Before we started the journey of the AstroPlant project, we investigated a multitude of technologies suitable for use within the AstroPlant project. We quickly noticed that many existing IoT applications exist, yet were not necessarily focused on experimentation and knowledge sharing. These IoT technologies offer either largely proprietary - general solutions to IoT, although with interesting features regarding massively distributed IoT devices, OTA updates (over the air), asset tracking and wide-range of connectivity options. In addition, very extensive plant monitor & control systems exist that offer most of the features we required, but are deemed expensive and not very customizable. On the other hand we were inspired by the development of open source systems that allow people to contribute, co-develop or re-purpose software & hardware.