Arduino debug simple setup

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The problem: The solonoid valve does not turn off. The voltage on mosfet module output goes from 4.2 V to 4.8 V when motion is detected. It does not goes to 0V and thereby closes the valve.

What have i done wrong?

I have a simple setup:

- Pir sensor AM312

- Nodemcu /ESP (powered by usb)

- Mosfet module IRF520

- Solonoid valve 4.5V

- External power supply connected to Mosfet 5V, 1A

I'm using the following code:

const int pirPin = D5; // PIR sensor pin

const int mosfetPin = D6; // Connect to the IN/Input terminal on the MOSFET module

void setup() {

[login to view URL](115200);

pinMode(pirPin, INPUT);

pinMode(mosfetPin, OUTPUT);

[login to view URL]("PIR Motion Sensor with Solenoid Valve Control");

}

void loop() {

int motionDetected = digitalRead(pirPin);

if (motionDetected == HIGH) {

[login to view URL]("Motion Detected - Activating Solenoid");

digitalWrite(mosfetPin, HIGH); // Send signal to the MOSFET module to activate the solenoid

delay(2000); // Keep solenoid active for 2 seconds

digitalWrite(mosfetPin, LOW); // Deactivate the solenoid

} else {

[login to view URL]("No Motion Detected");

}

delay(10000); // Wait for 10 seconds before rechecking

}

Arduino Điện tử Vi điều khiển Kĩ thuật điện Lập trình C

ID dự án: #38015830

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