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temperature controller can be used for -55 to +125 degree centi.It can be use with egg hatcher machine, chillers,air coller or fan and E.T.C.
3 relay shows 1 for heater one for fan then one for water.
This project can determine the security and attendance system by finger print sensor pc based.
Push button dimmer with lcd.
This circuit based on discrete ic's likee 74xx series.
This project is base on digital and auto system of lift on/off.
In this project we are using battery caharging by solar and they put on the tube well system.
In this circuit we are using sensor which count the motor RPM im digital form.