The Valiant Turtle is a floor roving robot made by Valiant Technologies and was a popular education robot for teaching geometry and programming during the 1980s and 1990s. The robot was first sold in 1983 and was often used with the LOGO programming language. I started writing this article in 2009 when I obtained my first Valiant Turtle, however the turtle was not repairable due to the stepper motors being destroyed. Now (in 2016 and two turtles later!) I finally have a restored and working robot. Since it was such a struggle to find the necessary information on the turtle, I have collected the results of my research here. I hope this will make your restoration project easier than mine (and a lot quicker!). It is possible to connect the turtle using either serial or parallel connections from a microcomputer. Supported models (that I’m aware of) are the BBC Model B, RM Nimbus 186, Acorn Archimedes, Commodore 64, Apple IIe and a modern 9-pin serial connection to a PC. Here is a video of my restored Valiant Turtle in action: Simon Inns lives in Sweden and describes his hobby as “retro computing”. Fortunately the Turtle was one of his projects. In this article he goes into details I long ago forgot. Check out his other projects on: