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Unread 17-01-2002, 20:56
Kai Zhao Kai Zhao is offline
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3 ways (that I can think of):

-Make a counter. Crude example code below.
Count = Count + delta_t + 1
If count < (value)
PWM1 = 255
PWM2 = 255
goto end_drive
'if finished, do nothing
PWM1 = 127
PWM2 = 127
end_drive:

-Use the gyroscope and record your angular velocity (or is it acceleration?). Manipulate the data to suit your needs.

-What I call 'CSS'. Basically, it is a wheel with sensors on or near it. See this post: http://www.chiefdelphi.com/forums/sh...&threadid=1814
Instead of measuring forward velocity, you would want a "magic wheel" and have it pointed sideways. Or, you can make two and put them on either side of your robot and measure the difference.

I believe the last idea is the best, but it is also the most complex.
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