Temperature controller with IR connectivity

This temperature may look like several dozens thermostats that measure temperature and performs some action (switches relay) when temperature threshold is reached. Actually this is what this one does – it activates a relay with fan connected when temperature reaches 40ºC.

There is another thing what makes this device little bit different from others – it accepts TV remote control commands. By pressing 1, 2, 3 and 4 buttons each of four relays can be turned ON/OFF manually. Design is based on AT89C51 microcontroller which reads LM35 temperature sensor data via ADC0804 ADC. Compares temperature value to given threshold and in case of alarm it sends relay activation signal via ULN2003 Darlington transistor array chip. Grab project files, build and keep things cool.

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  1. hello..

    what you have program circuits temperature controller use mikrokontroler at89c52 with output lcd m1632 use language assembly…

    if you have..plesae send to my e-mile in
    satria_ituaja at yahoo.co.id


  2. i love your site.thank you alot

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