This is a modular system for building indoor gardens. It is designed specifically to work with 18mm PVC piping. It is a project in progress, that we will be updating as it goes along.
For more information on it, follow the project log on Hackaday I/O: https://hackaday.io/project/9059-indoor-growbot
It includes different kinds of joints for building the frame, and will also include all kinds of mounts developed for sensors, webcams, power supplies, microcontrollers, microcomputers, water pumps and more.
We've also included the SketchUp file, so please feel free to dive in and make your own modules and we are very eager to see others using this, so please make sure you share and post too!
Subsystems like 3D printed water pumps, fish feeders, etc., will be included in a collection made specifically for this project.
The design is pretty forgiving regardless of the settings you apply. The PVC pipes fit into the joints fairly tight. Be patient and take your time.