Quadcopters to Alzheimer's solutions: readers' best Raspberry Pi projects

Solutions for a relative's Alzheimer's disease, a time lapse camera and a gingerbread robot which dances when it detects a human face – these are just some of the projects you've been telling us about after we asked you to show off your inventiveness with Raspberry Pi and other electronics platforms such as Arduino. If you're a regular reader this idea may be familiar to you – we also asked you to show us the Raspberry Pi projects you'd been working on towards the end of 2015. Many of you responded to that by telling us how you'd adapted and incorporated Arduino into your hardware projects – so we widened the scope. As well as the highlights below, you can see all of the projects you've shared so far – and tell us about yours – at this GuardianWitness page, or, discuss the ideas in the comments. First up, one of many musical ideas you've been sharing.