Connect NeoPixel to Pico Explorer

Support
1

I wish to control a neo pixel strip Flexible RGB LED Strip (NeoPixel/WS2812/SK6812 compatible) - Pimoroni from a Pico Explorer. There are a few things I am uncertain about.

  1. Do I need any terminators for the neopixel strip or can I just leave the unconnected end open
  2. If I add a strip connector LED Strip Connector Cable - Pimoroni, I’m assuming that I can just connect it to the GPIO on the PICO
  3. Do I need anything else?
2

I’d be careful which pin you use for power. I’d say your going to want to use VBUS, and draw power right from the USB power supply. The 3.3V out pin has a current limit.
If you have a long strip with lots of LED’s, your going to want a beefy power supply to supply enough current to power them.

3

Noted the point about power.

I’ve been groping round the internet - still can’t find any information about whether I need terminators. Maybe I’m using the wrong search words.

4

This may help figure that out.
The Magic of NeoPixels | Adafruit NeoPixel Überguide | Adafruit Learning System

5

I do not use any terminators with Neopixels. I’ve got a 1 metre - 30 pixel strip and use an external power supply. Do not forget the join the GND on the strip to the GND on the Pico. Works very well.
Have fun.

1 Like
6

Thank you - I can now make up my shopping list.

7

Have you got it working? There is now a Neopixel library included within MicroPython which covers both Neopixels and Dotstars.

NeoPixel and APA106 driver

Quick reference for the RP2 — MicroPython latest documentation