I am currently trying to send the data that is a string to BOLT from arduino using Serial communication. The existing discussion on forum discuss about the data transmission from BOLT to arduino but I need the exact opposite of it…
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This explains in detail the receiving and sending of serial data from an arduino. Hope it helps. 
Good luck
http://www.engineersgarage.com/embedded\arduino\how-to-receive-and-send-serial-data-using-arduino