Blast gate servo mount 2.5"

** Updated the Arduino code*** V2 - 2020-05-27
The original was a little to big for what I was doing. The small servo arm now fits directly on the servo, and all the holes are M3 size so there is one size screw to deal with.

I'm using current sensing on the tools to trigger opening the gate.
I'll post a video of it in action.
The blast gates I have are modified from the originals that were not self cleaning. with a little plastic and a hole saw, they are very smooth and don't clog any more.
I've included the Arduino code. I used a Nano shield and 2x ACS712ELC-20A current sensing chips I got on a board from Ebay.

here it is in action: https://www.youtube.com/watch?v=l-SHjU0vwrI&feature=youtu.be