This is an open-source fully 3D-printed four-legged robot, each leg of which is equipped with a 3-DOF joint and features a hip joint design.
With the help of the Arduino controller and the 16-channel servo driver board produced by Adafruit, it is easy to achieve programmed control, allowing the robot to perform various actions with ease and flexibility.
The system uses the CH12 wireless module for remote control, and the entire system can be easily operated by a remote control.
All components are molded in one go using the Ender 3 3D printer, and the whole machine is equipped with a total of 13 servo motors, with the cost controlled within $200.

Parts list:
9 DS3218 MG servo motors with a rated torque of 20 kg·cm and a size of 40 mm × 20 mm;
4 RDS 15MG dedicated servo motors for robots;
8 knee joint bearings with an inner diameter of 11 mm, an outer diameter of 4 mm, and a thickness of 4 mm;
8 hip joint bearings with an inner diameter of 10 mm, an outer diameter of 6 mm, and a thickness of 3 mm;
2 push rods of 3 mm × 110 mm;
2 M3×100 mm push rods;
1 Adafruit 16-channel servo controller;
1 Funduino joystick;
1 Arduino Uno main control board;
2 Arduino Micro microcontrollers;
2 HC12 transceiver modules;
2 mini breadboards;
And all kinds of connecting cables.

More code and detailed explanations will be released soon.