- 📖🕓 ≈ 5 min - In the first part of this series of articles, you recently learned what the motivation was for turning a ZENNER IoT Gateway Outdoor into a self-sufficient PV Gateway and what preliminary considerations were made. In this second part you will learn more about the components used, the construction with the first prototype and the findings from the Proof of Concept (PoC) carried out with it. Components used Prototype 1 The following components were already available