Robot Arm using Potentiometers and Servos
This robot arm uses potentiometers to determine where the human arm is and then a servo controls the robot arm to match the position. “Each joint on the master arm is a potentiometer(a variable resistor). A joystick port basically checks the resistance. By itself, this resistance means nothing, so I wrote a little routine that converts a resistance into an angle that the servos can understand. To do this