The grid is used from the original creator of the idea. As a basis the IKEA Pictureframe Sannahed (35x35cm) is used to integrate the LEDs. I use it as a nightlamp in the Bedroom to show the current time. With the Wifi module and the 16x16 LED grid that can display every thing the limitation is your programming skills ;-)
How to assemble:
Hardware:
To print:
The author remixed this model.