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Rain Detector
Last Updated on: Monday, October 03, 2011 06:07 PM


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Rain Alarm -  This circuit consumes no current until moisture is detected on the rain plate. 
Rain Alarm -  This circuit gives out an alarm when its sensor is wetted by water. A 555 astable multivibrator is used here which gives a tone of about 1kHz upon detecting water. The sensor when wetted by water completes the circuit and makes the 555 oscillate at about 1kHz. [Radioland.nt.au]
Rain Detector (Aaron Cake) -  This circuit 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.  (circuit / design added 8/03)


 

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