Thanks for the explanation

Hmm, perhaps the pulse-width is too small for properly detecting both edges? I want only count the number of pulse But why do you need both edges? Is the duration of the pulse of any significance? I need only one edge, but I tried with "pulse low" and in a second test with "pulse hig...

Blue signal is input from my photo-diode, so is not relevant here. Yes, the red scale is the for the red signal. So what to put in "Debounce Time" to disable the debounce filter ? put in 0? If I use the falling mode it seems that the count is correct. But if I use PULSE Low or PULSE High, ...

I use espeasy on a esp32board to count pulse coming from a power meter) The signal (red line) on the GPIO is: 20220811-0001.png and i get from 1 to 20 pulse every 10s with the mode set as "falling" it works and seems to count correctly Capture.PNG but with the mode set to "PULSE low&q...