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Friday, 12 September 2014

Circuit Between 74595 and Arduino Mega to Control 16*8 LED Matrix (Part 3 of 13)

by realfinetime  |  in LED Matrix at  02:25

<<<<  Read previous part (Part 2)

Connection between cathode pins of LED matrices and 3rd 74595

         From the circuit, it is clear that cathode terminals of both LED MATRICES are connected to the Q0-Q7 pins of 3rd 74595.


Connection between 74595 ICs and Arduino Mega

Connection between 74595 ICs and arduino mega is given below.
Connections can be summarized as:
DS (pin 14) of 1st 74595 is connected to the 13th digital pin of Arduino mega.
SHCP (pin 11) of 1st and 2nd 74595 is connected to the 12th digital pin of Arduino mega.
STCP (pin 12) of 1st and 2nd 74595 is connected to the 11th digital pin of Arduino mega.
Q7' (pin 9) of 1st 74595 is connected to the DS (pin 14) of 2nd 74595.

DS (pin 14) of 3rd 74595 is connected to the 10th digital pin of Arduino mega.
SHCP (pin 11) of 3rd 74595 is connected to the 9th digital pin of Arduino mega.
STCP (pin 12) of 3rd 74595 is connected to the 8th digital pin of Arduino mega.

Gnd pin of 74595 ICs should be connected to the Gnd pin of Arduino mega.
OE (pin 13) of all 74595 ICs should be connected to ground.
MR (pin 10) of all 74595 ICs should be connected to Vcc.

Continued in Next Part (Part 4)  >>>>

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IMPORTANT NOTICE

All the circuits, published in this blog is only after testing and getting proper results in my private lab. When you try these circuits, you should check the supply voltage, polarity of components, presence of childrens nearby and shorts in the circuits. This website will not be responsible for any harm happened to you or your components caused by your carelessness.

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