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Can you please tell us the literature aboutt the PID constants used in the code? - Electronoobs Q&A

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Dear Electronoob,

I want to understand how these constants of P , I and D affect.

I am using an NTC thermister 100k as temperature sensor. The sensed temperature is lesser than the set temperature at 12 V (about 1 deg Celcius)

and when 7.5 Volts is given to the heater then the temoerature sensed is 3-4 degrees less. Can I caliberate this for better reading with the help of these constants??

Thanks for your help.
related to an answer for: Temperature PID controller - Arduino
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