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Trumpet-Playing Robot Finger Mechanism

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Creation quality: 5.0/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

  • 6.2k views
  • 8 likes
  • 38 downloads
  • 1 collection

License
3D design format
STL Folder details Close
  • build-plate.stl
  • fingertip.stl
  • rack-left.stl
  • rack-middle.stl
  • rack-right.stl
  • servo-gear.stl
  • servo-mount-middle.stl
  • servo-mount.stl
  • servo-trumpet-attachment.stl

Learn more about the formats

Publication date 2018-12-17 at 14:05
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Published to Thingiverse on: 2018-10-23 at 01:41
Design number 40892

3D printer file info

3D model description

Finger mechanism for a Trumpet-Playing Robot. Includes 3 fingers that fit on the trumpet's body and can press each of the trumpet keys.

See the mechanism in action: https://youtu.be/qQjnSnuDjrw

Read how I designed it using OpenSCAD in the blog post: https://medium.com/@urish/designing-3d-printable-mechanisms-in-openscad-5838dcb65b39

Source code for models: https://github.com/urish/trumpet-robot/tree/master/hardware

What to print?

You will need to print the following parts:
* 3 Γ— fingertip
* 3 Γ— servo-gear
* 3 Γ— servo-trumpet-attachment
* 2 Γ— servo-mount
* 1 Γ— servo-mount-middle
* 1 Γ— rack-right
* 1 Γ— rack-left
* 1 Γ— rack-middle

Or you can simply print everything at once using build-plate.stl.

Required Hardware

  • A trumpet
  • 3 Micro servos (I used TowerPro MG90S)
  • 6 M3x10 screws for mounting the servos
  • 6 M3x30 screws for mounting the mechanism to the trumpet
  • 3 M3x16 screws and 3 M3 nuts for attaching the fingertips to the fingers
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