Automatic water pump controller using 555 timer

This is an Automatic water pump controller circuit diagram using an NE555 timer. In the countryside, water is very important. The most to use the groundwater to dig as a pond, and for the convenience, They often use the pump automatically But waste a lot of electricity. Some homes have a large water tank on high, then Pumping up the put on hold. When you want to use, just to turn on the tap at the bottom. It does not require all-time electricity and also high water pressure.

Water tank system. Convenient and savings, but …
But I have to control the water level in the tank is fixed, is water must not out or overflow, which is a waste of time look at the pump. I have the ideal to create this automatic water pump controller project.

Simple automatic water level controller circuit using IC555 timer


Automatic water pump controller circuit diagram

Main ideas
When the water a full tank. This circuit controls the pump stopped working. Then we use the water out. The pump will start running again. This manner is ever automatically

Roughly description.
The IC1 No. 555 works in the astable multivibrators. For signal generators to activate the transistor, which is used to drive relays – off the pump.
Assuming flood level to the test point C. (Will has flooded all the time.) But the water level has not reached the test point B. These parts to be IC1, Q1, Q2 (2SD882) and RY1 will not work. So the contacts of RY1a and RY1b be connected to the terminal NC, the 220 volt AC electricity can be supplied to the pump. The waters pump start to pump water into the tank.

Circuit parts
Q1___________NIO is BC547___45V 100mA NPN Transistor
Q2___________2SD882___30V 3A NPN Transistor
D1___________DRL is 1N4148 75V 150mA Diodes
D1-D5__OID is diode 1A 50V to 1A 1,000V__No.1N4001,1N4002 to 1N4007
RY1__________Relay 2 contracts 12V
R1,R5_________1K___1/4W Resistor
R2____________56 ohm ___1/4W Resistor
R3____________10 ohm ___1/4W Resistor
R4____________100K ___1/4W Resistor
C1____________0.1uF 63V Polyester Capacitor
C2____________0.01uF 63V Polyester Capacitor
C3,C4____________4.7uF 25V Electrolytic Capacitors

Until the water level increases to the sensor point A, As a result, the sensor point A is connected to the test point C. The IC1 works and pulse signal generator. Then through diodes, D1 and C4 both to be the DC voltage to the bias current to Q1, After the Q1 and Q2 (2SD882) conducts current, As a result, a current flows through the coil of RY1. So the two sets of the contacts (RY1) move on the poles NO, the pump will stop working.

The contacts of the RY1b sets will connect both test point A – B together. Although the water level drops below the test point A, the pump still does not work. Until water levels drop below the detector B. Water pumps, therefore, started again. Which will circle as continue?

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