hi hi, so i started up with physical stuffs and not long after I managed to burn a USB diode of my elegoo nano
I basically split a led strip for testing and soldered the cables, it was running fine using this code at 255 brightness for over 5 minutes and suddenly the usb diode went into smoke
what did I do wrong and how can i get this working?
I would like to connect multiple strips in parallel in this manner
You tried to use your nano as a power supply.
You need a separate power supply for the LED strips.
The 5V regulator is probably also burnt out
Thank you for your response!
If I were to use one of these power supply modules, would it solve the issue?
I would then have the 5v and ground coming from the power supply module and connecting it directly to the led strip and provide the data in from the nano?
It might work but you may also burn it out.
First we need to determine how much current your LEDs need.
How many strips?
How many Leds per strip?
it would be 3 strips of 60 leds each using the same effect, it wouldn't have all the leds active at the same time, at most would have 70% of the strip lit up with a chasing effect
If it is at full brightness and white, then each LED will draw 0.06A
0.06 x 60 per strip = 3.6A
For 3 strips, that's 3.6 x 3 = 10.8 Amps, WOW!
If only 70% are lit that's 0.7 x 10.8 = 7.6A, still WOW!
If you just used only red, green or blue it would be only 0.02A per LED, so the total would be 7.6/3 = 2.53A
Just to be sure, I would use a 5V @ 5A supply but the bigger the better.
You probably need to buy a new UNO
love you, thank you for all the details <3
When you use the separate supply, make sure that the LED strips grounds (black wires) are connected to BOTH the power supply AND arduino GND.
I will do so <3
Can only give it a try during the weekend unfortunately but you have helped me a lot, I appreciate you much
No problem.
Have a nice day
You probably have burned the USB backflow diode of your Elegoo nano. It can be found on the back of the board, near the USB socket. A $0.20 Schottky diode could restore full functionality.
Your board will likely still be usable without that diode if you also connect the 5volt LED strip supply to the 5volt pin of the Elegoo Nano.
You should only follow the tutorials that include a resistor inline with the data input of the LED strip and use an electrolytic cap across the supply pins. Ignore any tutorial without it.
Leo..
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