Hello! I'm trying to build a circuit from the first schematic on this page: http://www.allaboutcircuits.com/vol_6/chpt_7/6.html I fairly sure I built it all correctly, but when I turn it on, the first LED lights up and just stays lit! It doesn't shuffle through the LEDs, lighting each one in turn, like I thought it would. I did make a couple of adjustments to the schematic: Used distinct LEDs Changed the resistor for each LED to 220 ohms Used a 9V power supply I'm not sure if any of those adjustments would cause a problem, but I don't think they should. Does anyone know what the problem could be?