ESP32 + MQTT + Node-RED

 ESP32 + MQTT + Node-RED

// MQTT Broker

const char *mqtt_broker = "broker.mqtt-dashboard.com";

const char *topic1 = "alex9ufo/esp32/led";

const char *topic2 = "alex9ufo/esp32/RFID";

const char *topic = "alex9ufo/esp32/Starting";

const char *topic3 = "alex9ufo/esp32/led_status";