Hello,
first of all, thanks so much for your response. second of all, i'm pretty sure that i've sent 8n1 data packets. i've actually checked the output signal via the oscilloscope. now my questions are:
1) you say that i need to send the packet 5 or 6 times to be able to see it, i put it in the while loop, so i expect it to keep buzzing forever. am i correct?
2) since it would buz for 150ms, i should hear a fast buzz, correct?
thanks a million for the help!