Just wanted to update this. After hours of designing/testing/coding/etc I now have the RPM monitoring feature working "on the test bench". Its not quite ready to implement into the production lockup controllers yet, but I just wanted to give an update and prove that it
is very close, and I havent forgotten about it.
Also wanted to show how it works
properly, and ive designed the circuit/written the software properly so there is no erratic operation of the factory tach/cluster, and no check engine light/codes.
"w2" on the laptop screen is the RPM value as being reported by the lockup controller's CPU in real-time. It is accurate +/-10rpm. The reason it looks like its slow on the laptop screen is simply because the databus that my lockup controller talks on is kinda slow.
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Ben