A build guide for “Nabito – the open socket” is available now. You can find it at:
https://www.instructables.com/id/Nabito-the-Open-Socket-Cheap-Smart-Meter-for-EV-Ch/
It’s a €50 ($60) smart meter designed to be used for charging of electric vehicles.
The GUI web application is available at https://github.com/sysdist/nabito-app