How to Use Relevo 4 canales: Examples, Pinouts, and Specs

The Relevo 4 Canales is a module that contains four relays, allowing the control of four independent circuits using low-power signals. This component is widely used in applications where it is necessary to control high-power devices with a microcontroller or other low-power control systems. Common use cases include home automation, industrial control systems, and robotics.

1. Power Supply: Connect the VCC pin to a 5V DC power supply and the GND pin to the ground of your circuit.
2. Control Signals: Connect the IN1, IN2, IN3, and IN4 pins to the digital output pins of your microcontroller (e.g., Arduino UNO).
3. Relay Outputs: Connect the devices you want to control to the relay terminals (NO, COM, NC) according to your requirements.

• Isolation: Ensure proper isolation between the low-power control side and the high-power relay side to prevent damage to your microcontroller.
• Flyback Diode: Use flyback diodes across relay coils to protect against voltage spikes.
• Current Rating: Do not exceed the maximum current rating of 10A for each relay.
• Active Low: The control signals are active low, meaning the relay is activated when the control pin is pulled to ground.

// Example code to control a 4-channel relay module with Arduino UNO

// Define relay control pins
const int relay1 = 2;
const int relay2 = 3;
const int relay3 = 4;
const int relay4 = 5;

void setup() {
  // Initialize relay control pins as outputs
  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);
  pinMode(relay3, OUTPUT);
  pinMode(relay4, OUTPUT);

  // Turn off all relays at the start
  digitalWrite(relay1, HIGH);
  digitalWrite(relay2, HIGH);
  digitalWrite(relay3, HIGH);
  digitalWrite(relay4, HIGH);
}

void loop() {
  // Example sequence to turn on and off relays
  digitalWrite(relay1, LOW);  // Turn on Relay 1
  delay(1000);                // Wait for 1 second
  digitalWrite(relay1, HIGH); // Turn off Relay 1
  delay(1000);                // Wait for 1 second

  digitalWrite(relay2, LOW);  // Turn on Relay 2
  delay(1000);                // Wait for 1 second
  digitalWrite(relay2, HIGH); // Turn off Relay 2
  delay(1000);                // Wait for 1 second

  digitalWrite(relay3, LOW);  // Turn on Relay 3
  delay(1000);                // Wait for 1 second
  digitalWrite(relay3, HIGH); // Turn off Relay 3
  delay(1000);                // Wait for 1 second

  digitalWrite(relay4, LOW);  // Turn on Relay 4
  delay(1000);                // Wait for 1 second
  digitalWrite(relay4, HIGH); // Turn off Relay 4
  delay(1000);                // Wait for 1 second
}

1. Relays Not Activating: Ensure that the control signals are correctly connected and that the VCC and GND pins are properly powered.
2. Noise and Interference: Use proper decoupling capacitors and ensure good grounding practices to minimize noise.
3. Overheating: Do not exceed the maximum current rating of the relays. Use heat sinks if necessary.

• Check Connections: Verify all connections, especially the control signals and power supply.
• Use a Multimeter: Measure the voltage at the control pins to ensure they are being pulled low correctly.
• Inspect for Damage: Look for any visible damage on the module or relays that might indicate a failure.

By following this documentation, users should be able to effectively integrate and utilize the Relevo 4 Canales module in their projects, ensuring reliable and efficient control of multiple circuits.