LM35 Temperature Sensor for Arduino and IoT development

LM35 temperature sensor arduino

LM35 Temperature Sensor for Arduino and IoT

Lm35 temperature sensor Application:   Measure the surrounding temperature

Used in

Power Supplies

Battery Management



Output type:                                    Analog output & Output calibrated in ° Celsius

Measurement (operation) Range:           -55° to +150°C

Accuracy:                                                 0.5° C accuracy at 25° C

Operating voltage:                                   4 volts to 30 volts

Current consumption:                              60 uA

Manufacturer:                                         Texas Instruments

Datasheet for sensor:                              datasheet




The LM35 is a high precision temperature sensor. It has a analog output, which is linearly proportional to the surrounding temperature. Just hook it up to a ADC pin on your microcontroller to get temperature readings.

Features of Temperature Sensor are as follows: 

  • Calibrated Directly in Celsius (Centigrade)
  • Linear + 10-mV/°C Scale Factor
  • 5°C Ensured Accuracy (at 25°C)
  • Rated for Full −55°C to 150°C Range
  • Suitable for Remote Applications
  • Low-Cost Due to Wafer-Level Trimming
  • Operates from 4 V to 30 V
  • Less than 60-μA Current Drain
  • Low Self-Heating, 0.08°C in Still Air
  • Non-Linearity Only ±¼°C Typical
  • Low-Impedance Output, 0.1 Ω for 1-mA Load

This LM35 sensor can be used to develop many Internet of Things applications.

following are some of IoT application with using LM35

  • IoT Temperature data logger using ESP8266 and LM35
  • Surrounding temperature measurement using Arduino
  •  Digital Thermometer Using Arduino & LM35 Temperature Sensor
  • Temperature Based Fan Speed Control & Monitoring With Arduino
  • and many more

There are other sensors similar to this that can use for temperature measurement


See also :  DHT 11- Temperature and Humidity Sensor


For more sensor click here

Let us know what you think about temperature sensor for Arduino in the comment section below.


See alsoTemperature Sensors- For an Industrial IoT (IIoT) applications


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Naval Allurwar
He is a learner and passionate about IoT ,and other new technologies. He has good industrial experience in IoT & Smart cities. He love to learn new things & make understandable to others at IoTDunia.com .