--> DS1820 Temperature Controller

This project displays the temperature on an LCD display with an resolution of 0.06degrees. DS1820 is used for sensing the temperature. It can measure temperature range from -55deg to +125deg. But i take care of only the possitive temperature.
There are 3 switches to change the alarm temperature, the user can increment the Alarm temperature by pressing the UP button and they can decrease the Alarm temperature by pressing the Down button. The Enter button is used to store the Alarm temperature on the microcontroller EEPROM. So that the value retains even after power failure.





circuit diagram :-->

 

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