Temperature control algorithm [closed]

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I am a student of computer engineering and I am working on a PCR thermocycler.

I need to have a certain temperature needed to be able to perform all the steps in the process, and I'm having some problems with that. Me and my team are using simple on-off to control the temperature, it works, but we have an average of 1 ° c variation in temperature and this is not very good for a PCR, the big question is, would any of you have knowledge of an algorithm for temperature control that is efficient and gives me the lowest possible temperature variation?

    
asked by anonymous 30.05.2014 / 17:12

1 answer

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Turning off and on will give you a variation of 1ºc, you will also have a physical relee (I imagine you are using it) depending on the microcontroller and the level of programming they are doing direct on the micro or by an external API) I advise the use of PWM . If you post more information about the project I can give you more suggestions. I believe that today, all microcontrollers have at least 3 pins with PWM outputs, in these outputs you can modulate the pulse (ie not having 5v continuous or 3.3 continuous) thus giving more precision to the temperature

    
04.06.2014 / 22:14
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