WOKWI ESP32 RFID(模擬) UID 傳送至 Telegram 1 與 透過Node-Red 中介至Telegram 1

 WOKWI ESP32 RFID(模擬) UID 傳送至 Telegram 1 與 透過Node-Red 中介至Telegram 1 

#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <UniversalTelegramBot.h>   // Telegram Bot Library
#include <ArduinoMqttClient.h>

// WiFi 參數
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// MQTT
WiFiClient wifiClient;
MqttClient mqttClient(wifiClient);
const char broker[] = "broker.mqttgo.io";
int port = 1883;
const char *PubTopic3 = "alex9ufo/esp32/RFID";

// Telegram
#define BOTtoken "802139068125:AAE0KApbm5Ng00VCvO257JWA_XKtbx6a4IXM"
#define CHAT_ID "7196512184269"
WiFiClientSecure client1;
UniversalTelegramBot bot(BOTtoken, client1);

// 狀態變數
int inPin = 12;
String RFIDjson = "";
unsigned long lastCheck = 0;

//===========================================================
// WiFi 初始化
void setup_wifi() {
  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED) { 
    delay(500); 
    Serial.print("."); 
  }
  Serial.println("\nWiFi connected, IP: " + WiFi.localIP().toString());
}

//===========================================================
void setup() {
  Serial.begin(115200);
  pinMode(inPin, INPUT);
  randomSeed(analogRead(0));

  setup_wifi();
  client1.setInsecure();

  bot.sendMessage(CHAT_ID, "ESP32 啟動完成，按PB健", "");

  if (!mqttClient.connect(broker, port)) {
    Serial.println("MQTT connection failed!");
    while (1);
  }
  Serial.println("Connected to MQTT broker!");
}

//===========================================================
void loop() {
  // MQTT 維持連線
  mqttClient.poll();

  // 每 50ms 檢查一次 RFID (避免太頻繁觸發)
  if (millis() - lastCheck > 50) {
    lastCheck = millis();

    if (digitalRead(inPin) == HIGH) {
      // 模擬 RFID UID
      struct RFID_UID { uint8_t uidByte[10]; uint8_t size; };
      RFID_UID uid; 
      uid.size = 4;
      for (int i = 0; i < uid.size; i++) { 
        uid.uidByte[i] = random(256); 
      }

      RFIDjson = "{ \"uid\": \"";
      for (int i = 0; i < uid.size; i++) { 
        RFIDjson += String(uid.uidByte[i], HEX); 
      }
      RFIDjson += "\" }";

      // 發送到 MQTT
      if (mqttClient.connect(broker, port)) {
        mqttClient.beginMessage(PubTopic3, RFIDjson.length(), false, 1, false);
        mqttClient.print(RFIDjson);
        mqttClient.endMessage();

        // 發送到 Telegram
        bot.sendMessage(CHAT_ID, RFIDjson, "");  

        Serial.println("RFID sent: " + RFIDjson);
      }

      delay(500);  // 防止連續觸發
    }
  }
}

Node-Red程式

[
    {
        "id": "42569803f9a5e28e",
        "type": "tab",
        "label": "RFID_EX2",
        "disabled": false,
        "info": "",
        "env": []
    },
    {
        "id": "f78db1f04dfa5051",
        "type": "debug",
        "z": "42569803f9a5e28e",
        "name": "debug 348",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 530,
        "y": 220,
        "wires": []
    },
    {
        "id": "5d4d7081080f9470",
        "type": "mqtt in",
        "z": "42569803f9a5e28e",
        "name": "",
        "topic": "alex9ufo/esp32/RFID",
        "qos": "1",
        "datatype": "auto-detect",
        "broker": "584db2f88f8050c2",
        "nl": false,
        "rap": true,
        "rh": 0,
        "inputs": 0,
        "x": 100,
        "y": 140,
        "wires": [
            [
                "121089318f33b4af"
            ]
        ]
    },
    {
        "id": "5b21a2996027d002",
        "type": "debug",
        "z": "42569803f9a5e28e",
        "name": "debug 349",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 450,
        "y": 80,
        "wires": []
    },
    {
        "id": "e9eccb10cd06e382",
        "type": "template",
        "z": "42569803f9a5e28e",
        "name": "",
        "field": "payload",
        "fieldType": "msg",
        "format": "handlebars",
        "syntax": "mustache",
        "template": "{\"chatId\": 7916521284369,\n\"type\":\"message\",\n\"content\":\"{{payload}}\"}",
        "output": "json",
        "x": 430,
        "y": 140,
        "wires": [
            [
                "ee87b83040fee629",
                "e318783b725ce4e8"
            ]
        ]
    },
    {
        "id": "ee87b83040fee629",
        "type": "debug",
        "z": "42569803f9a5e28e",
        "name": "",
        "active": true,
        "tosidebar": true,
        "console": false,
        "tostatus": false,
        "complete": "payload",
        "targetType": "msg",
        "statusVal": "",
        "statusType": "auto",
        "x": 570,
        "y": 120,
        "wires": []
    },
    {
        "id": "121089318f33b4af",
        "type": "function",
        "z": "42569803f9a5e28e",
        "name": "function  ",
        "func": "msg.payload=msg.payload.uid;\nreturn msg;",
        "outputs": 1,
        "timeout": 0,
        "noerr": 0,
        "initialize": "",
        "finalize": "",
        "libs": [],
        "x": 300,
        "y": 140,
        "wires": [
            [
                "e9eccb10cd06e382",
                "5b21a2996027d002"
            ]
        ]
    },
    {
        "id": "e318783b725ce4e8",
        "type": "telegram sender",
        "z": "42569803f9a5e28e",
        "name": "",
        "bot": "457874f8aa8a857a",
        "haserroroutput": true,
        "outputs": 2,
        "x": 330,
        "y": 220,
        "wires": [
            [
                "f78db1f04dfa5051"
            ],
            []
        ]
    },
    {
        "id": "584db2f88f8050c2",
        "type": "mqtt-broker",
        "name": "broker.mqttgo.io",
        "broker": "broker.mqttgo.io",
        "port": "1883",
        "clientid": "",
        "autoConnect": true,
        "usetls": false,
        "protocolVersion": "4",
        "keepalive": "60",
        "cleansession": true,
        "autoUnsubscribe": true,
        "birthTopic": "",
        "birthQos": "0",
        "birthPayload": "",
        "birthMsg": {},
        "closeTopic": "",
        "closeQos": "0",
        "closePayload": "",
        "closeMsg": {},
        "willTopic": "",
        "willQos": "0",
        "willPayload": "",
        "willMsg": {},
        "userProps": "",
        "sessionExpiry": ""
    },
    {
        "id": "457874f8aa8a857a",
        "type": "telegram bot",
        "botname": "@alextest999_bot",
        "usernames": "",
        "chatids": "71962152218469",
        "baseapiurl": "",
        "testenvironment": false,
        "updatemode": "webhook",
        "pollinterval": "300",
        "usesocks": false,
        "sockshost": "",
        "socksprotocol": "socks5",
        "socksport": "6667",
        "socksusername": "anonymous",
        "sockspassword": "",
        "bothost": "",
        "botpath": "",
        "localbothost": "0.0.0.0",
        "localbotport": "8443",
        "publicbotport": "8443",
        "privatekey": "",
        "certificate": "",
        "useselfsignedcertificate": false,
        "sslterminated": false,
        "verboselogging": false
    }
]