I can't use RPM Measure with mqtt

[jaytnw]

I wana publish rpm to broker but it reboot all the time when read HIGH. What should I do? please.

[khoih-prog]

There is some issue in your code causing crash. Without MRE, I don't think anybody can have the good crystal ball to know where the issue is.

Anyway, the basic rule is not to do complex and time-consuming jobs inside ISR. Have a look at the example RPM_Measure.ino#L149-L157 and see how to display / publish RPM inside the loop()

Also check Important Notes

Please ask for help in Arduino or ESP32 forum because this is not caused by a bug of this library.