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Microcontroller › 8051 › Need help in RPM meter using P89V51RD2
Hi all,
I’m trying to design a RPM counter meter using microcontroller. I’m using one timer in microcontroller as counter to count the pulses of sensor which is connected to the wheel and another timer to generate a one second delay. When i gave input to counter through 555 timer or DAC pulses i got the correct output, but when i gave input of motor rotations through sensor im getting a set of differrent values.
Please help me to fix this problem.
Thanks in advance..
how do you get pulse from motor rotation?
which sensor u r using?
what is MAX RPM of ur motor?
wht is the MAX RPM limit that u can measure?
the solution to ur problem is hidden in the answers of these questions
Thank you for your reply @ A M Bhatt…
Im using Proximity sensor to get the pulses for rotation of the motor.
Maximum rpm of my motor is 1325.
But i didn’t get how to calculate the max. rpm i can measure. Please tell me how to calculate the max. rpm i can measure.
Hi,
You can slowly keep on increasing pulses from 555 and see till what speed controller is giving perfect output…!!