Finally I managed to get the door bell to be connected to the computer!! and make a schematic from it! I used a arduino shield that a friend lent me to check the functioning and then made a small board using those prototyping boards! I'll upload a photo later on! I drew the schematic using http://draw.labs.autodesk.com/ADDraw/draw.html
It was difficult to find a nice tool to make a schematic using free software...
Now, each time someone rings my bell, an entry gets added to a database. Nothing else happens yet, but the plan is to get a ring tone (stereo!!), but I found out that the audio out of the server is not enough to make noise via a small un-amplified speaker, so I am now investigating the possibilities!
I hope the transistor is the correct one - the library at the site doesn't have that many!
2 comments:
No Alex, it's not the correct transistor, or the circuit is not correct. The Optocouplers I gave you are all NPN, the transistor you have is a PNP (arrow points to the N).
After a discussion with Joao, it appears that it is correct after all. The optocoupler is indeed a PNP. My circuit however, has an inverted output - it is high when noone is ringing and is pulled down when someone does...
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