Hi
I am wondering if I can use GPIO 13 for data and 15 for clk?
In a lot of comments I read always GPIO1&2
I am using a d1 mini pro (esp8266) and WLED v0.13v3 and my led wount light up.
Do I have to ad resistor for pull up or PULL down?
Thx
edstobi
This may help you out. D1 mini, WS2801, WLED
The KB also says this: * WS2801 (uses gpio0 and 2). If that is still accurate I would assume 0 would be for clk. FAQ - WLED Project
No. GPIO15 is CS (chip select, 14 is SCLK)
You can safely use MOSI (GPIO13) & CLK (GPIO14) for SPI based chipsets (WS2801). This is also the proper way to use those chipsets and get the most out of ESP8266.
As for resistors that depend on line characteristics. Consult @Quindor 's articles.