Set of lanterns originally from a Mr. Christmas set that I had wired together as a set as seen on my Bedroom Christmas Window video. I wired them into 7 individual circuits & changed the PLC output card to a TTL card. Each lantern now flickers individually and after a few seconds they turn off for a about half of a second in order.
This is run on a SLC5/03 controlled by 2 PC's running AdvancedHMI through an Ethernet COM port. The card is powered by a 5 volt power supply with the voltage turned down to 3.7 volts (to be gentler on the 4 volt bulbs). The steady on time and the pulse time can be changed by either HMI. I place these lanterns on the sill of my bedroom window for Christmas.