ESP8266/ESP32 neopixel 16x16 display drive

All ESP8266 boards running MicroPython.
Official boards are the Adafruit Huzzah and Feather boards.
Target audience: MicroPython users with an ESP8266 board.
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shaoziyang
Posts: 272
Joined: Sun Apr 17, 2016 1:55 pm

ESP8266/ESP32 neopixel 16x16 display drive

Post by shaoziyang » Tue Feb 13, 2018 4:33 pm

ESP8266/ESP32 neopixel 16x16 ws2812 display drive.
16x16.gif
16x16.gif (149.2 KiB) Viewed 601 times
https://github.com/shaoziyang/mpy-lib/t ... /neo_16x16

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fdushin
Posts: 32
Joined: Thu Jul 21, 2016 5:38 pm

Re: ESP8266/ESP32 neopixel 16x16 display drive

Post by fdushin » Wed Feb 14, 2018 7:30 pm

Cool.

I made a night/morning/wakeup light using an array of 9 neopixels (hand-soldered).

Code is at https://github.com/fadushin/esp8266/tre ... on/neolamp

Observations:
  • I had to power the Neopixels off 3.3v, on account of a large voltage difference between the 5v power supply and the 3.3v data channel [1]
  • I am crunched for memory on an ESP8266, even with all my frozen byte code! Any new features I add will basically require an ESP32.
I will post a blog about this, once I get some free time (never).

[1] https://ben.artins.org/electronics/glitchy-neopixels/

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