Arduino- TM35 Controlling a DC 12v FAN With Temperature Sensor

Introduction: Arduino- TM35 Controlling a DC 12v FAN With Temperature Sensor

About: Hello world! I make simple & Advanced projects for people who want to learn programming and electronics. Most of my Instructables are about arduino and the wide range of sensors you can use with it. I make…

Hello world! Today i made a simple project with a LM35 Temperature Sensor and a LCD1602 Screen to control a 12v DC Fan with a arduino and a Relay. Check out the next step for the Schematic, Code & Parts list.

Step 1: Schematic, Code & Parts List.

Simply wire it up like the schematic make sure you have the library LiquidCrystal.h installed, And upload the code.

Parts list:

  1. Arduino uno, i used the RobotDyn uno. (Has 8 analog pins)
  2. LCD 1602.
  3. LM35 Temperature sensor.
  4. KY-019 Relay module
  5. Potentiometer
  6. 12V DC FAN (From a old computer will do.)
  7. Jumper wire set MM/FF/MF

Good luck!

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    4 Discussions


    10 months ago

    I have only a blinking square on the LCD please help


    Question 1 year ago

    Amazing Scheme but this is delivering 5v to a 12v Cooler. do you think it is possible to change the COM Door on the Relay to get power from another 12v source?