Distributor reported inventory date: This video on the SensorTile. Use-case on a Human Activity Recognition algorithm included. Watch this short tutorial on the Expert mode of the SensorTile.
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The LM is an easy to use, relatively precise temperature sensor. It is great for things like temperature loggers and temperature controllers. This sensor is much easier to use than thermocouples, because it does not require any additional interface circuitry. It is also easier than thermistors or other resistive temperature sensors, since it requires no calibration, and has a linear response.
When connected the sensor acts much like a Zener diode. Regardless what current is flowing through it, it will drop the same amount of voltage. The voltage at the output will be 10 millivolts per kelvin temperature. This means at a comfortable room temperature it will output about 2. This is close enough to the middle of our measurement range of V to allow a wide range of measurement with the arduino. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
The pinout shown is the bottom view. The ADJ pin is for calibration, and can safely be left disconnected. We can do any calibration using the arduino sketch. Put the sensor in the breadboard as shown. Flat side toward you. Now connect a resistor to the center lead of the sensor, and run it to the other side of the breadboard. Connect the resistor to the 5V pin of your arduino.
If you are using an external power supply you probably have 5 V nearly exactly. If, on the other hand, you are powering your arduino from usb, you probably have a little bit less.
Since the supply voltage is the reference for the ADC, you will need this to calibrate your measurements. Using a multimeter, find the voltage between the 5V and GND pin of your arduino, and write it down. I got 4. To read the temperature you now need to get the value of A0 using analogRead 0.
This will give you a value between 0 and Below is an example sketch to read the LM You can download this code here. I split off the class I used here as an arduino library. If you want to use it you can download it here. You can then import it into any sketch you like. Once you hit upload, you can open the serial monitor. The output should look something like this:. Btw, Can anyone send me the Arduino library files, please?
I've tried a multiple time to download the file, but still failed to do so. Thank you for this project. I have worked with the LMZ several times now and I had never considered making a class for the gizmo. Great leap of intellect. Made my code simpler and clearer for my current client. Again, thanks. Thanks for this tutorial first, it helped me a lot! But beacuse I cannot use the sensor on Analog pin A0 already used , could you kindly tell me, which line I have to correct, so I can put it on Analog pin A1?
Reply 5 years ago on Introduction. I have an alcohol sensor I can do one on next. I also want to show stepper motors and rc servos controlled from a phone over bluetooth. Is there something you think I should do? The great thing about this site is you can share almost anything that you can make. I love everything about the arduino so anything that you make, people will look at. By braumeistersmith Follow.
More by the author:. Add Teacher Note. Connect a wire from the Analog 0 A0 pin of your arduino, to the center lead of the sensor. Finally, connect the GND pin of your arduino to the right pin of the sensor.
The output should look something like this: Temperatures: Kelvin: Did you make this project? Share it with us! I Made It! Electronic Affirmation Mirror by bekathwia in Arduino. Reply Upvote. I tried out this on Tinkercad. I think the code fails to work there. XXiahh 2 years ago. Thank you. Very helpful. Thanks in advance. RickJ1 2 years ago.
Graham Mantel 4 years ago. DanielR34 4 years ago. I remember using these in my sensors class a few years back. So much fun!
Using the LM335 Temperature Sensor