Hey there guys. This post is outdated. Visit https://www.robotshop.com/letsmakerobots/node/39972 for the updated tutorial.Hello LMRians,In this writeup, I will try to create a tutorial for tuning your robot using PID to follow a line. This tutorial won’t go deep down into the det…

Thanks Lumi. Can’t wait to Thanks Lumi. Can’t wait to see what you come up with!

LOL, it will perhaps happen LOL, it will perhaps happen this year :slight_smile: So many plans and so little time.

Really good tutorial! Hi How behaves your robot in case of 90 degree angle? Radius of angle is 0. Is the robot able to follow the line. Best regards.

Hello indrekm.A 90 degree Hello indrekm. A 90 degree turn is an extremely sharp turn. The PID parameters need to be tuned to near perfection in order to make a correct turn. But that is rather difficult. So, I suggest you set a 90 degree turn as a “special” case and work out a s…

Kp and Kd constants Kp = 0.2 and Kd = 5 worked for me as constants!

Stopping on a line? I’m using this sensor for my senior project at my University and was wondering if you knew of a way to have the robot stop if it goes over a solid black line being read by all sensors at once?

QTRSensorsRC qtrrc((unsigned char[]) { 14, 15, 16, 17, 18, 19} ,NUM_SENSORS, TIMEOUT, EMITTER_PIN); My code is not running because of this line. it says- Arduino: 1.8.9 (Windows Store 1.8.21.0) (Windows 10), Board: “Arduino/Genuino Uno” LFR_QTR_TEST:21:1: error: ‘QTRSensorsRC…

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PID Tutorials for Line Following

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lumi January 7, 2014, 5:15am 2

Pretty good tutorial. That

Pretty good tutorial. That reminds me that I need to dig into the PID a bit more to get some applications running.