The project may be assembled with a few 3D printed parts, described below. The parts can print with no supports. You'll need to print multiples of some parts:
Servo Rack
- 1x servoRack_base.stl
- 1x servoRack_top.stl
- 1x servoRack_topBrace.stl
Aluminum Extrusion
- 3x extrusionMount.stl
- 1x electronicsMount.stl
Acrylic - 3 mm thick
- 1x acrylicBrace.stl
- 4x acrylicPegs.stl
Servo Horns
- 16x servoHorn.stl
The STL files can be downloaded directly here or from Printables. Also included is a .DXF file for the acrylic base. More details on that file can be found on the Assembly page in this guide.
Servo Rack
Three parts hold and mount the servos so that they sit on a curve directly above the lyre strings.
Aluminum Extrusion Mounts
The Feather and servo driver are mounted to a piece of aluminum extrusion with a 3D printed plate. The piece of extrusion slides onto three mounts that are secured to an acrylic plate. The extrusion also counter balances the weight of the servos.
Acrylic Pegs
Four pegs are mounted to the acrylic plate to raise it to the correct height for the servo motors.
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