I have designed an Arduino Uno Robotic Arm . Entire arm can be designed from some scrap material and servos. Entire process of construction has been explained in detail below. The arm has been built with cardboard and the individual parts have been locked to servo motors. Arduino Uno is programmed to control servo motors . Servos are serving as joints of Robotic arm here. This setup also looks as a Robotic Crane or we can convert it into a Crane by some easy tweaks. This project will be very helpful for beginners who want to learn to develop a Simple Robot in low cost . This Arduino Robotic Arm can be controlled by four Potentiometer attached to it, each Potentiometer is used to control each servo. You can move these servos by rotating the pots to pick some object, with some practice you can easily pick and move the object from one place to another. click here for project files milin patel ...