Line Tracking VI. drives in half a circle...?

[Must Be Drama]

Originally Posted by Alan Anderson

If you have told the robot to track the left edge of a line but you've placed it so the sensors are to the right of the line, it will turn right looking for the line and not find it.

okay il say our set up... we have last years robot we attached the sensers to the front. our previous robot has mech wheels.. i watched the frcmastery video but it doesnt help us any thing else could i say so some one could help us?

[Ethan Spitz]

well if you don't think its related to sensor trimming or hardware then I highly suggest rewriting your coding.

[Must Be Drama]

Originally Posted by Ethan Spitz

well if you don't think its related to sensor trimming or hardware then I highly suggest rewriting your coding.

but this is the default code... i dont understand why is it not attempting..

[Ethan Spitz]

Originally Posted by Must Be Drama

but this is the default code... i dont understand why is it not attempting..

Did you open up your sensors as IR1 IR2 and IR3? in begin.vi?

[Must Be Drama]

Originally Posted by Ethan Spitz

Did you open up your sensors as IR1 IR2 and IR3? in begin.vi?

yes sir

[Ethan Spitz]

Originally Posted by Must Be Drama

yes sir

Are the sensors plugged into the correct DIO ports? And correct order or LO and DO?

[Must Be Drama]

Originally Posted by Ethan Spitz

Are the sensors plugged into the correct DIO ports? And correct order or LO and DO?

1=left 2=middle 3=right
all using the white wire..

the power from each goes into the power distribution board and i have 20 amp breakers on each

[Ethan Spitz]

Hmmm. Try writing code to see if you man say make a wheel speed up when you cover the sensor or it sees the line etc.

Also the sensor should change from green to and orange red light when its on the line. Does yours do that?

[Must Be Drama]

Originally Posted by Ethan Spitz

Hmmm. Try writing code to see if you man say make a wheel speed up when you cover the sensor or it sees the line etc.

Also the sensor should change from green to and orange red light when its on the line. Does yours do that?

il try the make a motor spin if reflected.

and yes it does change colors and it does show up in the drivers station under gpio state..

[Ethan Spitz]

Ok, let me know what happens there. IF it doesn't work, I would recheck the wiring. And calibration cause that would rule out the programming problem.

[Must Be Drama]

Originally Posted by Ethan Spitz

Ok, let me know what happens there. IF it doesn't work, I would recheck the wiring. And calibration cause that would rule out the programming problem.

it works; whats the problem with the default code?

[Ethan Spitz]

Thats a good question . We just erased it and wrote our own code from scratch. I would suggest that since the default code isn't working.

Ethan

[ShockWaveBlue]

The default code wants you yo use the black wire, not the white. You can just invert the signal in the tele op code and I bet it works.

[The Trooper]

Originally Posted by Ethan Spitz

Hmmm. Try writing code to see if you man say make a wheel speed up when you cover the sensor or it sees the line etc.

Also the sensor should change from green to and orange red light when its on the line. Does yours do that?

Could you please provide a screen shot of your code as to how you would recommend programming the wheels to turn?

[Ethan Spitz]

It has case statements heavily nested in it so it won't be to much help. Basically we said if both sensors are off the line go straight, if left sensor is on the line make the right wheel spin a little faster till its off. If right is on the line, make the left wheel spin a little faster.

The middle sensor stays on at all times and if all of them end off the line, it knows which sensor saw the line last and turns that way.

Ethan