Heat Sensor Circuit Using Lm35

Circuit diagram of temperature controlled switch.

Heat sensor circuit using lm35. 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. Digital temperature sensor circuit. In this example i am going to show you how to make a heat sensor on breadboard. This is ideal because the arduino s power pin gives out 5v of power.

Temperature sensor we are gonna use is lm35. Lm35dz is capable of reading the temperature in centigrade scale. Components needed to build the lm35 temperature sensor circuit. 3 and this is the reason you can power lm35 using any voltage between 4 to 20v.

We can use any type of arduino board. 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. Related project using lm35. How to use lm35 temperature sensor.

The lm35 is a low voltage ic which uses approximately 5vdc of power. Lm35 is a precession integrated circuit temperature sensor whose output voltage varies based on the temperature around it. 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. Waterproof a lm35 temperature sensor.

In this project we interfaced lm35 temperature sensor with arduino to design a digital thermometer. Digital thermometer using arduino lm35 temperature sensor. Here is a instructable to waterproof a lm35 for use on a tethered rov using a automobile 12v battery as a power source. It can activate or deactivate any kind of device by observing a temperature.

It is a small and cheap ic which can be used to measure temperature anywhere between 55 c to 150 c. The lm35 series are precision integrated circuit temperature sensors who. Lm35 temperature sensor equivalent. Now let s see how to interface temperature sensor with arduino to print the surrounding temperature on serial monitor of arduino ide.

Usb with type a and b connectors. 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. So in this tutorial we will design a simple temperature sensor circuit using the lm35 ic. 5 circuit connections of temperature measurement using lm35 with arduino.

You can make a heat sensor using lm35 and arduino. Its another application is a fire alarm circuit. The temperature sensor is very useful in different ways. Lm34 ds18b20 ds1620 lm94022.

As you can see i have used a 5v relay module in the project. Lm35 temperature sensor ic. You can make your arduino on breadboard using ft232rl breakout board you can learn about making arduino programmer on breadboard in the previous articles.