xpress_embedo
Advanced Member level 4
Hello!!! I have to display the Scrolling message on to the Led Matrix..
I have to connect 4-Led Matrix. I am using 74HC595 Serial to Parallel Converter.
Firstly i am checking only single matrix:-
Here is my circuit diagram
I display ARUN SHARMA in scrolling fashion on led matrix.
Its working fine in Protesu but not working properly in real hardware.
Have a look at this video:-
https://www.youtube.com/watch?v=BFnZL...ature=youtu.be
Can any one tell me why such display is coming.
What i thought is that Current in not sinking properly i am using ULN2803 for sinking.
I don't know how to solve this problem.
NOTE:-
I used 220ohm resistor for limiting current when connecting 74HC595 with Led Matrix
The video shown above is the result of that.
When i used 10K resistance the display is very light and is not visible properly.
Any Suggestion Please.
I have to connect 4-Led Matrix. I am using 74HC595 Serial to Parallel Converter.
Firstly i am checking only single matrix:-
Here is my circuit diagram

I display ARUN SHARMA in scrolling fashion on led matrix.
Its working fine in Protesu but not working properly in real hardware.
Have a look at this video:-
https://www.youtube.com/watch?v=BFnZL...ature=youtu.be
Can any one tell me why such display is coming.
What i thought is that Current in not sinking properly i am using ULN2803 for sinking.
I don't know how to solve this problem.
NOTE:-
I used 220ohm resistor for limiting current when connecting 74HC595 with Led Matrix
The video shown above is the result of that.
When i used 10K resistance the display is very light and is not visible properly.
Any Suggestion Please.