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Topic: Is this work for frequency counter (Read 7 times) previous topic - next topic

novamax

i have one more question, that is abou the pulseIn function
could the pulseIn function be used for finding the frequency in half-sine-wave current?

AWOL

#121
May 13, 2010, 07:10 pm Last Edit: May 13, 2010, 07:13 pm by AWOL Reason: 1
That's the same question twice.
That's cheating.

You said this is a final-year project.
Can I ask for what sort of course?
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

novamax

#122
May 13, 2010, 07:12 pm Last Edit: May 13, 2010, 07:17 pm by max88poon Reason: 1
Quote
That's the same question twice.
Thats cheating.

You said this is a final-year project.
Can I ask for what sort of course?


lol, i am sorry
but do you know the truth ? :)

it is automotive engineering
i am not good at electronics , but mechanics will do, i think

novamax

Great !
the program is working
however there is a problem, the speed range cannot be change progressively
it just can show the max and the min
the max speed that can be show is 3A current to the motor, min speed that can be shown is 1.2A current to the motor
now the sensor output through the transformer, that is around from 1.2v to 3v
the max speed is around 11xx km/hr (so fast..), min speed is around 12 km/hr

novamax

how can i find out the speed in the range ?
between the max and min


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