot, then cut the nob off it... and ground the gear stop off the gear...)

And I printed a thing... and I used a cheap servo tester to drive this, I suppose if I got fancy I'd program an Arduino Nano to generate the PWM signal I want for a specific amount of time necessary to grind my coffee...

I power it with a USB wall charger... I tested it off a powered USB hub and it seemed fine, but I'd be concerned about amp draw.

M3x26 bolts to hold it on the coffee grinder, M3x8 bolts to hold the servo in... you'll need an M3 tap.