IIC & WS2812b on RPi Pico

[bublinak]

Hello,
I would like to use MakeCode with RPi pico. I tried it at home and it works, but I can't figure out how to work with WS2812b led strips, or just I2C. Is it even supported? I would like to use PXT with RPi Pico with few kids as IoT project and this looks like the best way to do it, but I can't afford to buy micro:bit modules for all of them.
Thans for answer and sorry for bothering you.

[bublinak]

Figured it out - tere are blocks to use IIC or SPI, but not to assign in to any pin. Hovewer, can be at least done with custom code

[bublinak]

Another update - it still doesn't work. SPI doesn't work too... It's active (IIC), but does nothing...