Waddling micro:bit Duck with Servo-Driven Rolling Feet

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Bounding box: 123.9 × 82.0 × 74.0 mm
Engine: Precision B-rep
Parameters: 28
Published: September 13, 2026

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The prompt

no no there should be a rollable feet thing that can work with a simple servo and space for microbit to connect

Parameters

Name	Value	Range
Body Length	80 mm	40 – 160
Body Width	60 mm	30 – 120
Body Height	50 mm	25 – 100
Body Corner Round	8 mm	0 – 20
Top/Bottom Fillet	3 mm	0 – 10
Head Diameter	30 mm	15 – 60
Eye Diameter	6 mm	2 – 15
Bill Base Diameter	14 mm	5 – 30
Bill Length	20 mm	5 – 50
Tail Base Diameter	18 mm	5 – 40
Tail Length	30 mm	5 – 60
micro:bit Slot Length	52 mm	20 – 90
micro:bit Slot Width	3.5 mm	2 – 15
micro:bit Slot Depth	12 mm	4 – 30
Servo Pocket Length	24 mm	10 – 60
Servo Pocket Width	13 mm	6 – 40
Servo Pocket Depth	18 mm	5 – 45
Servo Flange Relief Length	33 mm	10 – 70
Servo Flange Relief Width	13 mm	6 – 40
Servo Flange Relief Depth	2.5 mm	1 – 10
Servo Shaft Bore	6 mm	0 – 16
Wheel Diameter	48 mm	20 – 100
Wheel Thickness	8 mm	3 – 25
Body-to-Wheel Gap	3 mm	0 – 20
Axle Diameter	6 mm	3 – 16
Axle Height (above belly)	24 mm	10 – 60
Hub Hex Socket A/F	8 mm	4 – 16
Hub Hex Socket Depth	3 mm	1 – 8

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.

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