Hi Kevin, Tell us how you went about doing collision detection. Thanks. John Dammeyer Wireless CAN with the CANRF module. http://www.autoartisans.com/documents/canrf_prod_announcement.pdf Automation Artisans Inc. Ph. 1 250 544 4950 > -----Original Message----- > From: pic microcontroller discussion list > [mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Kevin Olalde > Sent: Monday, May 13, 2002 12:17 PM > To: PICLIST@MITVMA.MIT.EDU > Subject: Re: [EE]: RF modules > > > You may want to check out: > > http://www.linxtechnologies.com/ldocs/f_applic.html > > I've already gone down the path of creating simple data links > between laipac's > 433Mhz modules. Works well, multiple nodes, machester > encoding, simple > collision detaction, stuff like that. > > Then I read the above document about FCC regulations. Seems > that my application > is non-compliant (I was transmitting temp/time and other > general home automation > information). > > It seems as though the 900MHz range is better (in that it seems less > restricted), but too expensive for my hobbying around needs. > > Kevin > > G Brigley wrote: > > > > Thanks everyone, > > > > I hadn't heard of Laipac. Their low-end modules are pretty > competitive, > > and their $27 900MHz transceivers seem pretty attractive too. > > > > I'm not sure now which way to go. > > > > I get the impression that the 315 and 433 MHz modules are > usually used for > > "Press a button, close a relay" type applications. Maybe > it's not worth > > trying to coax a multipoint data network out of them, even > if throughput > > requirements are low. If I did go this route, would I be > able to control > > a seperate receiver and transmitter with a pic, or should I > be looking > > only at integrated transceivers? > > > > I might yet switch to 900MHz. The extra range could come > in handy. And > > maybe there'd be app notes more similar to what I'm doing. > > > > Greg > > > > On Mon, 13 May 2002, David P. Harris wrote: > > > > > Hi- > > > I have used the 433MHz pairs. Work quite well. They > also have some 916 > > > MHz pairs, and some transievers. Here's their pricelist, in US$: > > > > > > LP link 900 931.9375Mhz POCSAG Receiver 25.00 > > > LP link xxx Customer made freq. 140 932Mhz POCSAG Receiver 25.00 > > > RF900CLP Base 900MHz Voice transceiver 40ch Base 5V 12.00 > > > RF900CLP Remote 900MHz Voice Transceiver 40ch Remote 3.6V 12.00 > > > RF900DV Base 900MHz Data & Voice Transceiver 16ch Base > @28.8K 27.00 > > > RF900DV Remote 900MHz Data & Voice Transceiver 16ch > Remote @28.8K 27.00 > > > RF2400DV Base 2.4Ghz Data & Voice Transceiver 16ch Base > @28.8K 31.00 > > > RF2400DV Remote 2.4Ghz Data & Voice Transceiver 16ch > Remote @28.8K 31.00 > > > CCD-52 w/mic + Rx Complete set of 2.4Ghz CCD w/mic, Rx > video/audio, batt. > > > 220.00 > > > CCD-52 w/o mic + Rx Complete set of 2.4Ghz CCD w/o mic,Rx > > > video/audio,batt. 210.00 > > > CCD-52 w/mic CCD 2.4Ghz CCD color w/mic ( avail. Freq. > 2412/32/52/72) > > > 140.00 > > > CCD-51 w/mic CCD 2.4Ghz CCD color w/mic ( avail. Freq. > 2412/32/52/72) > > > 136.00 > > > TLP315 RF ASK Transmitter at 315Mhz 4.80 > > > TLP315A RF ASK Transmitter at 315Mhz ( Smaller ) 4.80 > > > TLP418 RF ASK Transmitter at 418Mhz 4.80 > > > TLP418A RF ASK Transmitter at 418Mhz ( Smaller ) 4.80 > > > TLP433.92 RF ASK Transmitter at 433.92Mhz 4.80 > > > TLP433.92A RF ASK Transmitter at 433.92Mhz ( Smaller ) 4.80 > > > TLP916-ASK RF ASK Transmitter at 916.5Mhz 7.00 > > > TLP916-FSK RF FSK Transmitter at 916.5Mhz 9.00 > > > RLP315 RF ASK Receiver at 315Mhz - LC Type 4.80 > > > RLP315A RF ASK Receiver at 315Mhz - SAW Type 9.50 > > > RLP418 RF ASK Receiver at 418Mhz - LC Type 4.80 > > > RLP418A RF ASK Receiver at 418Mhz - SAW Type 9.50 > > > RLP433.92 RF ASK Receiver at 433.92Mhz - LC Type 4.80 > > > RLP433.92A RF ASK Receiver at 433.92Mhz - SAW Type 9.50 > > > RLP916-ASK RF ASK Receiver at 916.5Mhz 13.00 > > > RLP916-FSK RF FSK Receiver at 916.5Mhz 14.00 > > > TLP4XX- 2W * RF FSK & FM Transmitter UHF 0.5 - 2 Watt 25.00 > > > > > > David > > > > > > Ann & David Scott wrote: > > > > > > > Maybe the Laipac modules will work for you? They're in Toronto. > > > > A receiver/transmitter pair is less than $10US. I've used these > > > > with success (garage door type application). > > > > > > > > I'm a bit puzzled why I haven't seen more on this list about > > > > these modules. They seem to be a useful item for their low > > > > cost. Can anyone comment? > > > > > > > > G Brigley wrote on 5/11/02 5:04 pm: > > > > >Hi, > > > > > > > > > >I'm designing a network of > > > > >devices that uses a shared > > > > >wireless medium.... > > > > > > > > -- > > > > http://www.piclist.com hint: The list server can filter > out subtopics > > > > (like ads or off topics) for you. See > http://www.piclist.com/#topics > > > > > > -- > > > > http://www.piclist.com hint: The list server can filter out subtopics > > > (like ads or off topics) for you. See > http://www.piclist.com/#topics > > > > > > > > > > -- > > > http://www.piclist.com hint: The list server can filter out subtopics > > (like ads or off topics) for you. See http://www.piclist.com/#topics > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics > > > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics