Are we given sufficient sensors in the kit?

[Nucks]

There's the accelerometer, and the Hall Effect Sensor (2).
Are these two sufficient for sensors on the robot, and if not, what else would be useful?

Edit: My teammates seem to recall from the kick off video that the sensors provided in the kit would be sufficient, this is why i'm asking.
Thanks for replies

[Mike Betts]

Originally Posted by Nucks

There's the accelerometer, and the Hall Effect Sensor (2).
Are these two sufficient for sensors on the robot, and if not, what else would be useful?

Edit: My teammates seem to recall from the kick off video that the sensors provided in the kit would be sufficient, this is why i'm asking.
Thanks for replies

It is evident (by inspection of the code and inspection of the kickoff video) that the kickoff robot had gyro sensors and encoders installed. Neither of these sensors were included in the kit.

JMHO.

[Al Skierkiewicz]

Something that helps software out is knowing where certain parts of your robot are. Pots (variale resistors) connected to moving arms, steering mechanisms, etc. can report back to software and help modify robot reactions and assist in auto modes.
Microswitches can be used to limit travel or sense when a moving part has just about reached it's mechanical limit.
Wheel encoders/shaft encoders can be used to tell how far you have driven.

[Zanella BR]

Originally Posted by Nucks

There's the accelerometer, and the Hall Effect Sensor (2).
Are these two sufficient for sensors on the robot, and if not, what else would be useful?

Edit: My teammates seem to recall from the kick off video that the sensors provided in the kit would be sufficient, this is why i'm asking.
Thanks for replies

It depends on what you wanna do.
For the demonstration in the kick off I think the kit can be enough, depending on the programming and way of use.

Obviously, you'll need more sensors for monitoring an arm, for example, or other specific function.

[phrontist]

There is no gyro in the kit?

[Mike Betts]

Originally Posted by Zanella BR

For the demonstration in the kick off I think the kit can be enough,...

Leandro,

I believe that the demonstration robot used a gyro and encoders. Neither were in the kit. If you want to use them, you have to buy them.

[Mike Betts]

Originally Posted by phrontist

There is no gyro in the kit?

No.

[Zanella BR]

I know that a gyro can be used, actually I already used in an old project. I haven't read all about the sensor of this year's kit (which is not here yet), but I suspect that you can use for that function.

[ShadowKnight]

Originally Posted by Mike Betts

Leandro,

I believe that the demonstration robot used a gyro and encoders. Neither were in the kit. If you want to use them, you have to buy them.

While a gyro sensor is not given in the kit and neither are sensors labeled "encoders," FIRST does provide an accelerometer and 2 hall effect sensors. The accelerometer, with the right fine tuning, can give feedback similar to that of a gyro. Additionally, the hall effect sensors basically are wheel encoders.

[Mark McLeod]

Originally Posted by ShadowKnight

While a gyro sensor is not given in the kit and neither are sensors labeled "encoders," FIRST does provide an accelerometer and 2 hall effect sensors. The accelerometer, with the right fine tuning, can give feedback similar to that of a gyro. Additionally, the hall effect sensors basically are wheel encoders.

I'd rather have the Silicon Sensing Systems GYRO-CRS03 gyro and Grayhill 61K128 encoders the kickoff robot used.

[Gal Longin]

In the kick-off they said we have all the sensors we need inside the kit. they said we\d be getting a PID controller. does anybody know where that is? I can't seem to find it in the code.

How can the Acceleration meter be used as a gyro?

[troy_573]

are we allowed to purchase our own gyro sensors ... from what i understnad is that the gyros were not allowed

[Mark McLeod]

Originally Posted by troy_573

are we allowed to purchase our own gyro sensors ... from what i understnad is that the gyros were not allowed

Yes, you are allowed to purchase gyros just like last year as long as they meet the vendor and cost rules.

[CJO]

Originally Posted by Gal Longin

In the kick-off they said we have all the sensors we need inside the kit. they said we\d be getting a PID controller. does anybody know where that is? I can't seem to find it in the code.

How can the Acceleration meter be used as a gyro?

The PID system is available along with the scripting at www.kevin.org/frc. In my humble opinion, an accelerometer is a very poor substitute for a gyro. Last year we ended up disconnecting our accelerometer because all it did was eat up processing power. Remember the cool thing where Lavery jarred the robot, and then it righted itself? In my experience, accelerometors tend not to register sharp hits accuratly, they either over-, or underestimat the severity of the movement.

[Nucks]

I'm not clear myself what a gyro sensor is, from what I've read and looked through, its some rotation sensor of some sort?
Anyone want to help clarify this for me?