Hello all, I want to use PID controller in Arduino. I have to use temperature sensor and in output I wanna use Peltier

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Hello all, I want to use PID controller in Arduino. I have to use temperature sensor and in output I wanna use Peltier. To control the temprature I want to give it a set point so that the temprature can be maintained according to the set point. How can I do this ?

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First advice is read and follow this link: How to get the best out of this forum - Using Arduino / Installation & Troubleshooting - Arduino Forum

  1. Start creating a test code reading the temp sensor.
  2. Make code operating the Peltier element.
  3. Merge the codes and start creating the conversion formula making the input affecting the output. Know it's difficult due to the time effect, the delayed action on an output command.
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Popular project! Find tutorials on the web using the search phrase "arduino PID peltier".

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You probably do not need PID (unless it should be very precise).
Work with on/off control instead.
Temperature changes are usually slow...