I recently bought a Sipeed Maix II Dock. For my purposes, it’s an IOT device with a camera and screen that can also run a complete Linux environment. The core board is fairly cheap, and even the docked version comes in at around £20. The full specifications of the board are available from SeedStudio Getting this running has been a bit of a journey for me. Between using a Mac as my primary OS and struggling with the Chinese forums I’d not been able to find a “how to get started” site that worked for me.