The Raspberry Pi has become one of the easiest and most popular tools to learn programming or hack together a tech solution with add ons – it can even take on the tasks of a conventional home computer, and its latest model is so cheap it comes free with a magazine.

Its British makers have shipped millions of the credit card-sized machines since launching in February 2012, and we want to know how you’ve been using them.

Whether you have pieced a Pi-based system together from scratch as a fun joint project with the kids, or breathed life into some older tech you had lying around, contribute and we’ll gather together some of your success stories – or even tales of woe.

You can share your pictures and stories by clicking on the blue ‘Contribute’ button on this article. You can also use the Guardian app and search for ‘GuardianWitness assignments’ – add it to the homepage to keep up with all our assignments.