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Arduino Nano LED Display
Isolating circuits from your arduino with optocouplers
can i use an arduino uno r3?
I know this might sound stupid but could this happen if I cabled the display the wrong way around? sorry for all the questions. I am learning and this project is the most complicated I have done for now... Thanks Len61
Checked!! it is 200 ohms. when I changed some of the program it managed to get the leds to change but all I get is giberish...
yes I beleive it is exactly the same. I've added a picture to show you. In the photo you can't see a difference in the lighting but when I run the program you can see it working but only very slightly
I followed the connections you made and checked them. All I can think of is that the internal wirering of my display is different so I would need a different programing unfortunatly I don't think I will be able to re-use your program as I am still learning Arduino. but thankyou very much for your input and help.
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