Since 1997 we have made several different installations and constructions using red blinking Led diodes. Most often we place them in rows or fields of 100-1000 pieces or more soldering them parallel to copper/steel leads. Blinking Led diodes normally use 5V voltage which makes the constructions easy to insulate. The main interest for us is that Led lights are upposed to be a standard product and all equal, but actually they are all individual and have an own slightly different blinking frequency. That creates an interesting phenomena when a big amount of leds are runned parallelly. The individual Leds that happen to blink at the same time seem to start to create constantly changing and moving patterns.