Cool man, thanx a lot, you and all the guys who answered were really really helpful.
Στις Wednesday 06 July 2011 15:34:30 ο/η Dale Kline έγραψε: > OK - now I understand. The relay driven by the computer is a very smart > "switch" which changes the condition of the MCT-100 loop, and causes the > Transmitter to send a signal to another Receiver. So if you wire the relay > connector block to the MCT-100 loop input, it will work fine. That part is > straightforward. I could not tell if the MCT-100 is current or voltage > driven, but it will work with the relay either way. > I'm not familiar with the zoneminder. I'll have to look into that. I wanted > to do some of that at home to let me know when someone drives into our > driveway. > BTW, I am a hardware person - soldering iron and that stuff. This software > is a challenge that I am trying to learn. I am one very small step above > absolute beginner with this FreeBSD code. But volts and amps and ohms, that > I understand. :-) > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Achilleas Mantzios > Sent: Wednesday, July 06, 2011 8:21 AM > To: Dale Kline > Cc: [email protected]; Chris Hill; Ian Smith; > [email protected] > Subject: Re: FreeBSD and controlling an alarm via relay > > Hello, not quite. > Here is the idea (which has roughly worked in the past but with > "peculiar"-exotic hardware (e.g. 14.4Kbps modem ) : > 1) FreBSD server runs zoneminder. > 2) A deamon polls zoneminder's sharedmem (IPC) to see if we have any kind of > alert > (motion detection) produced. (that means that we verify that some camera > detected unwanted motion) > 3) Upon motion detection within the above daemon a script is called which > sets some bits in some relay board > 4) this relay board closes a NO circuit or opens a NC circuit in MCT100 > 5) MCT100 talks directly to visonic powermax+ control panel and triggers a > burglar alarm > > I had the above idea working 2-3 years back, with the following differences > with regard to the above > a) a > http://www.visonic.com/Products/Wireless-Property-Protection/Door-window-contact-mct-302 > door/window > was used instead of the dedicated MCT-100 xmitter. MCT-302 had an additional > hard-wired input (NO/NC/EOL) which behaved > like a distinct zone with its own xmitter, pretty much like the MCT-100 does. > Problem with that was that the battery > went off too early and also the contact was completely damaged/malfunctioning > in the end. That is why i opted > for the more dedicated MCT-100 xmitter which is designed to do just that, (as > you said) sense for difference in current > in the circuit and transimt an event to the powermax+ central panel. > > b) instead of a dedicated-specialized relay board, i was utilizing an old > ZyXel modem, which i had connected in series > with the MCT-302 NC circuit. Normally the ZyXel allowed for current to pass > through the circuit. > when the zoneminder-polling daemon detected an unwanted motion detection it > run: > vm shell -l cuad1 -S offhook_onhook.pl > (vm comes with mgetty) > where offhook_onhook.pl looked like: > #!/usr/bin/perl > # > use Modem::Vgetty; > > my $v = new Modem::Vgetty; > > $v->device('DIALUP_LINE'); > $v->send("ATH1"); > sleep(2); > $v->send("ATH0"); > > This > $v->send("ATH1"); > sleep(2); > $v->send("ATH0"); > part seemed to do the trick just fine. > > Thing, is that i am thinking these days, of trying either to re-do the old > 1.23 zoneminder port for FreeBSD 8.2 > or join [email protected], in his effort to have a fully functioning > zoneminder 1.24 port with local bktr camera support. > Along with that, i want to get rid of the old "MCT-302/ZyXel model" way and > try something better and faster. > > That is the whole story, i hope i made it clear enough :) > > Στις Wednesday 06 July 2011 14:55:45 ο/η Dale Kline έγραψε: > > Hi, > > I guess I don't understand your application here. The Visonic is a battery > > operated UHF remote alarm transmitter, that looks at a wired loop for a > > change in condition (a door magnetic reed sensor, for example) and then it > > transmits an alert to a remote Radio Receiver (MCR-304) if that door opens > > or closes unexpectedly. The MCT100 has a three volt battery with an > > operating life of 45 - 50 months according to the spec. It does not need a > > voltage supply, nor would you want to turn it on and off during operation. > > The Relay boards, on the other hand, are capable of turning on and off the > > four or eight relays from your computer commands. The relays are capable > > of switching ANY AC or DC voltage, at a rated current (24 VDC OR 120 VAC @ > > 15 Amps and so on). The 5 volt @ 72ma rating is the voltage and current > > that the board must supply to make the relay close. > > The green terminal blocks then connect to a floodlight (for example) that > > would turn ON after the UHF Receiver that is listening to the MCT100 > > Transmitter indicates that someone has opened or closed the door mentioned > > in the first paragraph. > > Am I following what you want to do? > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of Achilleas Mantzios > > Sent: Wednesday, July 06, 2011 5:50 AM > > To: Ian Smith > > Cc: [email protected]; Chris Hill; [email protected] > > Subject: Re: FreeBSD and controlling an alarm via relay > > > > another thing that puzzles me is power. > > This board : > > http://www.ebay.co.uk/itm/USB-Eight-Channel-Relay-Board-RS232-Serial-Controlled-/110710333092?