Dear friends welcome to another tutorial!
Today we are going to learn how to use this analog voltmeter with Arduino and make it show the temperature instead of the voltage. As you can see, in this modified voltmeter, we can see the temperature in degrees Celsius. The temperature is measured by this digital sensor, a DS18B20 and it is then displayed on the voltmeter. I really like analog dials like this one, because they give a vintage look to the projects.
By building this project you are going to gain a very valuable knowledge and expererience. The knowledge to add analog dials to any Arduino project and you are going to learn how to use the PWM functionality of the Arduino.
Let’s now see how to achieve that result.
The parts that we are going to need today are the following:
The cost of the project is around $9.