Automatic Washing Machine Bluetooth Based Circuit

[dragonzone]

Hi All!,

If I make any mistake I apologize in advance. I don't have much electornics knowledge learned whatever I know is learned through this forum and google.

I am working on circuit and want to read frequency of sensor: Kps-59-C/Kps-61-C Digital Water Level Pressure Sensor for Whirlpool Top Load Washing Machine - China Liquid Level Sensor and Electronic Level Sensor price

Downloaded this library in Arduino IDE: FreqCount Library, for Measuring Frequencies in the 1 kHz to 5 MHz Range

Circuit Diagram:

My Code:

#include <FreqCount.h>

void setup() {
  Serial.begin(9600);
  FreqCount.begin(1000);
}

void loop() {
  if (FreqCount.available()) {
    unsigned long count = FreqCount.read();
    Serial.println(count);
  }
}

Output:

0
0
0
0
....

Can anyone guide me what I have done wrong here?

[kolaha]

input pin has diode to protect pin from negative polarity.
pin 5 is a digital pin, that mean Voltage over 3V count as HIGH and under 2V as LOW.
Are you sure the measured signal reach over 3V?

[kolaha]

your link contain this

[dragonzone]

It was under 1 volt default will have to verify after connecting sensor

[dragonzone]

That link is just for share library actual cricuit diagram which I am using is attached in problem statement having green circle highlighted as sensor

[sterretje]

@dragonzone , your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project.

[dragonzone]

Thank you and apologize for the inconvenience

[dragonzone]

and just to be clear if you check FreqCount library page they have mentioned for Arduino Uno it will read frequency at pin 5