GSM call alarm is a device that will call a destination number via Siemens or Ericsson GSM phone (19200 bps RS232). It has 1 sensor input and another input - state (stanje). If state input is = 0V than the device is "active" and it monitors the sensor input. The device is deactivated when state pin is connected to Vcc (+). Sensor input is triggered by 0V.
In project file for download, you will find a JPG image that describes how to program the number you whish to be called when alarm occures. I hope you will find some use for this device, as I did - for my car.
When you put ON/OFF pin to GND, LED will blink fast for about 15sec. After that, it will blink
slow - meaning it is ready to detect SENS input. This will happen only after the phone is
properly initialized. You will now that it is initialized when yellow LED is always ON.
Everything takes time, so when you properly connect everything leave it for 3 minutes to
initialize. I have also uploaded flowchart in the original RAR file. IP: n/a
From on 03-03-2009 at 18:22:07
Hi trax. ive finished it... the yellow now blinks.. and when i hold the rx and tx or attached
it to phone's rx tx, it blinks rapidly but if i put the gnd it stops.. but the phone didn't
call... can i ask trax, if can u describe what will i see if it is truly functional? the red
led will blink? thanx trax...im sorry if i bother u...(= IP: n/a
From on 01-03-2009 at 11:01:34
ei trax... do u have a flowchart for this device? (= thanx a lot IP: n/a
Hi i used that pcb called gsm_call_alarm_new_ploc, and why second 4N35 from 4,5 and 6 pin only
one is connected. Only collector ?
Finally i give up. thanks for everything, i don't know what is the problem.Thanks bay. IP: n/a
Use the one in "gsm_call_alarm". That one is tested and works great. If you are
having problems, check you crystal, maybe it is not working. If you can't get the device
working, try connecting TX and RX the other way around (It should be connected like this: ALARM
RX with GSM TX, ALARM TX with GSM RX, ALARM GND with GSM GND). IP: n/a
From on 25-02-2009 at 20:18:44
Hi trax, it's me again... which PCB layout will i use? the one in folder
"gsm_call_alarm" or the one in "gsm_call_alarm_new_ploc"... because i tried
the one in "gsm_call_alarm" but the led does not light up...thanx trax IP: n/a
Ok Thanks but i check every wire connection pins 100 of times i do not know where is the
But without connected phone should alarm work? i mean if i touch on/off or sensor to GND,
because the alarm not respond again, the yellow diode is continuing to blinking?.Maybe it does
not work with siemens S45?.
Tanks again bye. IP: n/a