I just wanted to let you know how amazing I think this channel is, I just started a team for 7 9-14 yr olds and the content on this channel is so great and helpful.
depends on ur wheel size. a bicycle wheel (white large one) requires smaller Kp values from 0.1 to 0.8. It also depends on your preference whether u want the line follower to be a little more shaky so that it corrects the mistakes fast which means higher Kp value or u want a smooth one less jittery kind which means lower Kp value
Builderdude35, can you make a video explaining how to make a two-sensor PID line follower please? If there is such thing as a two-sensor PID line follower.
I won't make a video explicitly on it, but if you watch my PID line follower video and my 2-sensor proportional line follower video, you can put the two together.
Isn't another con of the 2-sensor prop follower that you need to adapt the robot to the line width, by rebuilding to increase or decrease the distance between the sensors?
+Builderdude35 Oh, thanks! By gap, i meant that parts during the track that there is no line to follow and the robot has to keep going ahead. I've been trying to adapt the two proportional line follower for this for over a week, but no success yet.
Could you make a tutorial on how to delete MyBlocks from the brick display because when I open my project, all the MyBlocks are listed there and it takes a long time to get to my other programs through them. I could just reorder them, but I don't know how to do that either :p. So how can I delete MyBlocks from the brick display without deleting them entirely?
You can close the tabs at the top of the program, which will just minimize them without deleting them. Otherwise, there's really no way to do what you'd like without physically removing them from your project.
Have you had any issues using reflected light to follow the red line from the EV3 box sleeve/mat? I can make it work fine using the colour value (but it zig-zags lots because it's binary), but even with calibration I just get the same RLI value for both the red and the white (my guess is it's because the light is really shiny and it uses a red light to detect RLI, since it detects black/white fine). I can't find much info online from people following that line using RLI so I'm not sure if this is normal?
I have actually never used the EV3 box sleeve. However, if the red is really glossy, then you are correct, as a shiny surface will reflect a lot of light and make the RLI value similar to that of pure white. Instead of calibrating, try to find the RLI of both red and white and adjust the threshold values in the program to compensate.
Hi! We tried to use the PID line follower... We calibrated our sensor 1(minimum, black line colour intensity) to 100 (maximum, white line colour intensity). We looked at our Black-White midpoint and it showed us an ,,n,, value. We put the value into the Midpoint value and started the program. This did not work.. the robot started to go circle around ... We tought that the Kp value is too big, but after we modified the value the robot did the same thing. What is the problem.. Please answer earlier as you can.
Nice work dude! Which program would you suggest for FLL, first year and I anticipating change in light intensity at competition ground, not sure if we will have enough time to adjust PID or Proportional ?? >
For a first time FLL team, I recommend the proportional line follower. I encourage everyone to aim higher than zig-zag, and PID may be too much for someone just starting out. As for the second part of your question, I'm not sure what you mean; could you please clarify?
If I understand his question correctly, he is wanting the program to prompt for the variables that identify the colors to differentiate from. Basically wanting the program to request the value, place the sensor on the color and then store it for the current run time rather than hard coding it in the program.
May i know whether the 2 sensor proportional or the PID(PD) line follower is better?...............................and is it possible to have 2 sensor PD line follower?
I think that's something everyone will need to answer for themselves, as every team and every robot is different. Start experimenting and see what you like the best!
Thanks for the suggestion. I don't know if I will ever make a video on this, but in the meantime, check out my video on PID line following, then my video on 2-Sensor proportional line following, and try to combine them.
I just wanted to let you know how amazing I think this channel is, I just started a team for 7 9-14 yr olds and the content on this channel is so great and helpful.
Thank you! I'm very glad to hear that you and your students are finding the content helpful! Good luck this year!
Who downvotes a video like that? Congrats man, keep up the good work!
bruh we r on youtube not reddit lol
The Proportional Derivative Controller (PDC) is more accurate than the PID and has about the same complexity. I'd definitely look into it.
Agree with you
Wow so i am late but this helped me get 3rd place in the championship in my country
Hello ,can u make the robot reverse following the line?
I am not able to make the PID line follower do turns, can someone help me please
can u provide program for line follower
How can I make 3 sensor line follower but no zigzag
how do you find out KP and the other values? trial and error?
i wanted to know the fastest way to find out
depends on ur wheel size. a bicycle wheel (white large one) requires smaller Kp values from 0.1 to 0.8. It also depends on your preference whether u want the line follower to be a little more shaky so that it corrects the mistakes fast which means higher Kp value or u want a smooth one less jittery kind which means lower Kp value
please could you show us how to make program for FLL when the black line is cutting in some part of the main path .?
I already have such a video; see my tutorial on line following through intersections.
I need a line follower wich goes straight when the line ands.
