lo-tech.co.uk is home to a range of retro computing and RaspberryPi projects, providing hobbyists with assemble-yourself expansion boards for retro IBM and retro Tandy PCs since 2012. The PCB range currently consists of memory boards, storage boards, sound boards, and some diagnostics related products. Raspberry Pi modules include with two GPIO interface modules, a 24-bit VGA adapter, and interfaces for specific products such as the Rollertec Garage Door opener.