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sjnayem June 26, 2025 0 In Uncategorized

Build a Matter-Enabled Lightbulb with the Arduino Nano Matter

pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, LED_BUILTIN_INACTIVE);

  pinMode(RELAY, OUTPUT);
  digitalWrite(RELAY, LOW);

  Serial.println("Matter lightbulb");

  if (!Matter.isDeviceCommissioned()) {
    Serial.println("Matter device is not commissioned");
    Serial.println("Commission it to your Matter hub with the manual pairing code or QR code");
    Serial.printf("Manual pairing code: %s\n", Matter.getManualPairingCode().c_str());
    Serial.printf("QR code URL: %s\n", Matter.getOnboardingQRCodeUrl().c_str());
  }
  while (!Matter.isDeviceCommissioned()) {
    delay(200);
  }

  Serial.println("Waiting for Thread network...");
  while (!Matter.isDeviceThreadConnected()) {
    delay(200);
    decommission_handler();
  }
  Serial.println("Connected to Thread network");

  Serial.println("Waiting for Matter device discovery...");
  while (!matter_bulb.is_online()) {
    delay(200);
    decommission_handler();
  }
  Serial.println("Matter device is now online");
}

void loop()
{
  decommission_handler();
  static bool matter_lightbulb_last_state = false;
  bool matter_lightbulb_current_state = matter_bulb.get_onoff();

  // If the current state is ON and the previous was OFF - turn on the LED
  if (matter_lightbulb_current_state && !matter_lightbulb_last_state) {
    matter_lightbulb_last_state = matter_lightbulb_current_state;
    digitalWrite(LED_BUILTIN, LED_BUILTIN_ACTIVE);
    digitalWrite(RELAY, HIGH);
    Serial.println("Bulb ON");
  }

  // If the current state is OFF and the previous was ON - turn off the LED
  if (!matter_lightbulb_current_state && matter_lightbulb_last_state) {
    matter_lightbulb_last_state = matter_lightbulb_current_state;
    digitalWrite(LED_BUILTIN, LED_BUILTIN_INACTIVE);
    digitalWrite(RELAY, LOW);
    Serial.println("Bulb OFF");
  }
}

void decommission_handler()
{
  // If the button is not pressed or the device is not commissioned - return
  if (digitalRead(BTN_BUILTIN) != LOW || !Matter.isDeviceCommissioned()) {
    return;
  }

  // Store the time when the button was first pressed
  uint32_t start_time = millis();
  // While the button is being pressed
  while (digitalRead(BTN_BUILTIN) == LOW) {
    // Calculate the elapsed time
    uint32_t elapsed_time = millis() - start_time;
    // If the button has been pressed for less than 10 seconds, continue
    if (elapsed_time < 10000u) {
      yield();
      continue;
    }

    // Blink the LED to indicate the start of the decommissioning process
    for (uint8_t i = 0u; i < 10u; i++) {
      digitalWrite(LED_BUILTIN, !(digitalRead(LED_BUILTIN)));
      delay(100);
    }

    Serial.println("Starting decommissioning process, device will reboot...");
    Serial.println();
    digitalWrite(LED_BUILTIN, LED_BUILTIN_INACTIVE);
    // This function will not return
    // The device will restart once decommissioning has finished
    Matter.decommission();
  }
}

pinMode(LED_BUILTIN, OUTPUT);

digitalWrite(LED_BUILTIN, LED_BUILTIN_INACTIVE);

pinMode(RELAY, OUTPUT);

digitalWrite(RELAY, LOW);

Serial.println("Matter lightbulb");

if (!Matter.isDeviceCommissioned()) {

Serial.println("Matter device is not commissioned");

Serial.println("Commission it to your Matter hub with the manual pairing code or QR code");

Serial.printf("Manual pairing code: %s\n", Matter.getManualPairingCode().c_str());

Serial.printf("QR code URL: %s\n", Matter.getOnboardingQRCodeUrl().c_str());

}

while (!Matter.isDeviceCommissioned()) {

delay(200);

}

Serial.println("Waiting for Thread network...");

while (!Matter.isDeviceThreadConnected()) {

delay(200);

decommission_handler();

}

Serial.println("Connected to Thread network");

Serial.println("Waiting for Matter device discovery...");

while (!matter_bulb.is_online()) {

delay(200);

decommission_handler();

