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Re: How Precise and Accurate is the Analog In on the Crio?
Quote:
Originally Posted by Tom Line
My team and I have been discussing novel ways to measure the right amount to pull our shooter back. One of the things that was brought up as a neat possibility is a strain gage. We can get a strain gage that is temperature compensated for aluminum, and the wheatstone bridge we have can be powered by the 5 volts, however the return voltage from a strain gage is very small - in the millivolt range.
I'm concerned that:
#1 The Crio won't be able to accurately measure values that small repeatably
#2 The strain gage will be affected by the jostling and slamming around that will result when we put it on our shooter.
Can someone chime in on the Crio resolution and accuracy? (Perhaps Eric?)
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Are you using a winch to pull your shooter back? If so, may I suggest using the magnetic encoders supplied in this year's kit - the non-contact characteristic makes it perfect for something that must unwind as quickly and with as little drag as possible.
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Manoel Flores da Cunha
Mentor
Brazilian Machine
Team # 383
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