Hi,
I have still a few boards (without components) available.
Yes, you can use other diodes than BAT54 (eg. BAV70 if this
is SMD), BAT54 is a schottkey diode with at low voltage drop.
For the transistors you can just use ordinary NPN or PNP small signal
transistors, except for the one on Output3. This should be a 5-600 mA
version able to power the siren.
I have developed the software a little bit further, and put in some more
functionalities (2 phone numbers updateable by SMS). This is intented to
use an alarm system, an dif you like I can mail the the hex code.
Ole
Hi there.hi guys im working with similar project, do i really need to use two pics for this project? sms based switching?
The schematic can be found on our blog in a post about this project (the link I posted).I need that circuit can you send me please?
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