Hello, I want to record the instantaneous value received from a connected sensor as a threshold value 10 seconds after my esp32 card is powered on and then compare it with the values ​​from the same sensor. This threshold value should be deleted after the power is cut off, and the threshold value sh...

Yes, I solved the problem. I was really happy too. As you mentioned in your previous comments, there can be erroneous counts when the sampling time is set to low values. In my test, the count of frequencies less than 50hz below 100000 microseconds is wrong. I can accurately count the frequency value...

Thanks Gustavo, have solved this problem according to your suggestions.

Dear jgustavoam, unfortunately there is something wrong again. I am currently working with your original code. If you don't help, I will have to stay in front of the computer until the morning and sleep during the day. :) uint32_t sample_time = 1000; uint32_t osc_freq = 50; When I set it to, on the ...

thanks for the answer. I tested it without making any changes to the program. frequency line transitions on the monitor at 1 second intervals.

Ok jgustavoam. I found what is causing the wrong frequency measurement. in the original code; uint32_t overflow = 20000; Although, i then this line; uint32_t overflow = 1500; I changed it to. I fixed it now and the count is correct. Despite this, unfortunately, the problem of the refresh rate of the...

Hi jgustavoam. No, I wanted to use the frequency counter in a generic code. I rearranged the pins according to the Firebeetle ESP32-e card. As I said, there is a problem with the IDE monitor. I am attaching the code. I defined pin D7 (13) for osc output. When I measure this pin with an oscilloscope,...

Hi jgustavoam, Frequency refresh while checking code execution on ide monitor I see that the intervals are 1sec. Frequency: 0 Hz Frequency: 0 Hz Frequency: 0 Hz ........................... I wonder if this time is valid on the LCD screen as well. Therefore, even though I removed the delay(100) below...

Thanks a lot for your answere.

Hello, I want to receive sound at various frequencies from the passive buzzer whose + end is connected to pin 4 (D12) of firebeetle esp32-e. However, I was never able to do that. When I measure the frequency on the pin, I usually see fluctuations between 50hz and 80hz. Where could I be doing wrong? ...