3 Sensor Line Follower?! - The Most Versatile EV3 Line Following Program

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Күн бұрын

You've seen every EV3 line following program out there, but none of them can handle the most extreme conditions. Enter the 3 sensor EV3 line follower! This is hands down the most versatile line following program out there. It can easily follow straight lines and smooth curves, but it can also tackle 90 degree corners that pop up without notice. This is an extreme line follower for the most demanding of challenges. It works by combining the principles of a single sensor proportional line follower with those of a two sensor line follower. Note that it is not necessarily the most practical option for an FLL or WRO robot.
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EV3 3 Sensor Line Follower: • 3 Sensor Line Follower...

Пікірлер: 45

@jacksonsherriff9899 6 жыл бұрын

I remember you! I used to watch so many of your videos 2 years ago when I first got my ev3. Good on you for still making videos!

@Builderdude35 6 жыл бұрын

Haha, thank you! I hope I can continue as long as I can.

@ActuallyNothing-pg9ew 11 ай бұрын

builderdude35 has singlehandedly made my will to live skyrocket with these videos. thank you SO MUCH

@mairisberzins8677 4 жыл бұрын

Can you upload your programs somewhere and put the link here? It's annoying to pause the video and go back into mindstorms to put the block i saw.

@aadijain6482 4 жыл бұрын

I have a question what happens when we put the whole pid part in the middle sensor

@w0ttheh3ll 6 жыл бұрын

awesome! is there any video of it following a curved line?

@Builderdude35 6 жыл бұрын

No video, but it should be able to handle gentle curves.

@falcao_g 4 жыл бұрын

you can made a version of that without variables?

@DexFire1115 6 жыл бұрын

Nice. Do 4 sensor line follow exist? Also, how would you code a wall follower with one sensor on two sides?

@Builderdude35 6 жыл бұрын

Yes, they exist. Maybe I'll do a video on that!

@pozitiv9850 3 жыл бұрын

Спасибо Бро))))

@ggelosstavrou9117 4 жыл бұрын

Will this algorithm work for extreme paths for example if there are circles and zig zags?

@joaquim9410 2 жыл бұрын

I know it's been a year, but I just tried and it works very well. I would just recommend making your round do some rotations before start doing the curve

@KIXEMITNOG 11 ай бұрын

nope its shit af

@dluders 6 жыл бұрын

What happens if the three EV3 Color Sensors are all in aligned evenly, straight across the front of the robot? Does the center EV3 Color Sensor have to be mounted a bit more forward than the outermost two EV3 Color Sensors?

@Builderdude35 6 жыл бұрын

I was just too lazy to change the sensor configuration on the robot. It actually works better with the middle sensor in line or behind the other two, so the robot can anticipate the 90 degree turns better. But, with enough programming, you can make anything work.

@warnniemusah9530 4 жыл бұрын

Hi there, in my case after completed the mission to follow the line, how to stop the robot in the loop program? Thank you.

@Builderdude35 4 жыл бұрын

See my tutorial on programming loop interrupts

@tushitchatterjee8383 4 жыл бұрын

Can it work on curved lines??

@dluders 6 жыл бұрын

I imagine that having three EV3 Color Sensors would make it easier to ACQUIRE the line (from a far-away launch point), and then STAY ON the line. If the approach angle is sharp, the outermost EV3 Color Sensors would allow the robot to turn sharply to stay on the line (without overshooting it), correct?

@Builderdude35 6 жыл бұрын

Great point! You are absolutely correct!

@bogdanstoican5080 4 жыл бұрын

love you

@bravesquid6183 6 жыл бұрын

I got the same glasses!!!

@Builderdude35 6 жыл бұрын

Sounds like you've got a great fashion sense! ;)

@albidwawi 5 жыл бұрын

What if we have a white gap and I want it to catch the other end of my line? the robot will start rotating on itself because of the propotional.. How can I fix this error?

@Builderdude35 5 жыл бұрын

You can learn about programming a line follower to pass over intersections (or gaps) in lines from this tutorial: kzfaq.info/get/bejne/gr6UoJlerNKUh3k.html

@nicbonhomme9877 6 жыл бұрын

Makes you wonder how much programming goes into a Mars rover that can't follow any particular line!

@yongrun6706 6 жыл бұрын

Does this works for the nxt robot? Thanks

@Builderdude35 6 жыл бұрын

Yes.

@PC-fe1pf 5 жыл бұрын

Mine is going like crazy to the right and left.Any solution?

@mairisberzins8677 4 жыл бұрын

adjust your proportionality value or whatever that was?

@coconutperson1985 2 жыл бұрын

You need 3 sensors for right angles? I need 1

@Cephurr 5 жыл бұрын

Will 3 sensor line follower turn properly on Intersections?

@Builderdude35 5 жыл бұрын

Yes, but you will need to program it to react similar to how any other line follower would : kzfaq.info/get/bejne/gr6UoJlerNKUh3k.html

@reecerobinson7888 6 жыл бұрын

How is this even close to as efficient as a one sensor PID..?

@DexFire1115 6 жыл бұрын

Reece Robinson, yeah. Also if you buy an EV3 kit it only comes with one. 🙁

@reecerobinson7888 6 жыл бұрын

DexFire yeah man, we have 3 on our robot, but we only use 1 sensor PID. Takes a full day to calibrate, but it is PERFECT.

@Builderdude35 6 жыл бұрын

As I said in the video, a 3-sensor line follower is not a replacement for a PID. This is for those extreme cases that a PID can't handle (90 degree turns).

@reecerobinson7888 6 жыл бұрын

Builderdude35 But our PID can do 90 degree turns on either side of the line?

@Builderdude35 6 жыл бұрын

In that case, yes, your PID line follower is much more efficient. It's much easier to get a three-sensor program to that performance level, but if you have a PID that works just as well, then definitely use that.

@seppochuu4688 6 жыл бұрын

Could i make a 3 sensor PID line follower?

@Builderdude35 6 жыл бұрын

Not really... With the kind of 3-sensor line follower I show here, you can apply a PID algorithm to the middle sensor, but the two outer sensors will always be Boolean. While it is possible to do it (at least, only for the middle sensor), it wouldn't make much sense to do it, as you wouldn't get many advantages from the added complexity.

@seppochuu4688 6 жыл бұрын

Thanks!