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Unread 14-01-2013, 21:23
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Ether Ether is offline
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Re: Keep the engine speed

Quote:
Originally Posted by Radical Pi View Post
On our shooter last year we had a beam sensor which detected the spokes of the wheel instead of an encoder. It runs into some trouble at lower speeds
Did you ask the FPGA for the spoke count and then divide the change in spoke count by the elapsed time,

or

Did you ask the FPGA for the elapsed time (using the microtimer) between the last two counts ?