Using NeoPixels with Rock Pi S #NeoPixels #CircuitPython #Blinka

A user in the Radxa community wanted to know how to get NeoPixel (smart RGB LED strings) working with the Radxa Rock Pi S board with Python.

The CircuitPython Blinka compatibility layer provides CircuitPython-compatible support to the on-board Python environment.

The trick is to ensure the board’s SPI port is enabled. This post shows how.

Just add rk3308-spi-spidev and a new line param_spidev_spi_bus=2 thereafter.

Then you connect the NeoPixels 5V and ground accordingly as well as the data in pin to the Rock Pi S pin no. 19 (which supports SPI2_MOSI):
https://wiki.radxa.com/RockpiS/hardware/gpio#26-pin_Header_1_4

That’s it and running the neopixel_spi_simpletest.py 1 should confirm everything is working fine.

See this post for more.


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