Post by thread:X10 data n stuff

Many thanks for your thoughts people, but i would like to be able to transmit data a little further down the powerlines than just to the next pole transformer. Anyone know of a device able to do this? I have thought of:- - something along the lines of X10 - modem/telecom but its would be too expensive to pay for a line only to use it once a month.. - radio link ( 2.4 Ghz ) but this gets tricky to set up and it seems a shame to waste all the bandwidth just to send data @ 2400bps from a PIC any thoughts? spam_OUTRobTakeThisOuTwaikato.ac.nz

Read my earlier post on CEbus. The technology is spread spectrum over power line, but it has a physical layer spec. for RF transceivers too. If you go with 900 MHz spread spectrum tranceivers, you shouldn't have much of a problem setting them up. However, if you are only using it once a month, go with a two way pager or cell phone and run it into a pic. Research in motion has a great OEM pager board and it's communication protocol is only 1 or 2 kilobytes to implement. http://www.rim.com Craig > {Original Message removed}

> Many thanks for your thoughts people, but i would like to be able to > transmit data a little further down the powerlines than just to the next > pole transformer. Anyone know of a device able to do this? > > I have thought of:- > - something along the lines of X10 > - modem/telecom but its would be too expensive to pay for a line only to use > it once a month.. > - radio link ( 2.4 Ghz ) but this gets tricky to set up and it seems a shame > to waste all the bandwidth just to send data @ 2400bps from a PIC > > > any thoughts? > > .....RobKILLspam@spam@waikato.ac.nz > What about a pager, you can send limited info on message pager accounts and one is only charged for the call, no rentals. Ive toyed with the idea but never looked into the specifics. You can even buy "freedom"cell phones that are ony charged per call, no rental. _____________________________ Lance Allen Technical Officer Uni of Auckland Psych Dept New Zealand _____________________________

www.rim.net/ perhaps? -Adam Craig Lee wrote: {Quote hidden}> > Read my earlier post on CEbus. The technology is spread spectrum > over power line, but it has a physical layer spec. for RF transceivers > too. > > If you go with 900 MHz spread spectrum tranceivers, you shouldn't have > much of a problem setting them up. > > However, if you are only using it once a month, go with a two way pager > or cell phone and run it into a pic. Research in motion has a great > OEM pager board and it's communication protocol is only 1 or 2 kilobytes > to implement. http://www.rim.com > > Craig > > > {Original Message removed}

Can't connect to this website. -----Original Message----- From: Craig Lee <cleeKILLspamATTCANADA.NET> To: .....PICLISTKILLspam.....MITVMA.MIT.EDU <EraseMEPICLISTspam_OUTTakeThisOuTMITVMA.MIT.EDU> Date: Tuesday, August 10, 1999 5:23 PM Subject: Re: X10 data n stuff {Quote hidden}>Read my earlier post on CEbus. The technology is spread spectrum >over power line, but it has a physical layer spec. for RF transceivers >too. > >If you go with 900 MHz spread spectrum tranceivers, you shouldn't have >much of a problem setting them up. > >However, if you are only using it once a month, go with a two way pager >or cell phone and run it into a pic. Research in motion has a great >OEM pager board and it's communication protocol is only 1 or 2 kilobytes >to implement. http://www.rim.com > >Craig > > > >> -----Original Message----- >> From: pic microcontroller discussion list >> [PICLISTspam_OUTMITVMA.MIT.EDU]On Behalf Of Rob Bakker >> Sent: August 10, 1999 5:05 PM >> To: @spam@PICLISTKILLspamMITVMA.MIT.EDU >> Subject: X10 data n stuff >> >> >> Many thanks for your thoughts people, but i would like to be able to >> transmit data a little further down the powerlines than just to the next >> pole transformer. Anyone know of a device able to do this? >> >> I have thought of:- >> - something along the lines of X10 >> - modem/telecom but its would be too expensive to pay for a line >> only to use >> it once a month.. >> - radio link ( 2.4 Ghz ) but this gets tricky to set up and it >> seems a shame >> to waste all the bandwidth just to send data @ 2400bps from a PIC >> >> >> any thoughts? >> >> KILLspamRobKILLspamwaikato.ac.nz >> > >

Hello Rob, > - radio link ( 2.4 Ghz ) but this gets tricky to set up and > it seems a shame > to waste all the bandwidth just to send data @ 2400bps from a PIC > > > any thoughts? > > RemoveMERobTakeThisOuTwaikato.ac.nz > However, slower symbol rate = better signal to noise ration = (longer distance and/or more robust communications). I presume you are talking narrow band? Tom