Christmas tree wired with 96 sections of lights cut into 12 volt sections. Originally designed for an outdoor flagpole tree of lights. Consists of 16 strings of 6 sections each, using 96 PLC outputs. For the effect of the lights the video was taken before any ornaments were placed on the tree. Each section is controlled by one of 6 - 16 output DC cards on a SLC 5/03 rack. Originally I had it powered by a 12 volt 3 amp power supply. but as I added more sections I found the supply got overloaded with only a quarter of the lights on, so I upgraded to a 30 amp, fan cooled power supply (with all lights on it pulls just under 16 amps with the voltage reduced to 11 volts).
The PLC is connected to a Ethernet COM port through a WiFi access point and controlled by one of 2 PC's I have running AdvancedHMI.