Hello, Is this connection correct?
led strip is 5v, and power suply 5v.
only need 7a, so the power suply is 10a.
I feed the arduino with the USB port
I feed the led strip with the power suply
Also, I know I have to put a capacitor and a resistor.
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@leiker you will need to connect the ground from the power supply to the ground on the Arduino and also I advise reading this Adafruit guide.
So I take out another GND cable? Otherwise everything is fine?
Yes the ground is essential
Read the link I posted it mentions a resistor and a capacitor in circuit.
I have used small pixel strings without the resistor or the capacitor and had no issues but obviously Adafruit advise those components for a reason.
There will be voltage drop through the long-skinny traces in the LED strip so LEDs at the far-end may be dim or not work correctly.
Adafruit addresses this and recommends connecting power about every meter.
Thanks
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