Multi legged robots such as spiders can be very complex and expensive. The Terra-Spider is a relatively cheap and simple multi-limbed robot made with acrylic, 3D printed parts, Arduino UNO, and the XBee Wireless module.

The DIY spider robot is designed by students from the California College of the Arts, and it is engineered as an autonomous robot capable of exploring vast landscapes over a large period of time.

Inspired by farming robots, the spider robot is programmed and equipped with tools to mapping, create patterns, drilling, or spray the soil.

The Terra-Spider is powered by Arduino UNO and uses the XBee shield to communicate wirelessly. Most parts of the robot are made from Acrylic, and only the drill holder, extruder head, and gear track are printed with a 3D printer. Each leg is designed to walk smoothly on almost any terrain.

The Instructables tutorial shows you step-by-step how to build the spider robot, and has a ton of useful information about how to operate the system.

The Terra Spider robot in action