I'm using the latest versions of micropython stable edition, esp32-idf3-20191220-v1.12.bin, and it seems there is a problem with the neopixel implementation on the M5 Atom.
When I run the following program, there are random errors in the display of the pixels.
from machine import Pin, lightsleep from neopixel import NeoPixel np = NeoPixel(Pin(27),25) black = (0,0,0) while True: np.fill(black) lightsleep(10) np.write()
From other places I hear this might be a problem with the power supply to the neopixel array, and might disappear if I supplied external voltage lower than 4.7V, because there is a problem with the voltage range on USB. That might work, it might not... but I wonder if there is a better solution, or a product modification, that might fix this?