Hi, I have two LED-Strip, one is connected to an arduino MEGA and the other one is connected to an arduino UNO.
When I try to play both LED-Strip at the same time, something's not working, one of them starts blinking and the other doesn't do anything at all.
I already checked the connections between arduinos and the code for each arduino can be uploaded without any problems. What could it be?
Could it be a power issue?
I'm not sure about it, because I have a power source for each LED-Strip.
Right now, both of the LED-Strips are working, but it seems like the arduinos are not communicating with each other...
When I connect the first power source, which belongs to the first LED-Strip, the second LED-Strip starts blinking while doing its code
Why would they need to do that?
The thing is that one arduino has its LED-Strip turned down while the second one has to do a sequence. When the first arduino sends a message, it starts to do a sequence the first LED-Strip and the second one has to stop.
I have a question, ¿the power source for each arduino has to be 5V or 12V?
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That is not a good reason to use 2 Arduinos. Use 1 Arduino and the problem of communicating between Arduinos is gone.
Uno and Mega are 5V devices and need a 5V supply. They have built-in regulators which allow them to run from a higher voltage supply such as 12V, but these regulators cannot power 5V led strips.
For 5V led strips, get a 5V PSU with sufficient current for your strips. This PSU can supply the Arduino also through its 5V pin (which bypasses the built-in regulator).
For 12V strips, use a 12V PSU. This PSU can supply the Arduino though it's Vin pin, but take care not to draw more than a small current from the Arduino's 5V pin for other components.
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