Simple Water Level Alarm

In the bathrooms, sometimes i often open the tap water to fill the water tank and leave it to do other activities. But i often forgot to close tap water, After that, the water is spilled to much. Because water direct flow from electric pump, of course it also make a wasteful electricity. 

Not all water filling in the bathroom using automatic valves that will close when the water is full. One easy solution is install a water level alarm. The alarm will buzzing to people to tell that the tub is full. Water level alarm can be assembled with very easy. And then some of the main components that used are :

• 9v battery
• Piezo buzzer
• Transistor c 9014
• 470 ohm resistor

This is schematic of water level alarm that I was use, This is so simple and just need only 4 component electronics to make it work.

This is water level alarm that I was build. I soldering all component on PCB. I use two copper for water sensor. I got copper from piece of NYM cable. when both copper exposed to water, the alarm will sounding “ Tiiiiit……………”

this is a picture of the installation the circuit in the bathroom, both of copper can adjusted to level water which desired.

Why use batteries? This is the best way to avoid electrical line hazards. Of course safety is the main reason.  I use 9 Volt battery because a piezo buzzer that I used works on voltages from 6 to 9 volt. At a voltage 9 Volts, piezo buzzer may be ringing very loudly.

For more detail, please watch this video and don’t forget to leave your comment. Thank you for visiting my blog.