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#2581
Jeremy WilliamsJeremy Williams
Keymaster

Sorry for my absence. The level shifter is for the LEDs — and in the case of NeoPixels, it’s only for the data line (sorry I said clock and data). See here…

http://tinyurl.com/zmwhkoo

If you’re using a Teensy LC it has a level shifter built in for this exact purpose on the bottom row. It’s the pin that says “17 at VIN voltage.”

https://www.pjrc.com/teensy/teensyLC.html

I don’t know if this is the cause of your problem but it could be, and you’ll want to run the data through a level shifter to avoid problems regardless.