Tri Copter Rear Servo Angle Configuration Tool
thingiverse
This is a tool meant to mount on the tail motor shaft of a tricopter. It's designed for a 5mm x 11mm long shaft and the Wixey digital angle gauge WR300. The basic premise is it is used for calibration the tail servo position in Triflight firmware. It provides an easy way to measure the requred 0 degree postion at neutral and the +/- 40 degree positions at the extremes. I recommend fixing your tricopter to the table with tape so it doesn't move. And you'll need to tape the rear motor such that it can't rotate, so the wixey gauge remains facing rearward.
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