pulse counter. you can (through a dec counter if necessary) count gpio high interrupts for some amount of time, and then guess the actual rpm. should be the interrupt rate * number of cylinders.
to display it you can do text or LED row, like rally cars, initially, before committing to expensive gauges
to display it you can do text or LED row, like rally cars, initially, before committing to expensive gauges
Statistics: Posted by wcl55 — Mon Sep 08, 2025 8:20 am