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nodeMCU esp8266 12e Wifi module #arduinoproject #iot

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// #arduino #code
const int led1 = 2; // GPIO2 (D4) on ESP8266
const int led2 = 4; // GPIO4 (D2) on ESP8266
void setup() {
pinMode(led1, OUTPUT); // Set LED1 pin as output
pinMode(led2, OUTPUT); // Set LED2 pin as output
}
void loop() {
digitalWrite(led1, LOW); // Turn LED1 ON
digitalWrite(led2, HIGH); // Turn LED2 OFF
delay(1000); // Wait 1 second
digitalWrite(led1, HIGH); // Turn LED1 OFF
digitalWrite(led2, LOW); // Turn LED2 ON
delay(1000); // Wait 1 second
}
const int led1 = 2; // GPIO2 (D4) on ESP8266
const int led2 = 4; // GPIO4 (D2) on ESP8266
void setup() {
pinMode(led1, OUTPUT); // Set LED1 pin as output
pinMode(led2, OUTPUT); // Set LED2 pin as output
}
void loop() {
digitalWrite(led1, LOW); // Turn LED1 ON
digitalWrite(led2, HIGH); // Turn LED2 OFF
delay(1000); // Wait 1 second
digitalWrite(led1, HIGH); // Turn LED1 OFF
digitalWrite(led2, LOW); // Turn LED2 ON
delay(1000); // Wait 1 second
}
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