Arduino Network Temperature Sensor

Lm35 is three terminal linear temperature sensor from national semiconductors.

Arduino network temperature sensor.

The temperature sensor lm35 series are precision integrated circuit temperature devices with an output voltage linearly proportional to the centigrade temperature. The ds3231 time clock module works with the arduino through the i2c communications. This means that it just requires one data line and gnd to communicate with the arduino. Lm35 analog temperature sensor with arduino tutorial the tmp36 reads temperatures from 40 c to 125 c provides a 750mv output at 25 c and operates to 125 c from a single 2 7 v supply.

And that would take 5000 feet of cable. The sensor can measure a fairly wide range of temperature 50 c to 125 c is fairly precise 0 1 c resolution and is very low cost making it a popular choice. The dht11 is a digital temperature sensor that measures temperature and relative humidity. It can measure temperature from 55 degree celsius to 150 degree celsius.

This sensor is functionally compatible with the lm50. The tmp35 and tmp36 have the same output scale factor of 10 mv c. I know this because we recently deployed an ip phone system which required such a network and we used 5 1000ft spools of cat5e. This makes them very easy to use with any microcontroller including the arduino.

These sensors contain a chip that does analog to digital conversion and spit out a digital signal with the temperature and humidity. To copy the code click on the button in the top right corner of the code field. Ds18b20 temperature sensor with arduino example code with the following example code you can read the temperature from a ds18b20 sensor and display it in the serial monitor. The lm35 temperature sensor gives the output in analog form.

The tmp36 temperature sensor is an easy way to measure temperature using an arduino. We need to convert this output using the adc to be able to measure the temperature. The ds18b20 temperature sensor is a one wire digital temperature sensor. The arduino has a built in adc through which we will convert the output of lm35 into a temperature value.

If i do an wired ethernet network with the associated hardware it would be a star style network with each sensor on its own arduino node. It can be powered by an external power supply or it can derive power from the data line called parasite mode which eliminates the need for an external power supply.