Raspberry Pi Pico with 24 neopixel ring

CircuitPython on hardware including Adafruit's boards, and CircuitPython libraries using Blinka on host computers.

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enauman
 
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Raspberry Pi Pico with 24 neopixel ring

Post by enauman »

I'm following the Adafruit guide to using neopixels with a Raspberry Pi Pico board and having very inconsistent performance. I'm just doing simple things like filling with different colors and changing brightness and more often than not only one neopixel will light up, sometimes several light up but random colors, and sometimes they all light up properly. I've tried different boards and different neopixel rings with the same results.

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dastels
 
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Re: Raspberry Pi Pico with 24 neopixel ring

Post by dastels »

It strikes me as odd that the NeoPixels are powered by 5v when the Pico uses 3.3v logic levels. Have you tried powering the ring from 3.3v? Or using a level shifter as described at https://learn.adafruit.com/adafruit-neo ... ogic-level.

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enauman
 
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Re: Raspberry Pi Pico with 24 neopixel ring

Post by enauman »

Awesome, the neopixel works properly on 3.3V. Thank you!

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