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Author Topic: pid contol  (Read 1093 times)

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Offline hinduja.prasadTopic starter

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pid contol
« on: September 29, 2009, 06:39:29 PM »
hi ppl.........i am planning to use pid control for my linefolllower . i got the essence of the algo but the problem is how to read the analog values from the IR sensors ? i came across many codes and tutorials fo pid where in they set the values of the sensors for eg.like 0-255 or 2000. how exactly 2 set this range?

Offline mayukh

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Re: pid contol
« Reply #1 on: September 30, 2009, 10:18:27 AM »
Read up on ADC... that would help solving your mystery.


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Offline Kohanbash

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Re: pid contol
« Reply #2 on: September 30, 2009, 08:54:38 PM »
Hi
As the last post said you will need some type of analog to digital conversion.

After that you want to record the minimum and maximum value that the sensor reports; and those are the values that you will use.
Also for the PID you need to develop a command for the motors based on the distance reported by the sensor so you will probably want to calibrate it so you know what the values from the sensor mean.
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