After I enabled the SPI device on my Raspberry PI, I wanted to drive some WS2801 LED Modules. Thanks to Scott Gibson this was quite an easy task, his detailed Blog entry helped me alot.
My Raspberry PI setup looks like this:
I Installed PixelPi a “RGB Pixel Array Driver for the Raspberry Pi” written in Python.
I updated my PixelController Software so that PixelController can send out raw UDP packets. PixelPi can now accept those UDP packets and display its content. Here is an example how to start PixelPi:
1 2 3 4 5 6 7 8 | pi@raspberrypi ~/PixelPi $ sudo python pixelpi.py --chip WS2801 --num_leds 50 --refresh_rate 20 --mode pixelinvaders --udp-ip 192.168.111.25 Chip Type = WS2801 File Name = None Display Mode = pixelinvaders SPI Device Descriptor = /dev/spidev0.0 Refresh Rate = 20 Array Dimensions = 7x7 Start PixelInvaders listener 192.168.111.25:6803 |
Click here for a PixelController example config file for the UDP output.
Here is a (bad) image of the PixelController-PixelPi combo in action:
