From the Loftsmith community
Drone PID ball-joint tuning mount
A little stand for tuning a quadcopter's PID settings without letting it fly off. The frame sits on a ball joint, so it can tilt and settle while you watch how it reacts. Change the motor spacing and prop size to match your own quad.
4 parts · 37 g · 50 × 50 × 81 mm
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No adjustable sizes
Ask for the sizes you want to tweak, e.g. “make the width adjustable”.
How to print it
Parts
- post · PETG · Upright on its threaded foot
Ball on top; the underside of the ball is a 45° slope, so it needs no support
- base · PETG · Flat side down
- retaining ring · PETG · Flange down
- socket cup · PETG · Deck down (flipped)
Print settings
- Layer height
- 0.2 mm (0.28 mm draft gets close to 1 hour)
- Walls
- 2
- Infill
- 15%
- Supports
- None
- Notes
- Single PETG spool, so no prime tower. This is a fit test, so default strength settings are fine. Print all four parts on one plate.
Assembly
- Slide the retaining ring up the post from the foot end, with the threaded side facing the ball.
- Set the socket cup down over the ball.
- Screw the ring onto the cup until it stops. The ball is now trapped with a little play.
- Screw the post foot into the base, hand tight. Then swing the cup around to feel the motion.
Good to know
- At 0.2 mm layers it's about 1 h 15 min. Switching to 0.28 mm draft layers should bring it close to an hour; that's my estimate, so check your slicer.
- The threads and ball fit haven't been tested in real life yet. If the ring binds, raise Thread clearance; if the ball rattles, lower Ball play. Both are on the Adjust tab.
- The mini's threads use a finer pitch than the full-size ones, so it tests the ball and swing feel exactly. Treat the thread fit as a close guide, not a perfect match.
- The see-through stand next to it is only there for scale and doesn't print.
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