}

Serial.println("Matter device is now online");

}

void loop()

{

decommission_handler();

static bool matter_lightbulb_last_state = false;

bool matter_lightbulb_current_state = matter_bulb.get_onoff();

// If the current state is ON and the previous was OFF - turn on the LED

if (matter_lightbulb_current_state && !matter_lightbulb_last_state) {

matter_lightbulb_last_state = matter_lightbulb_current_state;

digitalWrite(LED_BUILTIN, LED_BUILTIN_ACTIVE);

digitalWrite(RELAY, HIGH);

Serial.println("Bulb ON");

}

// If the current state is OFF and the previous was ON - turn off the LED

if (!matter_lightbulb_current_state && matter_lightbulb_last_state) {

matter_lightbulb_last_state = matter_lightbulb_current_state;

digitalWrite(LED_BUILTIN, LED_BUILTIN_INACTIVE);

digitalWrite(RELAY, LOW);

Serial.println("Bulb OFF");

}

void decommission_handler()

{

// If the button is not pressed or the device is not commissioned - return

if (digitalRead(BTN_BUILTIN) != LOW || !Matter.isDeviceCommissioned()) {

return;

}

// Store the time when the button was first pressed

uint32_t start_time = millis();

// While the button is being pressed

while (digitalRead(BTN_BUILTIN) == LOW) {

// Calculate the elapsed time

uint32_t elapsed_time = millis() - start_time;

// If the button has been pressed for less than 10 seconds, continue

if (elapsed_time < 10000u) {

yield();

continue;

}

// Blink the LED to indicate the start of the decommissioning process

for (uint8_t i = 0u; i < 10u; i++) {

digitalWrite(LED_BUILTIN, !(digitalRead(LED_BUILTIN)));

delay(100);

}

Serial.println("Starting decommissioning process, device will reboot...");

Serial.println();

digitalWrite(LED_BUILTIN, LED_BUILTIN_INACTIVE);

// This function will not return

// The device will restart once decommissioning has finished

Matter.decommission();

}

int soilMoistureValue = 0;
int percentage=0;
void setup() {
  pinMode(3,OUTPUT);
  Serial.begin(9600);
}
void loop() {
soilMoistureValue = analogRead(A0);
Serial.println(percentage);
percentage = map(soilMoistureValue, 490, 1023, 100, 0);
if(percentage < 10)  
{
  Serial.println(" pump on");
  digitalWrite(3,LOW);
}
if(percentage >80)
{
  Serial.println("pump off");
  digitalWrite(3,HIGH);
}
}

int soilMoistureValue = 0;

int percentage=0;

void setup() {

pinMode(3,OUTPUT);

Serial.begin(9600);

}

void loop() {

soilMoistureValue = analogRead(A0);

Serial.println(percentage);

percentage = map(soilMoistureValue, 490, 1023, 100, 0);

if(percentage < 10)

{

Serial.println(" pump on");

digitalWrite(3,LOW);

}

if(percentage >80)

{

Serial.println("pump off");

digitalWrite(3,HIGH);

}

int soilMoistureValue = 0;
int percentage=0;
void setup() {
  pinMode(3,OUTPUT);
  Serial.begin(9600);
}
void loop() {
soilMoistureValue = analogRead(A0);
Serial.println(percentage);
percentage = map(soilMoistureValue, 490, 1023, 100, 0);
if(percentage < 10)  
{
  Serial.println(" pump on");
  digitalWrite(3,LOW);
}
if(percentage >80)
{
  Serial.println("pump off");
  digitalWrite(3,HIGH);
}
}

int soilMoistureValue = 0;

int percentage=0;

void setup() {

pinMode(3,OUTPUT);

Serial.begin(9600);

}

void loop() {

soilMoistureValue = analogRead(A0);

Serial.println(percentage);

percentage = map(soilMoistureValue, 490, 1023, 100, 0);

Muhammad Parvez June 26, 2025 0 In Uncategorized

Automatic Irrigation System using Arduino Uno

🌱 Automatic Irrigation System Using Arduino Uno

Efficient water management is crucial for sustainable agriculture and gardening. In this project, we’ll build a simple but effective automatic irrigation system using an Arduino Uno, a soil moisture sensor, and a water pump.

This system waters your plants only when they need it, saving water and ensuring healthy growth.

