A new version of the Raspberry Pi, the $35 credit card-sized computer, will have a few design changes that will make it more robust, and it will still come with the same low price tag. For those that aren’t familiar, the Raspberry Pi is a low-cost, low-powered full computer that has been used by everyone from tinkerers to educators to gadget-makers. Developed by the UK-based Raspberry Pi Foundation and first launched commercially in 2012, more than 3 million Raspberry Pi boards have been sold. For $35, users get a super-tiny computer that can run Linux and be used in a variety of situations. A whole secondary industry has cropped up around the device, with third parties creating everything from add-on modules to cases to specific appliance builds.