Lol. Anything that surprised you in this year's FLL competition compared to last year?
I'm not sure. I designed this years core robot but I put the wheel drive in the middle of the robot, which has now made very very inaccurate.
That is quite surprising. When I had my robot competition last year, I put the wheel drive in the middle of the robot and it worked very well. Maybe it has to do with your sensor placement. How far are your color sensors away from the center of the robot?
I'm not sure. I designed this years core robot but I put the wheel drive in the middle of the robot, which has now made very very inaccurate.
That is quite surprising. When I had my robot competition last year, I put the wheel drive in the middle of the robot and it worked very well. Maybe it has to do with your sensor placement. How far are your color sensors away from the center of the robot?
Not very far. It's literally just veering away randomly. It's because the centre of gravity is resting on the wheels and it has an equal amount of friction on both ends of the robot. If the wheels were at the front then it would only have friction at the back, and would thus be much more accurate.
That is quite surprising. When I had my robot competition last year, I put the wheel drive in the middle of the robot and it worked very well. Maybe it has to do with your sensor placement. How far are your color sensors away from the center of the robot?
Not very far. It's literally just veering away randomly. It's because the centre of gravity is resting on the wheels and it has an equal amount of friction on both ends of the robot. If the wheels were at the front then it would only have friction at the back, and would thus be much more accurate.
Ah, that makes a lot of sense, and with the attachments for your robot that vary in size and weight, it definitely won't perform the same with each attachment. Would it be possible to move the EV3 brick toward one side to keep it consistent?
Not very far. It's literally just veering away randomly. It's because the centre of gravity is resting on the wheels and it has an equal amount of friction on both ends of the robot. If the wheels were at the front then it would only have friction at the back, and would thus be much more accurate.
Ah, that makes a lot of sense, and with the attachments for your robot that vary in size and weight, it definitely won't perform the same with each attachment. Would it be possible to move the EV3 brick toward one side to keep it consistent?
Yeah, it's really annoying. Except we don't have time.
Ah, that makes a lot of sense, and with the attachments for your robot that vary in size and weight, it definitely won't perform the same with each attachment. Would it be possible to move the EV3 brick toward one side to keep it consistent?
Yeah, it's really annoying. Except we don't have time.
I guess there are a couple other ways of fixing it, but not within the limited time you have. If you have a gyro sensor, you could account for the veering rotation and make power corrections to your motors to go straight, but that may take too long to set up (considering I'm about to learn how to calibrate one myself in school). The other option could be to use Tank tracks instead of wheels. I heard that Dyson's robot vacuum cleaner uses tank tracks instead of wheels so that it goes straight. Yeah, you only have a week before your competition, if I remember correctly.
Yeah, it's really annoying. Except we don't have time.
I guess there are a couple other ways of fixing it, but not within the limited time you have. If you have a gyro sensor, you could account for the veering rotation and make power corrections to your motors to go straight, but that may take too long to set up (considering I'm about to learn how to calibrate one myself in school). The other option could be to use Tank tracks instead of wheels. I heard that Dyson's robot vacuum cleaner uses tank tracks instead of wheels so that it goes straight. Yeah, you only have a week before your competition, if I remember correctly.
Actually we tried that but unfortunately it's still not accurate enough. :/ It's on Saturday.
I guess there are a couple other ways of fixing it, but not within the limited time you have. If you have a gyro sensor, you could account for the veering rotation and make power corrections to your motors to go straight, but that may take too long to set up (considering I'm about to learn how to calibrate one myself in school). The other option could be to use Tank tracks instead of wheels. I heard that Dyson's robot vacuum cleaner uses tank tracks instead of wheels so that it goes straight. Yeah, you only have a week before your competition, if I remember correctly.
Actually we tried that but unfortunately it's still not accurate enough. :/ It's on Saturday.
Both they gyro and the tank tracks? Interesting. Is the veering going in the same direction or opposite directions? If it consistently veers to one side, perhaps the motors could be replaced and making sure the batteries are always as full as possible.
That's in a few days. I wish your team the best of luck.
Actually we tried that but unfortunately it's still not accurate enough. :/ It's on Saturday.
Both they gyro and the tank tracks? Interesting. Is the veering going in the same direction or opposite directions? If it consistently veers to one side, perhaps the motors could be replaced and making sure the batteries are always as full as possible.
That's in a few days. I wish your team the best of luck.
Yes. Yeah that's what we do. It's just general inaccuracy in EV3 motors.
Both they gyro and the tank tracks? Interesting. Is the veering going in the same direction or opposite directions? If it consistently veers to one side, perhaps the motors could be replaced and making sure the batteries are always as full as possible.
That's in a few days. I wish your team the best of luck.
Yes. Yeah that's what we do. It's just general inaccuracy in EV3 motors.
Ikr. Thanks!
Ah, I see. Do you know if the motors, when they turn a certain amount of degrees, have any feedback correction if it goes over or under?
What's it like being team leader so far. 
![[y]](http://storage.proboards.com/6672327/images/WYWPH2VRo26pOFDid7QZ.png)
