After about 30 minutes of fiddling, a 10K ohm resister turned out to be the best at filtering out the noise without cutting off the signal entirely. You can see a huge difference in the graph below (again, yellow plot).
Monday, June 16, 2008
Refinement
Not being one to leave well enough alone, I set about trying to improve my erratic RPM signal. As you can see in this picture, the RPM (yellow plot, top graph) the Megasquirt has been reading has been really choppy. This can be due to lots of reasons, but the biggest is noise getting into the signal line.
After about 30 minutes of fiddling, a 10K ohm resister turned out to be the best at filtering out the noise without cutting off the signal entirely. You can see a huge difference in the graph below (again, yellow plot).
After about 30 minutes of fiddling, a 10K ohm resister turned out to be the best at filtering out the noise without cutting off the signal entirely. You can see a huge difference in the graph below (again, yellow plot).
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