Robotic arm build tutorials covering 6-DOF manipulators with 3D-printed parts, servo motor control via PCA9685, and Bluetooth smartphone operation. Includes complete mechanical design, wiring, and Arduino programming guides.
Upgrade the potentiometer-controlled 3D printed robotic arm to Bluetooth control with an HC-05 module, an Android app made in MIT App Inventor, an Arduino Uno and a PCA9685 servo driver. The arm stores up to 10 poses and plays them back once or in a loop.
Build a 6-DOF robotic arm from 3D printed parts and an Arduino Mega: three MG996R and three SG90 servos on a PCA9685 driver, one potentiometer per servo. Parts list, print settings, assembly, wiring diagram and the full Arduino sketch.