[crmd]

Cool stuff. You might enjoy this video[0] where Ben K. from Applied Science measures the RPM of his car engine via the cigarette lighter by measuring the inductive ignition spikes with an FFT on his scope.

[0] https://youtu.be/t0ToYhjYV9I

[ComputerGuru]

Thanks for sharing that! Aside from the excessive fawning over the scope that was a great video - I think it’s awesome that the result differed from expectations with the (spoiler alert!) DMC-12’s uneven firing pattern and made the whole thing more interesting.