See the final module and the documentation

A prototype of the module 
PCB prototype 
Working prototype 
Module PCB preview 
Final module 
Ordered PCB

Light bar prototype build 
Two wiring versions tested 
Two wiring versions tested 
Two wiring versions tested 
Top 4 LEDs panel 
Top 4 LEDs panel 
Rotating lights test build 
0402 LEDs for rotating lights 
Gluing LEDs 
