Thursday, May 22, 2014

Digital Thermometer using LM35 Sensor Based on Arduino Microcontroller Circuit Schematic

Robometricschool. - There are many electronic circuit that show you about digital thermometer application using sensor LM35. Usually the design digital thermometer also controlled with Microcontroller like MCS51, AVR, Arduino, etc.

In here we will show you one electronic circuit about digital thermometer using LM35 sensor that based on Arduino microcontroller like in figure 1 below. Beside we show you this circuit electronic, we also will give you arduino program for Digital Thermometer using LM35 Sensor with download this program from external server.

Circuit Schematic

Figure 1. Digital Thermometer using LM35 based on Arduino Circuit (Source:circuitstoday)

Component List
  1. IC1 = LM35
  2. Arduino Uno
  3. All component please see on figure 1 above


According Circuitstoday blog, describe that circuit schematic like in figure 1 above is a simple three digit digital thermometer using arduino. Range of this thermometer is from 0°C to 99.9°C. There is also a provision for displaying the temperature in °F scale. Three terminal analog temperature sensor LM35 is used as the sensor here. LM35 can measure temperatures between -55°C to +155°C. The supply voltage range is from 4V to 30V DC and the current drain is 60uA. The LM35 is available in TO-92 package and it is very easy to use. The output voltage of the arduino increases 10mV per °C rise in temperature. That means if 25 °C is the temperature, then output  voltage of the sensor will be 250mV.

Program Application

To know more about arduino program for Digital Thermometer using LM35 Sensor like in figure 1 above, please download with click link below easily:


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