Servo motor and PWM controller LEGO connectors
Set of LEGO-compatible connectors for servo motors (SG90) and the PCA9685 PWM controller
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updated March 26, 2024
Description
PDFConnectors with LEGO-compatible studs for mounting small (SG90) servo motors - plus a LEGO compatible ‘tile’ connector for a PCA9685 PWM controller.
The connectors can be used:
- either to build simple test beds for developing control code with (say) a Raspberry Pi or a simpler microcontroller like the ESP32, or
- for building complete LEGO constructs with ‘mechatronic’ moving parts.
More detailed context when used with a Raspberry Pi Maker Kit PCB assembly is available at this link and example ‘mechatronic’ software for a Raspberry Pi can be downloaded from here.
All the components use 1.75mm PLA and a layer height of 0.15mm with print details for each component produced on an i3 Mk3 shown in the table below.
| component file name/description | needs support (Y/N) | brim (mm) | filament length (m) | print time (i3 Mk3) |
| servo_horizontal_LEGO_case01_repaired: connector that mounts the servo horizontally with the drive shaft vertical | Y | 10 | 3.72 | 1h 45m |
| servo_vertical_LEGO_case01_repaired.stl: connector that mounts the servo verical with the drive shaft horizontal | Y | 10 | 4.05 | 2h 11m |
| PWM_module_LEGO_tile02.stl: connector that mounts the PCA9685 PWM controller on a LEGO-like ‘tile’ | N | 5 | 1.82 | 46m |
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Model origin
The author marked this model as their own original creation.
