No problem, I’ve learned a bit since asking the previous question, so I’ll try:
1.) A -FAST module has a rise/fall time of 25us (40kHz), so I would expect the fastest possible frequency it can reliably detect would be 20kHz, correct?
2.) Assuming I’d want to get something to work on my R2 brain, even if I did use a -FAST module to accurately detect the frequency, would I also need to make sure my frequency-counting chart was running fast enough to parse this?
3.) Is an R1 brain with the frequency function built-in a better solution? All my (5) opto’s on-site are R1 except for the single R2 I just happened to be starting with when I joined the team. We’re inclined to simply not use an R2 again if we need frequency measurement
On the plus side I think I’m making things more complicated than they need to be, but I’m not sure yet