electronics made easy
This is the old fritzing discussion forum. Search it for valuable information from 2009 to 2015.
In the Fritzing example, there is a bridge between Serial Data Input(14) on the first 74HC595 to the Serial Out (9) on the second 74HC595 and it is EXACTLY BACKWARDS! It has to go from Serial Out on the first 74HC595 to the Serial Data Input on the second 74HC595