How to build a Simple Arduino Robotic Arm

The Simple Arduino Robotic Arm project operates by combining basic structural fabrication with programmable electronic control. At the heart of the system is an Arduino board, which acts as the central processing unit and runs code developed in the Arduino IDE. This board connects to multiple servo motors using jumper wires. Servo motors are specialized rotary actuators that can be precisely positioned to specific angles based on command signals sent from the microcontroller. To power these motors adequately, a separate power supply is utilized, ensuring the Arduino does not experience voltage drops or instability during operation. Structurally, the physical arm and its joints are constructed out of cardboard and assembled using a hot glue gun to provide a lightweight yet rigid frame. When the Arduino executes its programmed routine, it sends pulse-width modulation signals to the servo motors, causing their output shafts to rotate. Because these motors are physically linked to the cardboard joints and linkages, their rotation translates into mechanical movement, allowing the arm to pivot, lift, and grasp objects in a manner similar to industrial robotic arms.