LEDs talk about LEDs
Jos van Bakel
Created: 2022-06-07 Tue 22:03
About me
- NERD
- Software developer at Spindle
- Currently working on PWA SIP phone
- Electronics hobbyist
- Love LEDs
<3 LEDs
Action Reaction v1
Action Reaction v1
Action Reaction v1
Action Reaction v2
Action Reaction v2
Barrelchallenge
Barrelchallenge
LED table
LED table
LED table
Dogs
NeoPixels
A.K.A. WS2812, WS2811 or SK6812
What is it
- Driving lots of RGB leds used to be "hard"
- .. not anymore with the WS2812 LED (NeoPixel)
- RGB LED with integrated IC
- Single wire protocol
- Individually addressable
- Cheap (~30$ for strip of 300)
What is it?
How to drive it?
How to drive it?
With a (micro)controller:
- Arduino
- ESP8266/ESP32
- Raspberry Pi
- lots of other MCU's
Javascript?
MongooseOS
Embedded "OS" for ESP8266 and ESP322 (and more).
ESP8266
- Dirt cheap (2-5$)
- WiFi
- 80/160MHz
- up to 16M flash
and runs Javascript!
mJS implements a strict subset of ES6:
- Any valid mJS code is a valid ES6 code.
- Any valid ES6 code is not necessarily a valid mJS code.
