Hi guys the one photo is my current schematic in my project right now

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1

Hi guys

the one photo is my current schematic in my project right now with 50 x 18 RGB LED STRIP , arduino is powered up by USB Cable in my laptop and controlling the RGB LED with External power supply

In another photo i want to use the another 5v and gnd of Power supply to power up my arduino and GSM module , is this right and safe ? hope you understand me thank you guys :slight_smile:

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Looks fine to me. You could also power the GSM module directly from the external power supply if that’s more convenient. Or if the GSM module needs more current then is safe to draw through the Arduino’s pin.
Make sure you actually measure the voltage from the external power supply with a multimeter to confirm what you’re getting.

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Which micro-controller are you using btw?

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thanks bro , I’m using Arduino Mega for flash memory size