Heat Sensor Circuit Using Lm35

Lm35 is a precession integrated circuit temperature sensor whose output voltage varies based on the temperature around it.

Heat sensor circuit using lm35.

Waterproof a lm35 temperature sensor. The temperature sensor is very useful in different ways. The following image shows the circuit diagram of a simple temperature controlled switch using lm35 temperature sensor lm358 op amp and a 5v relay module. Lm35dz is capable of reading the temperature in centigrade scale.

In this example i am going to show you how to make a heat sensor on breadboard. Today we are building a simple yet very useful circuit using temperature sensor lm35 in this circuit we are going to control the leds according to temperature around. In this circuit lm35 senses the temperature and converts into an electoral analog signal then this signal applied to microelectronic unit through an analog to digital converter adc. Circuit diagram of temperature controlled switch.

It can activate or deactivate any kind of device by observing a temperature. Related project using lm35. Components needed to build the lm35 temperature sensor circuit. Temperature sensor we are gonna use is lm35.

In this project we interfaced lm35 temperature sensor with arduino to design a digital thermometer. Digital temperature sensor circuit. The lm35 series are precision integrated circuit temperature sensors who. Now let s see how to interface temperature sensor with arduino to print the surrounding temperature on serial monitor of arduino ide.

In this circuit aurdino is the main component because it controls all functions. 3 and this is the reason you can power lm35 using any voltage between 4 to 20v. You can make your arduino on breadboard using ft232rl breakout board you can learn about making arduino programmer on breadboard in the previous articles. 5 circuit connections of temperature measurement using lm35 with arduino.

Digital thermometer using arduino lm35 temperature sensor. How to use lm35 temperature sensor. Lm35 temperature sensor equivalent. The measured temperature will be directly displayed on a 16 2 lcd.

Its another application is a fire alarm circuit. This is ideal because the arduino s power pin gives out 5v of power. We can use any type of arduino board. If temperature goes beyond a particular level 50 degree in this circuit then red led will glow automatically otherwise yellow led remains on below that particular temperature.

As you can see i have used a 5v relay module in the project. Lm35 temperature sensor ic. So in this tutorial we will design a simple temperature sensor circuit using the lm35 ic. Lm34 ds18b20 ds1620 lm94022.

The lm35 is a low voltage ic which uses approximately 5vdc of power. Here is a instructable to waterproof a lm35 for use on a tethered rov using a automobile 12v battery as a power source. Usb with type a and b connectors.