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Multiple LED strips and external power supply
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Multiple LED strips and external power supply

by ranmarin on Thu Sep 16, 2021 11:15 pm

I just want to know if this is the correct way to connect an Arduino UNO and 2 LED strips using an external power supply only (no USB).

Im using:
Arduino UNO
2 x LED strips are Adafruit Neopixel (60 LED each)
external power supply 5V, 3A
Attachments
multiple LED strips external power.jpg
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ranmarin
 
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Re: Multiple LED strips and external power supply

by dastels on Fri Sep 17, 2021 7:40 am

Vin is specced at 6v being the lowest since it drives the 5v regulator.

I would recommend using a standard 9v power supply for the UNO, and the high power 5v supply for the strips. Make sure the grounds (and not the power) are connected between the strips and the UNO.

Dave

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