Green led on Arduino Uno indicates the 'ON' condition when it shine.
Yellow led connected to the digital pin 13 , so we can programmed that led.
yellow led stop shining means all the power is drained out by shift register and this is not any problem.
There will be a short in wired connection so that green led stop shining.
So, check your connection, is it according to the pinout configuration of shift register.
Posted On: 02-Jan-2016 07:04