Problem with shift register

Using Arduino Programming Questions
#1

Hi all. I have a problem with my shift registers (74hc 595) The "Hello World" sketch is working fine. But if I want to upload the "one by one" sketch nothing hapens. Sometimes the LEDs freeze.

#2

So how have you wired it up? Link to the code you have used?

#3

I have wired it up like in this tutorial: http://www.arduino.cc/en/Tutorial/ShiftOut

This one works: http://arduino.cc/en/Tutorial/ShftOut11

This one not: http://arduino.cc/en/Tutorial/ShftOut12

#4

Got irritated of this line:

  • 74HC595 shift register attached to pins 2, 3, and 4 of the Arduino,

Sorry!

#5

Got irritated of this line:

Why did that line irritate you? If you mean that the compiler didn't like it, you need to post the EXACT error message.

#6

This is one big comment section

/*
  Shift Register Example
 for 74HC595 shift register

 This sketch turns reads serial input and uses it to set the pins
 of a 74HC595 shift register.

 Hardware:
 * 74HC595 shift register attached to pins 2, 3, and 4 of the Arduino,
 as detailed below.
 * LEDs attached to each of the outputs of the shift register

 Created 22 May 2009
 Created 23 Mar 2010
 by Tom Igoe

 */

If you are missing the start of the comment, the / * , then you may get odd errors.

#7

Maybe it's that the comments say connected to pins 2, 3 & 4 but the sketch actually uses 8, 11 & 12.

#8

MrMcChicken: I have wired it up like in this tutorial: http://www.arduino.cc/en/Tutorial/ShiftOut

This one works: http://arduino.cc/en/Tutorial/ShftOut11

This one not: http://arduino.cc/en/Tutorial/ShftOut12

The third sketch takes serial input and uses it to light the LEDs. Are you inputting anything into the serial console? If not it won't do much.

#9