I bought one of these keys 16x8 led boards a while back but couldnt get it working. Well a lie i couldnt get both screens working.
So tonight whilst looking for something different I found this board and decided to give it another try. On googling i kept finding arduino set ups which wasnt what i wanted and after using git clone https://github.com/rm-hull/max7219.git i searched for projects which used mr hulls code and came across one which pointed me to another github repo.
So here we go:
First enable SPI in sudo raspi-config (look in advanced menu)
sudo git clone https://github.com/leon-anavi/raspberrypi-matrix-led-max7219
sudo python setup.py install
There we go. Some good example codes there and after some playing around i managed to get it to display the time.