Using the level shifter shown I see 5V for 3.3V input and around 80mV for ground.
Assuming that’s ok (is it?) I’m trying to run some 2812 addressable leds but having no luck .
import board import neopixel pixels = neopixel.NeoPixel(board.D18, 10) pixels = (255, 0, 0) pixels = (255, 255, 0)
I connect my raspi physical pin 12 (gpio18) to the level shifter and from that to the middle D0 line of the leds and bubkes. The leds are getting 5V ok and middle line is generally showing 0V (didnt try on scope) . anyone with some clues?
For instance is setting the correct length of strip (10 in the code above) mandatory? My strip is rolled up and I have no idea how many leds there actually are…