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During the Electronics-Arduino course of the 2nd year of the preparatory cycle at Polytech Nice Sophia, Raphael ANJOU and I had the opportunity to create from A to Z a project of our choice.
Seduced by the quadruped robots, we quickly opted for the construction of a dog robot. Inspired by Spot (Boston Dynamics), Droid (Loki Le Dev), mini cheetah (MIT) and many others, we were able to create our first robot dog prototype.
Here, we present PolyDog, fully made in 3D printing with servo motors (13kg/cm). It measures 17.6 cm wide and 42.4 cm long. It weighs about 2 kilograms.The movement of the legs follows a 4 bars parallelogram mechanism, to keep the motors at the level of the body.
In this instructable, we will show you the manufacturing steps of our robot, so that you can reproduce it.


- Vernier caliper
- Hammers
- Screwdrivers
- Allen keys
- Various wrenches
- Clamps
- Files
- Cutting pliers
- Cutters
- Scissors
- Screwdriver
- Hacksaw
- Hot glue gun
- Soldering iron
- Voltmeter
- Self-adhesive label printers
- Roll tape


Electronics ($384) :

- Servo motors (TowerPro Metal Gear MG995) — Other servo-motors work better if you put more money into them. You just have to pay attention to the size of these so that it fits in the 3D parts.
- Servo controller Lynxmotion SSC32
- Arduino UNO
- IR remote control
- Pixy2 Caméra
- Alimentation de 5V et 30A
- Electric cable

Other supplies :

Screws and Hexagon Nut (provide more details on the length of the screws):
M3 : 18 ( body assembly)
M3 : 48 (assembly of the legs)
M3.5 : 48 (attach motors)
M2.5 : 8 (assembly of the legs)
M3 : 32 (links the servo and legs)
Threaded insert M3 : 18 (body assembly);
Metal spreader for servo motor;”

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