Hi all,
I want to introduce you a simple board from SmartTAG project that is fully software and hardware compatible with Arduino.
You can check it on http://www.deep.sk or support it on https://www.indiegogo.com/projects/smarttag-bluetooth-led-display/x/11548795#/story.
All documents about this project are downlodable for FREE !!!
If you like it share it 
Roman.