lpcware

LPC1769 QEI rpm measurement

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Shoaib on Tue Aug 05 12:58:59 MST 2014
Hi everyone,

I was trying to implement a basic code for rpm measurement but came across a couple of problems.

1)  I am connecting a DC motor to the power supply and measuring the rpm values in my code. The rpm values are reducing for higher supply voltages. If the power supply is 10 V the rpm value is around 180 and for 15V it reduces to 90.
2) Moreover the measured rpm is alternating between two values. For example for 10V supply i receive 180 and 220 as the rpm values.

Thanks!

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Original Attachment has been moved to: New%20Text%20Document_0.txt.zip

Original Attachment has been moved to: New%20Text%20Document_0.txt.zip

Original Attachment has been moved to: New%20Text%20Document_0.txt.zip

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