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package.json

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+{
+  "name": "myproducer",
+  "version": "1.0.0",
+  "description": "",
+  "main": "producer.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "amqplib": "^0.6.0",
+    "serialport": "^9.0.4"
+  }
+}

producer.js

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+//Requiered modules
+const amp = require('amqplib');
+const serialPort = require('serialport');
+
+//Serial port initialization
+var port = new serialPort('/dev/ttyUSB0', { baudRate: 9600, });
+
+//RabbitMQ Settings initialization
+const rabbitmqSettings = {
+    protocol: 'amqp',
+    hostname: 'localhost',
+    port: 5672,
+    username: 'iotproject',
+    password: 'iotproject',
+    vhost: '/',
+    authMechanism: ['PLAIN', 'AMQPLAIN', 'EXTERNAL']
+}
+
+//The main function (connect), implement all the functionality for the purpose of reading the serial port and send the data to the broker (tempValues) queue... 
+async function connect() {
+
+    const queue = 'tempValues'; //RabbitMQ queue name...
+
+    try {
+
+        //apply the RabbitMQ settings to create a link between the producer and the queue...
+        const conn = await amp.connect(rabbitmqSettings);
+        console.log("Connection Created...");
+
+        const channel = await conn.createChannel();
+        console.log("Channel Created...");
+
+        let res = await channel.assertQueue(queue);
+        console.log("Queue Created...");
+
+
+        //read the data from the serial port...
+        const Readline = serialPort.parsers.Readline;
+        const parser = new Readline();
+        port.pipe(parser);
+
+        port.on('open', function() {
+            console.log('port open...');
+        });
+
+        //create an empty object and fill it with the sensor name and the temp value...
+        parser.on('data', function(data) {
+            var tempValueObj = new Object();
+            tempValueObj.sensorName = "TMP36GZ";
+            tempValueObj.temperature = data.slice(0, -2);
+
+            //convert the object to JSON (requiered from the RabbitMQ broker)
+            channel.sendToQueue(queue, Buffer.from(JSON.stringify(tempValueObj)));
+            console.log(`Message sent to queue ${queue}`);
+        });
+        port.on('close', function() {
+            console.log('port closed');
+        });
+        port.on('error', function() {
+            console.log('something went wrong in serial communication');
+        });
+
+    } catch (error) {
+        console.log(`Error => ${error}`);
+    }
+}
+
+connect();