In SX Microcontrollers, SX/B Compiler and SX-Key Tool, eagletalontim wrote:

Well, I have been using COUNT 300 as an alternative which appears to be 100% accurate to the RPM code Bean had posted but much slower.  Bean's code used up way too much space so I had to find an alternative.  By adding 10 to the 300, it makes the displayed RPM match the Tach.

Ok, so lets see if I have this right....

There appears to be 2 pulses per rpm since using COUNT 300 instead of 600 is accurate.

I am trying to use Bytes as the variable returned from the PULSIN statements to preserve space so I am not sure how accurate it will be in a wide range of RPM's.

PULSIN high and PULSIN low @ 30 microseconds added together and then divided into 100 and would give me a pretty accurate RPM?  It is dark outside so I cannot test anything right now :(

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