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Unread 02-02-2012, 05:52
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wilhitern1 wilhitern1 is offline
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Attaching Thermostats

Do you suppose (assuming I could power them legally) that it would be legal to attach 2 old style mercury thermostats to our robot. Any rules that would prevent this?
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Unread 02-02-2012, 06:21
Teched3 Teched3 is offline
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Smile Re: Attaching Thermostats

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Originally Posted by wilhitern1 View Post
Do you suppose (assuming I could power them legally) that it would be legal to attach 2 old style mercury thermostats to our robot. Any rules that would prevent this?
Mercury is a hazardous material, and likely would not be allowed on the robot.
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Unread 02-02-2012, 06:24
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Re: Attaching Thermostats

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Originally Posted by Teched3 View Post
Mercury is a hazardous material, and likely would not be allowed on the robot.
But is there a rule?
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Unread 02-02-2012, 06:32
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Re: Attaching Thermostats

[R08] ..
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Unread 02-02-2012, 06:38
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wilhitern1 wilhitern1 is offline
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Re: Attaching Thermostats

There really is only a tiny amount of mercury in them. About the same as a normal thermometer. Also, did you know that there is mercury in every flu shot... How about circuit boards. There's mercury in some of them. There are also radio active isotopes in many modern circuits. I guess I want to know how much is too much if there is a rule.
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Unread 02-02-2012, 06:42
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Re: Attaching Thermostats

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Originally Posted by Jack Jones View Post
[R08] ..
Personally, I would say that it is not intended to apply to this. I suppose that I'll have to ask Q&A.
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Unread 02-02-2012, 06:46
Teched3 Teched3 is offline
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Smile Re: Attaching Thermostats

Ask the GDC if you want an official ruling. Look up R08, and by the way, there is a lot more mercury in the thermostat than a thermometer.
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Unread 02-02-2012, 07:24
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Re: Attaching Thermostats

The other question to this is what are you trying to acomplish by attaching them? Some members of the CD community may be able to help you come up with a better solution. Give us more detail about what you want to do with them and let us see if that is the only solution. My guess is that the GDC will tell you no, but I have been wrong before.
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Unread 02-02-2012, 07:36
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Re: Attaching Thermostats

Sounds like a tilt sensor. Not only is mercury a haz mat but, it would slosh around and not work well. A highly filtered accelerometer would work as a tilt sensor.
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Unread 02-02-2012, 08:13
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Re: Attaching Thermostats

Wil,
Mercury is not allowed under the referenced rule. Among other things, it is impossible to get out of the playing field carpet. As Gary has pointed out, there are several alternatives for what your intended use might be.
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Unread 02-02-2012, 10:31
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Re: Attaching Thermostats

Quote:
Originally Posted by Gdeaver View Post
...A highly filtered accelerometer would work as a tilt sensor.
On another channel, a "digital gyro from this year's kit of parts" was suggested. Is that also equivalent? And how hard will it be to make work?
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Unread 02-02-2012, 10:33
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Re: Attaching Thermostats

Why not use a ball bearing in a tube instead?
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Unread 02-02-2012, 12:59
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Re: Attaching Thermostats

Quote:
Originally Posted by wilhitern1 View Post
On another channel, a "digital gyro from this year's kit of parts" was suggested. Is that also equivalent?
The kind of gyro supplied as an FRC kit part will not work well as a tilt sensor. You definitely want an accelerometer.
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Unread 02-02-2012, 14:07
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Re: Attaching Thermostats

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Originally Posted by Alan Anderson View Post
The kind of gyro supplied as an FRC kit part will not work well as a tilt sensor. You definitely want an accelerometer.
You don't happen to know what it reports do you?
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Unread 02-02-2012, 14:17
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Re: Attaching Thermostats

Quote:
Originally Posted by Alan Anderson View Post
The kind of gyro supplied as an FRC kit part will not work well as a tilt sensor. You definitely want an accelerometer.
What if you mounted it on it's side?
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