Chief Delphi - What sensors do your teams use

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- Electrical (http://www.chiefdelphi.com/forums/forumdisplay.php?f=53)

- - What sensors do your teams use (http://www.chiefdelphi.com/forums/showthread.php?t=149437)

ollien

04-08-2016 09:46

Re: What sensors do your teams use

Quote:

Originally Posted by ASD20 (Post 1596975)

They also sell a CIMcoder now, which is designed to fit right on the shaft of a CIM. I have not used this before, so I can not speak to how well it works or how easy it is to install, but I imagine it is pretty straightforward.

I cannot even think of recommending the CIMCoder. We had four of our drivetrain and by the time we reached competition, only two were reporting any information. I've also heard some horror stories of the shell cracking on high vibration applications like a shooter.

YMMV

marshall

04-08-2016 14:29

Re: What sensors do your teams use

Quote:

Originally Posted by ollien (Post 1599709)

Agreed. They need to be solidly filled and not a shell. Additionally, it would be nice if the little black square was actually a square and not a rectangle. Cranking down on it with the wrong orientation will crack the housing. It has a lot of potential but it needs some revisions.

seg9585

05-08-2016 18:15

Re: What sensors do your teams use

Quote:

Originally Posted by marshall (Post 1599707)

We use students as limit switches... the robot runs into them and they let us know about it. Decent feedback but a little slow and if they get hit too hard then they stop working sometimes. The good thing is we seem to have a never ending supply of them for replacements.

Same here! We have some good video demos of using our student limit switches in autonomous mode:
https://www.youtube.com/watch?v=WumkMeRE6Iw

Seriously though, this year Team 4276 used the following sensors:

Optical encoders (drive)
LIDAR (drive, tower distance)
Gyro/Accelerometer (rotation and inertial distance measurement)
Hall Effect Switch (arm position reset)
Hall Effect Counter (gear tooth sensor -- shooter wheel sped control)
Rotary Encoder (Arm position)
USB Camera (Telemetry/Drive Vision)
2nd USB Camera (Autonomous target detection)
Vex Pushbutton Switch (intake ball detection)

KJaget

05-08-2016 19:58

Re: What sensors do your teams use

Quote:

Originally Posted by marshall (Post 1599707)

As I remember our programming team also used the lab wall as a limit switch. Good thing our school's facilities guys are good with sheetrock.

Our actual list from this year :

line break sensors
lots of encoders (wheels and turret)
Stereolabs ZED depth camera

Probably missing something, but those are the major ones.

snekiam

05-08-2016 20:12

Re: What sensors do your teams use

We try not to use students or our build space as a limit switch; wouldn't want to damage the robot.

Hitchhiker 42

06-08-2016 03:51

Re: What sensors do your teams use

Our robot this year had the following sensors:

2 Optical Encoders for our Drivetrain*
2 Magnetic Encoders for our flywheel shooter
Potentiometer for our actuating wedges
Gyro
2 Cameras**

*In the offseason, we switched those out for magnetic encoders because one optical encoder never seemed to work (despite switching everything out from shaft to port.

**We got vision working in the offseason

GeeTwo

06-08-2016 16:31

Re: What sensors do your teams use

Quote:

Originally Posted by snekiam (Post 1599926)

We try not to use students or our build space as a limit switch; wouldn't want to damage the robot.

Then how do you train your pit crew? :ahh:

snekiam

07-08-2016 12:45

Re: What sensors do your teams use

Quote:

Originally Posted by GeeTwo (Post 1599999)

Then how do you train your pit crew? :ahh:

I said try not to, not don't. Don't worry, pit crew gets plenty of training :)

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