74HC595 not responding to Arduino

I am trying to learn how to make a shift register work. I have been working off of the Arduino ShiftOut tutorial.

My issue is that the shift register isn't working when the circuit is powered and I am not sure what is wrong. I suspect the issue is with pins 10-13 on the 74HC595?

I have done this with an actual board and the 123d.circuits.io simulator with the same result:

The code is basically verbatim from the tutorial as well (just added a Serial.println to the loop).

IC pin15, an output, is also Grounded, looks like.

And the LEDs are all shorted, turn them 90 degrees like so that they're in different rows.

And the LEDs are all shorted, turn them 90 degrees like so that they're in different rows.

Thanks that was it (I also removed the ground from 15)

I appreciate the help, I'm just getting started so I figured it was something basic I was missing.

You should also add some decoupling caps.

Shpaget:
You should also add some decoupling caps.

Where would you add that--ST_CP (pin 14)?

3mpire:
Where would you add that--ST_CP (pin 14)?

Oh, Good Lord - No!
It would be from pin 16 to Gnd.
De-coupling is something that can be made way too big a deal out of (now somebody will reply as though I insulted his Mom - wait for it...)
It would be 0.1uF (rated 10V or more.)

My mother said we would be better of using a 100 nF cap.

dave-in-nj:
My mother said we would be better of using a 100 nF cap.

Well, she's a right old cow.

When choosing between a 100nF cap and a 0.1uF cap for decoupling I always go for the 0.1uF :slight_smile:

May I ask what is the reasoning for deciding the decoupling capacitor's capacitance?
Obviously I'm not referring to the difference between 0.1uF and 100nF... I'm a noob, but not that much....

rlogiacco:
May I ask what is the reasoning for deciding the decoupling capacitor's capacitance?
Obviously I'm not referring to the difference between 0.1uF and 100nF... I'm a noob, but not that much....

EDN magazine has a very detailed article on choosing a decoupling capacitor.
http://www.edn.com/design/components-and-packaging/4351231/EDN-Access-09-01-95-Don-t-let-rules-of-thumb-set-decoupling-capacitor-value

Another article with better graphics Renesas Electronics Corporation

rlogiacco:
May I ask what is the reasoning for deciding the decoupling capacitor's capacitance?
Obviously I'm not referring to the difference between 0.1uF and 100nF... I'm a noob, but not that much....

Habit, it is good enough most of the time. At one place I worked then 22nF was the standard because those caps were marginally cheaper and we made boxes by the million.