  This paper provides an overview of the hardware and software components used
in our test bed project the NET Playground. All source information is stored in
the GitLab repository (https://gitlab.com/Paulteck/net-playground). In the
Hardware section, we present sketches and 3D views of mechanical parts and
technical drawings of printed boards. The Software section discusses relay
control using shell scripts and the utilization of Ansible for automation. We
also introduce a C++ framework for connecting with the INA231 energy sensor.
This paper serves as a reference for understanding and replicating our
project's hardware and software components.
