Home automation with openHAB using RPI2, OLA and a DMX controller ... solution?

Hello guys,

(watch this video for a desciption of my problem: https://youtu.be/dQrUNlLq4Us)

I have almost successfully completed my home automation setup using

  • RPI2
  • openHAB
  • OLA
  • UART native DMX interface
  • 30 channel DMX controller

OLA is working, but when changing colors from within openHAB there is always a delay of 30 seconds or so. Messages are sent/received immediately to/from OLA but it seems like OLA is not sending the commands to the DMX controller - only after a while.
This is a very strange behavior and i am not very familiar with OLA/DMX.
Can someone give me a hint how to solve this problem?

I think i solved my problems.
The DMX controller seems to be buggy - not receiving all messages.
Read more here: