Pin out Diagram of 74595, Circuit between 74595 and Bi-color LED (Part 2 of 4)

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Pin out Diagram of 74595

We had already seen the circuit for controlling four bi-color LEDs using arduino mega in my previous part.

Pin out diagram of 74595 is shown below.

Pin out of bi-color LED

Bi-color LEDs normally have three terminals. One is a common anode terminal and others are cathode terminals.

  • Middle terminal is the common anode terminal.
  • Other terminals are cathode terminals.

Circuit can be summarized as :

  • Pin 15 of 74595 is connected to the cathode terminal 1 of first bi-color LED.
  • Pin 1 of 74595 is connected to the cathode terminal 2 of first bi-color LED.
  • Pin 2 of 74595 is connected to the cathode terminal 1 of second bi-color LED.
  • Pin 3 of 74595 is connected to the cathode terminal 2 of second bi-color LED.
  • Pin 4 of 74595 is connected to the cathode terminal 1 of third bi-color LED.
  • Pin 5 of 74595 is connected to the cathode terminal 2 of third bi-color LED.
  • Pin 6 of 74595 is connected to the cathode terminal 1 of forth bi-color LED.
  • Pin 7 of 74595 is connected to the cathode terminal 2 of forth bi-color LED.
  • Pin 14 of 74595 is connected to the digital pin 12 of arduino mega.
  • Pin 12 of 74595 is connected to the digital pin 11 of arduino mega.
  • Pin 11 of 74595 is connected to the digital pin 10 of arduino mega.
  • Pin 16 and 10 of 74595 is connected to the positive terminal of 5V voltage source.
  • Pin 13 and 8 of 74595 is connected to the negative terminal of external voltage source.
  • Ground terminal of external voltage source and arduino mega should be interconnected.

Continued in Next Part (Part 3) >>>>

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paulpp644
A deep electronic enthusiast who spent most of my time for electronic experiments. I am also interested in publishing my experiments in my blog for helping other electronics enthusiasts.