The author remixed this model.
On this version the diffuser is integrated into the walls, a multicolor printer is needed. I printed mine on the XL with grey and clear PETG. When importing into a slicer, “single object having multiple parts” has to be selected. This way all the parts are in place. Then the color of the window tiles can be changed.
The base is different too, because there is no diffuser anymore, so the walls has to be supported from below. Also a version for NodeMCU was added.
Lastly is a part for led strips. There is room for 16 LEDs with a 30LED/m srtrip by making a coil.