Servo Motor

This example is based on the first servo I grabbed from my shelf

Note

TowerPro MG90S Micro servo (TowerPro site)

Accuracy

Default external measurements will be to specification (so you may use it in your own creations without issue).

Default internal measurements, and design will be estimated based on external observation; I’m not looking to infringe copyright.

What I design might actually work if you printed it, but that’s not the point of this exercise

Hierarchy

The servo’s Assembly contains the following Assembly and Part instances:

servo
 ├── enclosure
 │   ├─○ shell
 │   ├─○ end_cap
 │   └── fasteners
 │       ├── front_left
 │       │   ├─○ bolt
 │       │   ├─○ washer (?)
 │       │   └─○ nut
 │       ├── front_right
 │       │      ...
 │       ├── back_left
 │       │      ...
 │       └── back_right
 │              ...
 ├── gearbox
 │   ├── bearing
 │   │   ├─○ outer_ring
 │   │   ├── rolling_elements
 │   │   │   ├─○ ball_1
 │   │   │   │  ...
 │   │   │   └─○ ball_n
 │   │   ├─○ retainer
 │   │   └─○ inner_ring
 │   ├─○ main_shaft
 │   ├─○ middle_shaft
 │   └─○ drive_shaft
 ├── motor
 │   ├── base_bearing ...
 │   ├── drive_bearing ...
 │   ├── rotor
 │   │   └○ shaft
 │   └─○ stator
 └─ driver
     ├── board
     │   ├─○ pcb
     │   ├── ... (components)
     │   └─○ potentiometer
     └─○ connector

Where:

• ─ denotes an Assembly, and
• ○ denotes a Part

The idea being that following branches should always end in a Part (so the ○ is a leaf)

Display

Todo

display completed servo example

from cqparts import display
# TODO: import Servo
servo = Servo()  # use default values

display(
    servo,
    highlight=[
        servo.find('gearbox.bearing'),   # assembly (branch)
        servo.find('motor.rotor.shaft'), # part (leaf)
    ],
)