EEZYbotARM

thingiverse

This is a 3D printed robotic arm with the intention to design something simple and cost-effective to build with great visual impact also. The test video is available at https://youtu.be/qovZKW0DxWkhttps://youtu.be/N55W8TdMfCo. Time was spent researching various examples on the web that could be a good starting point, and among them the Phenoptix MeArm V4 project stood out for its simplicity and low-cost parts involved. (http://www.thingiverse.com/thing:360108) The kinematics geometry from this project was kept intact, but all other parts were redesigned including the gripper. This resulted in a more refined and functional robotic arm. Update notes include updated instruction and round ramp STL (R01), as well as ball STL, and preliminary tests video available at https://www.youtube.com/watch?v=x9C_3WHr1G0https://www.youtube.com/watch?v=0OFL6MxbPIM. Additional updates include updated gripper R01 files, and an instructables link was added to the instructions. Instructions for building this robotic arm can be found on Instructables at http://www.instructables.com/id/EEZYbotARM/. In each joint, M4 screws with round heads are used. The vertical arm is stabilized using two brass pipes, one of which stays in place kept by the servos and the other is crossed by a M3 screw. Cheap servo sg90 from TowerPro was initially tested but was later replaced with metal gear servos MG90 for better performance. For driving the robot, numerous experiments were conducted using Arduino with various methods such as sketches, potentiometers, joystick, Wii nunchuck, etc. However, Pololu's servo controller proved to be a more convenient solution. This versatile controller allows for the attachment of up to 6, 12, or 24 servos depending on the type and comes equipped with software that provides an easy way to drive servos in manual moving slides, adjust speed and acceleration values, build sequences of commands, store them in the controller, or automatically generate code.