How to Create a Robotic Dog With 9G Servos
by Marc Yeh in Circuits > Robots
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How to Create a Robotic Dog With 9G Servos
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This is a Robotic Dog inspired by Boston Dynamic's Spotmini, but this time on a much smaller scale. This version of the robotic dog is created with a dozen Servos and some other components such as an Ardurino Nano.
You can find a great instructable covering how to create your own Servo Tester here:
Arrangement of Servos & Kinematics
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It is best if the Servos are arranged at 90° and then mounted on the "legs".
For kinematics:
All Legs = 48mm
Shoulder to Shoulder Pivot = 40mm (Left to Right)
Shoulder to Shoulder Pivot = 80mm (Front to Back)
With 90° being centered and perpendicular when assembled:
Shoulder Pivot +/-17.5° (Left/Right)
Shoulder Pivot +40.0°/-46.5° (Front/Back)
Knee Pivot: +70°/-73° (Front/Back)
BOM & STL Files
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Bom:
(1) Arduino Nano (Headless)
(1) 16ch PWM driver
(12) Tower Hobby 9g servo
(2) Frame-Vertical Pivot
(2) Frame-Vertical
(6) Frame-Stiffener Vertical
(6) Frame-Stiffener Horizontal
(4) Shoulder Pivot
(4) Leg-Upper
(2) Leg-Upper LH
(2) Leg-Upper RH
(4) Leg-Lower
(2) Driver Support
(1) Nano Support
The Stls can be found here:
https://www.thingiverse.com/thing:3145690
Full Credits to Design Cells for releasing the Stl files on Thingiverse; I didn't Design this myself.
Done!!!
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The code has yet to be released yet, but I'm sure that it'll be released soon. If anybody knows how to code, please relate to the original author.
Have Fun!!!