mbed-os VS ultrasonic-poc

I see that the kl05 target was removed in os6 but it is present in os5.

It looks like both mbed: https://github.com/ARMmbed/mbed-os/pull/14488

View various projects on github in the area of your choice. Select a project you like and look into open issues. For eg https://github.com/ARMmbed/mbed-os seems to have 166 issues ongoing. Choose one!

Most of my interaction with mbed was when it a massive pita since it was still closed source.. I do have one interaction with the project since they opened it though

ARM Mbed OS – Update available

That's why I don't use them for anything fancy

Heh, ultrasonic phase offset can be done with an Arduino's analog comparator (NOT the ADC which is too slow) - here's one I prepared earlier

hackaday.com has a zillion links to examples; here's one two three four of mine and I've also got a laundry list of companies I've helped but whose technical details I can't legally publish (note that I've assisted many but not all of the companies in that link)

HC-SR04 can't, but the transducers on it can - here's a proof-of-concept I threw together a while ago to play with them, although you may want a capacitor in series with R6 if you want it to work over longer distances than ~10cm or so

PS: https://github.com/triffid/ultrasonic-poc may interest you ;)

If you're curious here's a couple of my AVR projects (not using Arduino libraries at all), and here's an NRF52 one

ChatGPT often gets stuff wrong and likely can't handle more advanced programming techniques (eg this sort of thing), so it's only going to be useful for basic stuff and shouldn't be used beyond your ability to critically analyze or debug code.

Does this proof of concept where I get absurd precision (at short range) from a couple ultrasonic transducers salvaged from a HC-SR04 and a few resistors count?

Here's a random proof-of-concept I threw together a while ago for super precise ultrasonic wind speed measurement (or very short distances) - it uses the analog comparator plugged into timer input compare for phase analysis, which is where the precision comes from.