Rain detector
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yeshwanth
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Posts: 13
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#1
20-11-2009, 08:43 PM


pls send me details abt Rain detector
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computer science crazy
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Posts: 3,048
Joined: Dec 2008
#2
22-11-2009, 01:55 PM

a rain detector can alarm you when a small drops of water fall on the setup; it will save you the trouble of looking out the window every second when you want to catch the start of a rain storm, or cover some water sensitive stuff on your backyard. The following schematics are simple, but they can give design ideas or serve as a part of a more complex circuit like a computer weather data collection system.And you can add somr more dedication to plot graph for rain availability,
see
here uses a sensor made of a small piece of etched PC board and a simple SCR circuit to detect rain and sound a buzzer. The SCR could also be used to activate a relay, turn on a lamp, or send a signal to a security system
[img]aaroncakecircuits/raindet.gif[/img]

R1


1


1K 1/4 W Resistor


R2


1


680 Ohm 1/4 W Resistor


D1


1


1N4001 Silicon Diode


BZ1


1


12V Buzzer


S1


1


SPST Switch


SCR1


1


C106B1 SCR


106CY

SENSOR


1


See Notes


MISC


1


Board, Wire, Case, PC Board (For Sensor)


or
see
techlibelectronics/raindetectors.htm
electronic-circuits-diagramsalarmsimages/alarmsckt4.shtml
cytiumhobby/rain.pdf
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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