The presenter will show the audience U:Kit ( https://github.com/attachix/ukit). U:Kit is an open source (software and hardware) smoke and motion detector with the help of open source tools. U:Kit is easy to assemble, has a plastic case, and can be attached to the ceiling and used with minimum efforts also from non-technical savvy people. But that is just the tip of the iceberg. The presenter will share with the audience his experience in creating the devices and talk about some of the software and hardware challenges with which he and his team had to solve.