First, we need to connect the 5V regulated power supply to the Vcc pin (Pin 20). The configuration of the ADC0804 is explained here. The digital output of the ADC is given to Microcontroller to calculate the temperature and control the fan accordingly. Which means, this is the minimum change in the analog value from the sensor which is recognisable by the ADC IC.Īs per the changes in the temperature, the output of the ADC is generated. For a reference voltage of 5V, we’ll get a resolution of 5V/28 = 20mV. The analog output of the temperature sensor will vary at 10mV per degree Celsius.ĪDC0804 is an 8-bit ADC. The Analog data from the LM35 temperature sensor is given to the analog to digital converter ADC0804. The project works on the principle of Analog to Digital Conversion. Buy Step by step Guide along with Code: Temperature Controlled DC Fan»
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