Robot Dog / Pet Playmate

Please read all instructions beforehand to ensure you understand everything before starting and avoid any unpleasant surprises

Necessary components:

• 9 MG90S Servomotors (MG90s are not sufficient): 10pcs Metal Gear Servo Motor: MG90S Micro Servo Motor Compatible with Arduino, Fully Metal Gear Servo 180 Degrees Controllable Angle Mini Motor for Arduino: Amazon.fr: Toys & Games
• Arduino board (ESP32 recommended): Diymore 3PCS ESP32 WROOM 32 ESP32 USB C ESP32 NodeMcu Development Board 2.4 GHz WLAN WiFi Bluetooth CP2102: Amazon.fr: Computers & Accessories
• 22 M2 screws, 8 M3 screws: huruirui M2 M3 M4 M5 Nuts and Bolts Washers Assorted Set, 1065 Pieces Black Hex Socket Head Cap Screw Bolt and Nut Kit, Machine Thread Bolts and Nut Set Tool Assortment Kit: Amazon.fr: DIY & Tools

Assemble all the servomotors using 2 screws per motor. Also screw in the “rear” and “rear fixing” parts. You should get this:

Take the 8 legs with these parts:

Install them like this:

Add glue. The result should be this:

Be careful to leave access for the screws.

Do the same for the steering, but using this part:

Then assemble the “front”, “middle” and rear assembly using M3 screws + nuts (M2 screws only with a flat washer)

All you have to do is screw in the servomotors

Your robot dog is now complete.

The link to GitHub:

GitHub - PetoiCamp/OpenCat: An open-source framework for developing Boston Dynamics-style quadruped robots, perfect for STEM education, coding and robotics, IoT robotic applications, AI-enhanced robotic application services, research and development of DIY robotic kits.

I was inspired by this design, it also offers code, which may interest you: https://www.hackster.io/reductalimenitis/lotp-robot-dog-v2-73384f

Tip: Their modules are compatible because of their size (the same as on my dog)

If you encounter a problem, feel free to send me a message.

If your print worked, you can leave a comment (positive or negative, as you wish) with a photo of your creation