Build an Arduino robotic arm in a coffee tin

This three-axis, joypad-controlled robotic arm is tincredible!

If you’d like a robotic arm to help you with everyday tasks, such as picking up and putting down cylinders, but don’t have $50,000 or more lying around for an industrial model, this simple gripper might be a good place to start. Maker “AleksandarT2” constructed his three-axis robot arm (four if you count the gripper) using four hobby servos and an Arduino Uno (ATmega328), as well as glue, tape, cardboard and a coffee tin!


“This is meant to be a beginner’s guide to how to build an Arduino robotic arm. It’s concept is to be cheap and easy to build,” the Maker explains.

Given his simple materials, the device works quite well — as shown in the videos below. It’s programmed with a modified game controller, then it can repeat the movements from memory. Impressively, in the second video the arm is able to pick up and put down a cylinder twice in a row with no apparent human interaction!

Code for this gadget is provided, as well as an overview of how to modify the game controller used as a “teach pendant.” As impressive as this ‘bot is, especially given the cardboard end-of-arm tooling (EOAT), it would be a great place to start even if one intended to use better mechanical components.

2 thoughts on “Build an Arduino robotic arm in a coffee tin

  1. Pingback: This five-axis robotic arm will lend you a helping hand | Atmel | Bits & Pieces

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