Intro: Arduino Robot Arm
This is my arduino robot arm. It is made out of aluminium plates. I used 5 servo motors. The arm can lift around 50g. Motors are powered with 5V and each motor draw around 1A of current, but my power supply was 15V. So I made simple circuit out of five 7805 regulators. It isnt the best way to lower the voltage but it works.
Control box consists an LCD display, 3 buttons, 4 potentiometers, 5 LEDs and ON/OFF switch. All components are connected to the circuit inside the box. The circuit is made out of 3 microcontroller - 2 atmega8 and and 1 arduino. I could use only arduino to control the robot, but I wanted to make a system of three microcontrollers all connected together.
LCD display serves as menu. You can choose 7 differrent programs or manual control with potentiometers. When you chose manual control, LCD will display position of each servo.