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Connecting 2 GND wires to Trinket
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Connecting 2 GND wires to Trinket

by sahteck on Wed May 06, 2020 12:45 pm

In my final project, I'm trying to use two 30 NeoPixel strips, one data pin to #0 and the other to #1. Would it be possible to wire the grounds of both strips to each other, then to the Trinket ground pin? Or do I have to do some wire splicing or something?

Similar question for the 5V lines as well, since when I prototyped with the Arduino Uno I powered the strips externally (barrel power jack to a portable charger) and omitted connecting the 5V lines to the Uno and it worked well. Do I even have to connect the 5V lines to the Trinket in this case?

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Re: Connecting 2 GND wires to Trinket

by adafruit_support_bill on Wed May 06, 2020 12:57 pm

Would it be possible to wire the grounds of both strips to each other, then to the Trinket ground pin? Or do I have to do some wire splicing or something?

Yes, it is possible to do that.
Similar question for the 5V lines as well, since when I prototyped with the Arduino Uno I powered the strips externally (barrel power jack to a portable charger) and omitted connecting the 5V lines to the Uno and it worked well. Do I even have to connect the 5V lines to the Trinket in this case?

You do not need a 5v connection between the Trinket and the strips if they are separately powered.

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Re: Connecting 2 GND wires to Trinket

by sahteck on Wed May 06, 2020 1:10 pm

Thanks!!!

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Please be positive and constructive with your questions and comments.