

Panel of 96 addressable LEDs
Here is a panel of 96 addressable LEDs 56mm wide by 92.5mm high
12 * 8 WS2812B V5 black LEDs.
This will allow you to build your BackBoard without too many worries, the + 5Volt at the top, the GND at the bottom, and a signal input / output that is very easy to assemble.
Each LED is separated by 2 mm from its neighbor, approaching the 144 L / M LED strips, if we assemble 2 panels the chip between the 2 side LEDs remains 2mm.
4 small notches allow you to fix the panels on the BackBoard.
A panel consumes a maximum of 5.76 Amps.