Видео

Thanks

Hi, thanks for watching!

That sound that the error calculation is reversed. Brain inertial report opposite direction angle. Check this video "sensor" for the detail: ruclips.net/video/rX9x5GWai5I/видео.htmlsi=pIgFu7FdWNJyiFto One way to fix it is to reverse the velocity logic. It sounds that it is turning the opposite direction.

That looks right. That formula would make the robot turn in the same position without it moving forwards. Matthew is out for 10 days but he may be able to give you more details when he returns.

@MakaylaChou thanks! Let me know when Matthew is back and how he thinks about this?

Thanks for the wait. A new video is coming tomorrow on this subject. I hope it helps. :)

Gyro and distance sensors

Stay tuned! This is a leak for my next video sharing strategies on making a consistent and resilient autonomous.

Is it PID?

@@RanOutOfParts Sure it is PID!

It is coming on Christmas :)

Hi, thanks for watching my video! We used the rubber bands to pull down the floating center to make sure it always touches the ground. Here is a further explanation : ruclips.net/video/fHyZfsdbXrQ/видео.htmlsi=Xd9A6PxjXL71PnpQ

Check out the blog as well: medium.com/@makayla.chou1234/vex-secret-to-reliable-h-drive-on-big-heavy-robot-ad848976414c

Thanks. Take a look of this shorts: ruclips.net/user/shortsGPtr3xNkk4Q and blog: medium.com/@makayla.chou1234/motor-sharing-lossless-pto-afd17c82d667

@@bloxboy2b893 Hi, thanks for watching the video! There are two ways to do this. Creating a separate myblock for moving backwards or adding a parameter in your myblock to tell robot either walk forward or backwards. If you are new to the coding, making a separate myblock is cleaner and your code is easier to read/fix.

@@MatthewChou0 can you give me a example

@@bloxboy2b893 So, in the formula, the left wheel speed and right wheel speed would be negative to go reverse. For the robot to adjust clockwise, instead of right wheel slow down, we need left wheel to slow down. For the robot to adjust counter-clockwise, we need right wheel to slow down. It is opposite to go forward. So here is the formula (MaxSpeed is the maximum velocity your robot can run): In the situation that Error >0: SetLeftWheelVelocity = - MaxSpeed: SetRightWheelVelocity = - MaxSpeed + Kp*Error In the situation that Error <0: SetLetWheelVelocity = - MaxSpeed - Kp* Error; SetRightWheelVelocity = - MaxSpeed

@@MatthewChou0 I’m sorry I just don’t understand could you send a photo of our you would do it in the code

@@bloxboy2b893 No worries. I'll include that in the next video. Stay tuned.

Takes a while to make it right. :)

Thanks! 🙂

Yeah, have we met in a competition before?

Hey, thanks for watching my videos! Cost wise, a gyro is about $30 so it might be worth an investment since a kit and field are $1000. You can do everything we went over in the video with the brain inertial on the 2nd gen brain, but the brain would have to be at the center of the robot. I went over the key differences between the two in this video ruclips.net/video/rX9x5GWai5I/видео.html.

Great video! Our team has basic programming skills but I was curious if it is easier to use the drivetrain option and brain inertial or use the gyro with separating the motors? It seems that the ability to fine tune directions and turns would be greater with separate motors

Thanks!! And yep, when reaction force push robot away from its path (happens when robot hit walls or pick up ball), it is important that the robot can continue to follow the absolute angle that it is set to follow.

Thanks! How's your robot coming along? Feel free to ask if you need some more PID help

@ what’s your discord

@@madisoglrobotics inotmatt

Me too!!🫣

thank you :)

may i use this idea for a future VEX IQ competition if you allow me?

@@DenizQarazade-gd5vz Only if you like and subscribe 😉

İ like and subsciribe. And i use it. İt is very good

That option is open to the future team :)

Hello, how's your programming coming along? I posted a new video talking about Proportional Control. Check it out and see if it helps!

@@MatthewChou0 Thank you very much. You produce incredible quality content. There is a lot to learn from you.

Check out my GitHub. You can find the sample file for the PID design there. Also, watch my video for details :)

If I understand correctly, your robot goes forward too far and gets stuck on the wall before it shoots. One way I would solve this is by adding a bumper senor at the front of the robot. This way, you can tell the robot to move forward until it hits the bumper

@@MatthewChou0 Can you share a sample autonomous program? From this year or last year. Your autonomouss are working very stably.

@@vexhocam1473 Check my GItHub. More code sample are coming... github.com/thellamacatcher1/VexCode

@@MatthewChou0 Even when going straight, I don't know why it doesn't go straight because of the omni wheel. For example, should the 200 mm go stop command be controlled with time instead of a sensor?

@@vexhocam1473 What I would do : 1 Physical Issue Check of all the wheels are free spinning (make sure there's nothing rubbing the wheels or if there is more resistance on some wheels) 2 Motor issue I would set the move speed to 50% and see if the robot is still not walking straight. If it walks straight at 50% and doesn't walk straight at 100%, find a speed that will work well and walk fast enough with it still going straight. OR we could swap around the motors

have we met in the past competition?🙂

@@MatthewChou0 that's madison sogl, also madisogl

Thank you! Watch and like my autonomous challenge video! I need 20 likes to continue making the PID video. Here is the link: ruclips.net/video/rX9x5GWai5I/видео.html

@@MatthewChou0 ok thank you will do!

@@MatthewChou0 if I had any questions can you please answer them?

@@Chaaaazz Yes. I'll be happy to help :)

@@MatthewChou0 thanks! I’ve watched both your videos and am wondering how long until the video with the code for the pid comes out, I tried the one cation tape robotics made a video about but the turning didn’t work on my robot, thanks!