5DOF robotarm with MG90s servos

cults3d

Update 20190910: Added 44mm wide, 90mm arm and 1mm bearing for use instead. Update 20190822: Installed new reinforced servo holder for base, new gear for SG90 microservo, and screwable gear for MG90S servo. Update 20190819: Reinforced version of servo holder V3 added. Update 20190817: Longer arm (90mm length) installed. This small robot arm features five degrees of freedom for training purposes. The gripper is basic in design, but the shoulder MG90S requires higher torque loads to function effectively. The robot arm is powered by an Arduino connected to a Sensor Shield V5.0 with a separate power supply for the servos. I had to test several MG90S servos due to concerns about weak cheap alternatives for the shoulder. The popular 9g ones may work well in the gripper and rotating wrist. All parts except the gripper can be printed using a 0.5mm nozzle to minimize printing time. M2.5 screws are required to attach the servos. The cube (Basis_logo) was filled with concrete to secure the robot on the student's desk. Happy printing!