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

I have found the RPM signal wire which is a 5v output max.  So far, this is what I have :

RPM_signal      VAR     RB.4
RPM		VAR	Byte
COUNT RPM_signal, 30, RPM
IF RPM < 1 THEN
        RC = %00110000
ELSEIF RPM = 1 THEN
	RC = %01101110
ELSEIF RPM = 2 THEN
	RC = %01111010
ELSEIF RPM = 3 THEN
	RC = %00110011
ENDIF

I actually need to get it to read to the thousands.   I just need a variable to be equal to the exact value + - 100 RPM so I can use it in other areas of my program.  The program I have shown above will display a 1 if it is under 1000, 2 if it is under 2000, a 3 if it is under 3000 and so on.  I need it to read at least 500 RPM increments. The only problem I have now is that as I rev up the engine, the numbers will bounce back and forth when it reaches a close value for the next digit to be displayed.  I have no way of showing what RPM would be equal to while the engine is revving up.

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