Yaw Rate Sensor

[Joe Johnson]

Originally Posted by Caleb Fulton

Yes, you should be able to, as the gyro's output is just an analog voltage between 0 and 5v.

While you can easily hook them up to your CPU, as I read the rules they are illegal.

Joe J.

[rishi224]

Originally Posted by FotoPlasma

FIRST nicely provided us with a big chunk of protoboard. The chips to which Dr. Johnson referred come in either BGA (ball grid array, terrible for us) or DIP (dual inline pin, very good for us) packages. I assume he plans to put them in some sort of enclosure and attach them to the robot using any of a number of available methods (nuts and bolts, epoxy, zip ties, it doesn't really matter).

i searched again.........
i didnt find any chips in DIP...........
could u please tell me where i could find the chips in DIP all i found was BGA

it would be really helpful if u could tell me where i could get one in DIP

thanks ^_^

[FotoPlasma]

Originally Posted by rishi224

i searched again.........
i didnt find any chips in DIP...........
could u please tell me where i could find the chips in DIP all i found was BGA

it would be really helpful if u could tell me where i could get one in DIP

thanks ^_^

http://www1.future-active.com/Comerg...a me=ADXRS300
http://www1.future-active.com/Comerg...a me=ADXRS150

As far as I know, the ADXRS[150/300]EB are DIPs. Hmm, they aren't cheap...

[rishi224]

Originally Posted by FotoPlasma

http://www1.future-active.com/Comerg...a me=ADXRS300
http://www1.future-active.com/Comerg...a me=ADXRS150

As far as I know, the ADXRS[150/300]EB are DIPs. Hmm, they aren't cheap...

i cheked them out!

they arnt DIP
http://www.analog.com/Analog_Root/pr...S300%2C00.html

at the end bottom of the page it says that its grid array

i really don know how to use grid array and dont have the time either. am in a fix

thanks for ur help. plz tell me as soon as u find any thing

[jjv]

Does anyone have specs on last years gyro?
or know the maker/model of it?

Thanks!

[Greg Ross]

My reading of the rules agrees with yours, Dr. Joe. But FIRST, today, said they ARE allowed:

Section: 5.2.6 Status: Answered Date Answered: 1/20/2004
Q: Are we allowed to use gyros that were given by F.I.R.S.T. last year?

A: Yes.

[WizardOfAz]

Originally Posted by gwross

My reading of the rules agrees with yours, Dr. Joe. But FIRST, today, said they ARE allowed:

Yes, this seemed to me to be an odd answer to that question.
Is that part still available?
Is is available from one of the preferred suppliers?
Does it cost < $100?

If any of the above questions are answered "no" (and it looks to me like they are all "no"), then where does FIRST's answer to that question leave rookie teams?

Over the weekend I tried to submit clear questions that should resolve some of the discussions we've been seeing about what parts have to be in the $100/$200 limit, and in what cases the preferred suppliers have to offer the part. No response to those yet though.

Bill

[jjv]

The -EB model is their Evaluation Board model, they have the same BGA chip premounted on a 20 pin dip board to make it easier to use.
Since technically, all it is is a pcb (which don't count towards price limits) and 7.2cents worth of caps, would we be able to use the price for the BGA?

[KenWittlief]

FIRST says we can use last years yaw rate sensor

______________________
Yes, this seemed to me to be an odd answer to that question.
Is that part still available?
Is is available from one of the preferred suppliers?
______________________

from team update 3, it sounds like they are saying, if you can get a part from one of the catalogs, then you can use a similar part, even if you actually obtain it from somewhere else.

I take this to mean, you can get yaw rate sensors from the catalogs, and the one FIRST gave us last year is "similar enough" that they will allow us to use it.

but you still have to account for its cost as an electrical component.