This is an enclosure for 4x 8x8 LED module using the MAX7219, a very common board.
I have tried to make the box as small as possible.
I have included an ESP D1 mini holder that scan screw on to the back and some nut holders for inside, using m3x10 screws it is very easy to assemble.
I got my LED modules here: https://www.amazon.co.uk/gp/pr...
and the ESP8266 D1 mini here: https://www.amazon.co.uk/gp/pr...