rain detector
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yeshwanth
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#1
20-11-2009, 08:44 PM


pls send me details abt rain detector
i need details abt project and implimentation Rain Detector
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computer science crazy
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#2
22-11-2009, 01:56 PM

please see topicideashow-to-Rain-detector

where its posted
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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seminar surveyer
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#3
08-10-2010, 03:20 PM


Introduction

Rain detector will give you a heads-up the instant it starts to rain, hopefully giving you time to close windows and bring in possessions. The battery-powered circuit draws virtually no current when the sensor is dry and the current consumption is low when the buzzer is activated so a couple of AA cells will last a long time. Alternately, a molded power supply with a simple voltage regulator to drop the voltage to 3 volts could be used. The circuit is basically a handy flasher circuit that operates well on only 3 volts using ordinary silicon transistors. When the circuit is triggered, the buzzer is pulsed about once per second for a very short time, giving it a "dripping water" sound which seems appropriate. A slower, longer beep may be had by increasing the 1 uF capacitor. The 10 k resistor may be increased for a longer beep time without decreasing the beep rate but at some point the circuit will cease to function properly, depending on the gain of the transistors.


For more details, please visit
techlibelectronics/raindetectors.htm
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Guest
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#4
20-08-2012, 02:04 AM

i seriously nid info on rain detector pliz send mi the full report
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