[arduino code examples for B2]-11 digital INPUT trigger OUTPUT directly

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Code:

/*
   Made by KinCony IoT
   https://www.kincony.com

   Demo: KinCony B2 DI Control Relay
   Board: KinCony B2 (ESP32)

   Digital Input 1 -> GPIO6
   Digital Input 2 -> GPIO7

   Relay 1 -> GPIO4
   Relay 2 -> GPIO46
*/

// Digital Inputs
#define DI1_PIN 6
#define DI2_PIN 7

// Relay Outputs
#define RELAY1_PIN 4
#define RELAY2_PIN 46

// Relay logic (Active LOW)
#define RELAY_ON  LOW
#define RELAY_OFF HIGH

// Store previous DI states
int lastDI1State;
int lastDI2State;

void setup()
{
  // Configure digital inputs
  pinMode(DI1_PIN, INPUT);
  pinMode(DI2_PIN, INPUT);

  // Configure relay outputs
  pinMode(RELAY1_PIN, OUTPUT);
  pinMode(RELAY2_PIN, OUTPUT);

  // Turn OFF relays at startup
  digitalWrite(RELAY1_PIN, RELAY_OFF);
  digitalWrite(RELAY2_PIN, RELAY_OFF);

  // Read initial input states
  lastDI1State = digitalRead(DI1_PIN);
  lastDI2State = digitalRead(DI2_PIN);

}

void loop()
{
  // Read current DI states
  int di1State = digitalRead(DI1_PIN);
  int di2State = digitalRead(DI2_PIN);

  // DI1 changed
  if (di1State != lastDI1State)
  {
    lastDI1State = di1State;

    if (di1State == HIGH)
    {
      digitalWrite(RELAY1_PIN, RELAY_ON);
    }
    else
    {
      digitalWrite(RELAY1_PIN, RELAY_OFF);
    }
  }

  // DI2 changed
  if (di2State != lastDI2State)
  {
    lastDI2State = di2State;

    if (di2State == HIGH)
    {
      digitalWrite(RELAY2_PIN, RELAY_ON);
    }
    else
    {
      digitalWrite(RELAY2_PIN, RELAY_OFF);
    }
  }

  // Small delay for stability
  delay(10);
}

arduino ino file download:

  11-input-trigger-output.zip (Size: 728 bytes / Downloads: 11)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

  11-input-trigger-output.ino.merged.zip (Size: 180 KB / Downloads: 9)