Multiple LED strips and external power supply

General project help for Adafruit customers

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
ranmarin
 
Posts: 1
Joined: Thu Sep 16, 2021 11:13 pm

Multiple LED strips and external power supply

Post by ranmarin »

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
multiple LED strips external power.jpg (157.58 KiB) Viewed 58 times

User avatar
dastels
 
Posts: 15608
Joined: Tue Oct 20, 2015 3:22 pm

Re: Multiple LED strips and external power supply

Post by dastels »

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

Locked
Please be positive and constructive with your questions and comments.

Return to “General Project help”