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item19c6d99ea4 > > needs VDC 12V supply > > while this one : > > http://www.ebay.co.uk/itm/USB-Four-4-Relay-Module-Board-Home-Automation-/180646300804?pt=LH_DefaultDomain_0&hash=item2a0f5bcc84 > > is self powered from USB. > > > > batteries do not come cheap, and having an extra AC/DC adaptor is not very > > good either ... > > > > another thing is the relay parameters, i see various figures : > > Relay parameters: 5V / 72mA, 15A/24VDC (120VAC), 10A/250VAC or > > Each switch 12VDC/15A or 240VAC/10A or > > Open (No) and Closed (NC) Contacts rated for voltages: 12VDC/15A; > > 24VDC/15A; 125VAC/15A; 250VAC/10A > > > > my specific application i want to drive is this wireless xmitter : > > http://www.visonic.com/Data/Uploads/MCT_100_Installer_Guide_English_DE2241U.pdf > > Should i assume my device that i want my relay to control will have voltage > > of 3V? > > > > for which Voltage/Ampere figures should i opt? are those figures crucial? > > > > thanx a lot > > > > Στις Wednesday 06 July 2011 11:03:14 ο/η Ian Smith έγραψε: > > > On Tue, 5 Jul 2011, Achilleas Mantzios wrote: > > > > �������� Tuesday 05 July 2011 16:10:59 ��������������: > > > > > On Mon, 4 Jul 2011, Achilleas Mantzios wrote: > > > > > > > > > > [snip] > > > > > > > > > > > I was thinking of some relay board (instead of the old modem), > > > > > > possibly ethernet controlled > > > > > > > > > > This box has relays and GPIO available via ethernet. It's probably > > > > > overkill for your application, but it's well made and easy to use: > > > > > > > > > > http://www.extron.com/product/product.aspx?id=ipltcr48&s=0 > > > > > > > > > > > > > That is too big for my application, thanx anyway. > > > > Most probably i'll go for something cheaper like this one > > > > > > > http://www.ebay.co.uk/itm/USB-Eight-Channel-Relay-Board-RS232-Serial-Controlled-/110710346488?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item19c6d9d2f8 > > > > > > These look quite well designed and built to me, reasonably priced new, > > > but check out the/a source site [1] for various models, 1- and 4-relay > > > boards too, or if you prefer, RS-232 serial rather than USB interface > > > for the 8-relay boards. There's also a simple parallel port to 8 TTL > > > outputs board (hi Tim!) and various other stuff. I'm tempted myself. > > > > > > [1] http://sigma-shop.com/category/4/relay-boards.html > > > [2] http://www.sigma-shop.com/page/12/manuals.html > > > > > > > Could i use the ucom driver to talk to the USB device like a normal > > > serial device, via /dev/cua*** ? > > > > The above link says one needs to talk to the relay with: > > > > 8 Data, 1 Stop, No Parity,Baud rate : 9600 > > > > and the commands look like: > > > > FF 01 00 (HEX) > > > > or > > > > 255 1 0 (DEC) > > > > > > > > could i be able to specify those over ucom? > > > > > > If so, great. If not and you have a serial port, the code will be the > > > same anyway, except the port used. I grabbed most of the manuals from > > > [2] and found the Linux software examples are all this one: > > > > > > ======= > > > Linux : > > > The USB-serial device is automatically detected and mapped to /dev/ > > > ttyUSB0 (or USB1 in case there is already a similar device). > > > My test script: (Thanks Julian!) > > > -------------------------------------------------------- > > > # cat relay.sh > > > while true > > > do > > > echo -e "\xFF\x00\x00" > /dev/ttyUSB0 ; sleep .1 > > > echo -e "\xFF\x00\x01" > /dev/ttyUSB0 ; sleep .1 > > > echo -e "\xFF\x00\x00" > /dev/ttyUSB0 ; sleep .1 > > > [..] > > > echo -e "\xFF\x01\x01" > /dev/ttyUSB0 ; sleep .1 > > > echo -e "\xFF\x02\x01" > /dev/ttyUSB0 ; sleep .1 > > > [..] > > > echo -e "\xFF\x07\x01" > /dev/ttyUSB0 ; sleep .1 > > > echo -e "\xFF\x08\x01" > /dev/ttyUSB0 ; sleep .1 > > > echo -e "\xFF\x01\x00" > /dev/ttyUSB0 ; sleep .1 > > > echo -e "\xFF\x02\x00" > /dev/ttyUSB0 ; sleep .1 > > > [..] > > > echo -e "\xFF\x07\x00" > /dev/ttyUSB0 ; sleep .1 > > > echo -e "\xFF\x08\x00" > /dev/ttyUSB0 ; sleep .1 > > > ======= > > > > > > If using sh[1] you might need to use \0377 instead of \xFF > > > > > > > do you know any application, perl library, utility or just a guide for > > > standard C serial port programming? > > > > > > Anything that can write bytes to a serial port - perl's overqualified :) > > > > > > [..] > > > > > > cheers, Ian > > > > > > > > > -- Achilleas Mantzios _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hardware To unsubscribe, send any mail to "[email protected]"