🔧 Components Required

Component	Quantity
Arduino Uno	1
Soil Moisture Sensor	1
Relay Module (5V)	1
Water Pump (DC)	1
Jumper Wires	As needed
Breadboard	1
12V Battery or Power Supply	1

⚙️ Working Principle

The soil moisture sensor detects the moisture level in the soil:

If the soil is dry, the Arduino turns on the relay, which powers the water pump.
If the soil is wet, the pump stays off.

🔌 Circuit Connections

Soil Moisture Sensor:

VCC → 5V (Arduino)
GND → GND (Arduino)
AO → A0 (Arduino)

Relay Module:

IN → D7 (Arduino)
VCC → 5V (Arduino)
GND → GND (Arduino)

Water Pump:

Connected to relay output (NO and COM terminals)
Power the pump using external 12V battery (not directly from Arduino)

/*💻 Arduino Code

// Automatic Irrigation System using Arduino Uno const int sensorPin = A0; // Soil Moisture Sensor connected to A0 const int relayPin = 7; // Relay Module connected to D7 int moistureThreshold = 400; // Adjust this based on your soil type void setup() { pinMode(sensorPin, INPUT); pinMode(relayPin, OUTPUT); Serial.begin(9600); } void loop() { int moistureLevel = analogRead(sensorPin); Serial.print("Soil Moisture Level: "); Serial.println(moistureLevel); if (moistureLevel < moistureThreshold) { digitalWrite(relayPin, HIGH); // Turn ON the water pump Serial.println("Soil is dry. Watering plants..."); } else { digitalWrite(relayPin, LOW); // Turn OFF the water pump Serial.println("Soil is wet. No need to water."); } delay(2000); // Wait for 2 seconds before reading again } */</span></h3>
<h3><span style="font-family: Consolas, Monaco, monospace; font-size: 16px;">

// Automatic Irrigation System using Arduino Uno const int sensorPin = A0; // Soil Moisture Sensor connected to A0 const int relayPin = 7; // Relay Module connected to D7 int moistureThreshold = 400; // Adjust this based on your soil type void setup() { pinMode(sensorPin, INPUT); pinMode(relayPin, OUTPUT); Serial.begin(9600); } void loop() { int moistureLevel = analogRead(sensorPin); Serial.print("Soil Moisture Level: "); Serial.println(moistureLevel); if (moistureLevel < moistureThreshold) { digitalWrite(relayPin, HIGH); // Turn ON the water pump Serial.println("Soil is dry. Watering plants..."); } else { digitalWrite(relayPin, LOW); // Turn OFF the water pump Serial.println("Soil is wet. No need to water."); } delay(2000); // Wait for 2 seconds before reading again } */</span></h3>

📸 Demo

You can include a video or photo showing:

The soil drying
The pump turning on automatically
Water being poured into the soil
Pump turning off once the soil is moist

⚠️ Precautions

Use a transistor or relay module to switch the pump, never drive a motor directly from the Arduino.
Make sure the pump’s power source is appropriate for its voltage.
Protect the soil sensor from corrosion by using capacitive types for long-term projects.

🌾 Applications

Home garden automation
Smart farming for small fields
IoT-based agriculture systems (you can expand with GSM or Wi-Fi modules)

🔄 Future Improvements

Add an LCD display to show moisture level.
Use Wi-Fi (ESP8266) or GSM to control it remotely.
Implement solar power for fully off-grid usage.

Main Menu

Build a Matter-Enabled Lightbulb with the Arduino Nano Matter

Automatic Irrigation System using Arduino Uno

🌱 Automatic Irrigation System Using Arduino Uno

🔧 Components Required

⚙️ Working Principle

🔌 Circuit Connections

Soil Moisture Sensor:

Relay Module:

Water Pump:

/*💻 Arduino Code

📸 Demo

⚠️ Precautions

🌾 Applications

🔄 Future Improvements

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🌱 Automatic Irrigation System Using Arduino Uno

🔧 Components Required

⚙️ Working Principle

🔌 Circuit Connections

Soil Moisture Sensor:

Relay Module:

Water Pump:

/*💻 Arduino Code

📸 Demo

⚠️ Precautions

🌾 Applications

🔄 Future Improvements

Product tags

CONTACT INFO.

POLICES

INFORMATIONS

STAY INFORMED BY NEWSLETTER