Builderdude35, can you make a video explaining how to make a two-sensor PID line follower please? If there is such thing as a two-sensor PID line follower.
I won't make a video explicitly on it, but if you watch my PID line follower video and my 2-sensor proportional line follower video, you can put the two together.
Isn't another con of the 2-sensor prop follower that you need to adapt the robot to the line width, by rebuilding to increase or decrease the distance between the sensors?
Generally the line will be uniform in width. For example, FLL has a standard width for all lines.
and why does the proportional line follower have to the multiply by -1.5 piece because i dont understand that
nvm, i understand
Which Programm would you suggest for a Robot which has Just to Drive straight ahead as fast as possible ?
Tall wheels and gears configured for speed. See my videos on gears for more information. Also see my Terminal Velocity video.
@@Builderdude35 okay thanks and which Programm do you think is the best for it ?
Can you show how to cross over a gap using a two proportional line follower?
I already have a video on it. See :Crossing Intersections with Line Followers."
+Builderdude35 Oh, thanks! By gap, i meant that parts during the track that there is no line to follow and the robot has to keep going ahead. I've been trying to adapt the two proportional line follower for this for over a week, but no success yet.
Could you make a tutorial on how to delete MyBlocks from the brick display because when I open my project, all the MyBlocks are listed there and it takes a long time to get to my other programs through them. I could just reorder them, but I don't know how to do that either :p. So how can I delete MyBlocks from the brick display without deleting them entirely?
You can close the tabs at the top of the program, which will just minimize them without deleting them. Otherwise, there's really no way to do what you'd like without physically removing them from your project.
Have you had any issues using reflected light to follow the red line from the EV3 box sleeve/mat? I can make it work fine using the colour value (but it zig-zags lots because it's binary), but even with calibration I just get the same RLI value for both the red and the white (my guess is it's because the light is really shiny and it uses a red light to detect RLI, since it detects black/white fine).
I can't find much info online from people following that line using RLI so I'm not sure if this is normal?
I have actually never used the EV3 box sleeve. However, if the red is really glossy, then you are correct, as a shiny surface will reflect a lot of light and make the RLI value similar to that of pure white. Instead of calibrating, try to find the RLI of both red and white and adjust the threshold values in the program to compensate.
Hi! We tried to use the PID line follower... We calibrated our sensor 1(minimum, black line colour intensity) to 100 (maximum, white line colour intensity). We looked at our Black-White midpoint and it showed us an ,,n,, value. We put the value into the Midpoint value and started the program. This did not work.. the robot started to go circle around ... We tought that the Kp value is too big, but after we modified the value the robot did the same thing. What is the problem.. Please answer earlier as you can.
Friend, I have the same problem today, how did you solve it so that it stops turning and turns the robot? Thank you very much friend
Nice work dude! Which program would you suggest for FLL, first year and I anticipating change in light intensity at competition ground, not sure if we will have enough time to adjust PID or Proportional ?? >
For a first time FLL team, I recommend the proportional line follower. I encourage everyone to aim higher than zig-zag, and PID may be too much for someone just starting out. As for the second part of your question, I'm not sure what you mean; could you please clarify?
If I understand his question correctly, he is wanting the program to prompt for the variables that identify the colors to differentiate from. Basically wanting the program to request the value, place the sensor on the color and then store it for the current run time rather than hard coding it in the program.
I try to program with two sensors but with motors geared to increase the speed and it does not work with any value, could you help me?
I can't help you on just that; is there any more information you can give me?
Use of gears of 20 and 12 to increase speed with wheels similar to the video (large), but does not follow the line with no value
Can you send me a pdf for the sirius build?
thanks
You can download the LDD for Sirius on my website, builderdude35.com.
ok my bad I didn't notice that you can download the LDD reader thx
could you give me place wires attached
i have a question: where are your annotations?
UA-cam discontinued annotations, so all of them are gone :(
May i know whether the 2 sensor proportional or the PID(PD) line follower is better?...............................and is it possible to have 2 sensor PD line follower?
I think that's something everyone will need to answer for themselves, as every team and every robot is different. Start experimenting and see what you like the best!
May i know which type tackles curved lines better?
Most say PID is the best, but it takes more time to get it adjusted correctly. Think of it as a tradeoff between time to program and performance.
why the robot rides on straight lines?
Because i go to the competition
It simply goes over them and is unable to turn, also in the video it said that it can do turns but he didn't even demonstrate it.
How about 2 sensors PID line follower
Thanks for the suggestion. I don't know if I will ever make a video on this, but in the meantime, check out my video on PID line following, then my video on 2-Sensor proportional line following, and try to combine them.
Hey guys! can you help me
Builderdude can you help me
No line follower, only Ultrasonic and Gyro sensor.
日本語字幕つけてください、
I would love for more of my videos to have subtitles; if you would like to contribute, or know someone who can, please let me know!