ESP8266/WS2812: Difference between revisions
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Using LED strips with ESP8266 | Using LED strips with ESP8266 | ||
Overview of an easy to use setup for connecting WS2812b LED strips with esp8266's, ideally using the [[ESP8266#Arduino_IDE]] for dev. There are various links below on different libraries, approaches and projects of doing such. | |||
A fairly in depth look at the particulars of these LEDs and in particular how the data protocol works can be found here https://cpldcpu.wordpress.com/2014/01/14/light_ws2812-library-v2-0-part-i-understanding-the-ws2812/ | |||
== I2S == | |||
This seems to be the most promising approach, using the specific architecture and optimizations available on the chip. Originally developed by cnlohr, JoDaNl has since made a [[ESP8266#Arduino_IDE]] friendly version available, that looks to be a work in progress, it is thus far functional. | |||
* https://github.com/JoDaNl/esp8266_ws2812_i2s | |||
* https://github.com/cnlohr/esp8266ws2812i2s | |||
== UART == | |||
The NeoPixelBus was originally developed for use with Arduino hardware, and has since added support for the esp8266. Specifically there is a UART driven branch, while this version does work with the current version of the Arduino IDE (1.6.5) it is unclear as to how well this implementation functions overall and what the trade offs are. One advantage of this version however, is that you can use any GPIO pin, and conceivably multiple pins/strips as well. | |||
Installation instructions are provided on the github page. The example code seemed to be a bit glitchy, below is a functional simple starter sketch. | |||
* https://github.com/Makuna/NeoPixelBus/tree/UartDriven | |||
<pre> | |||
...please stanbdy | |||
</pre> | |||
== Resources == | |||
* http://tech.scargill.net/esp8266-ws2812b-leds-on-a-plate/ | * http://tech.scargill.net/esp8266-ws2812b-leds-on-a-plate/ | ||
* http://pance.mk/index.php/wifi-light-with-esp8266-and-arduino-code/ | * http://pance.mk/index.php/wifi-light-with-esp8266-and-arduino-code/ | ||
* https://github.com/einsteinx2/ESP8266 | * https://github.com/einsteinx2/ESP8266 | ||
Revision as of 18:49, 1 November 2015
Using LED strips with ESP8266
Overview of an easy to use setup for connecting WS2812b LED strips with esp8266's, ideally using the ESP8266#Arduino_IDE for dev. There are various links below on different libraries, approaches and projects of doing such.
A fairly in depth look at the particulars of these LEDs and in particular how the data protocol works can be found here https://cpldcpu.wordpress.com/2014/01/14/light_ws2812-library-v2-0-part-i-understanding-the-ws2812/
I2S
This seems to be the most promising approach, using the specific architecture and optimizations available on the chip. Originally developed by cnlohr, JoDaNl has since made a ESP8266#Arduino_IDE friendly version available, that looks to be a work in progress, it is thus far functional.
UART
The NeoPixelBus was originally developed for use with Arduino hardware, and has since added support for the esp8266. Specifically there is a UART driven branch, while this version does work with the current version of the Arduino IDE (1.6.5) it is unclear as to how well this implementation functions overall and what the trade offs are. One advantage of this version however, is that you can use any GPIO pin, and conceivably multiple pins/strips as well.
Installation instructions are provided on the github page. The example code seemed to be a bit glitchy, below is a functional simple starter sketch.
...please stanbdy