A simple terminal utility built with Node.js that:

• Lists available serial ports on your system
• Lets you choose a port to connect
• Supports three data reading modes: raw, text, or byte
• Displays incoming serial data in a clean, color-coded format

• Node.js Installed
• Make sure you have the necessary permissions to access serial ports on your system.

1. Clone or download this repository.

git clone https://github.com/CoderLovely08/node-serial-port-reader
cd node-serial-port-reader

1. Install dependencies:

npm install

Run the script using Node:

npm start

You will be prompted to:

1. Choose a serial port from the available list.

2. Select a data reading mode:

   • raw – Show raw Buffer output
   • text – Read line-by-line as text (delimited by \r\n)
   • byte – Read fixed-length byte chunks (you choose the byte length)

🔌 Available Serial Ports:
1: /dev/tty.usbserial-110 - FTDI
2: /dev/tty.Bluetooth-Incoming-Port - Apple Inc.

Select a port by number: 1
Choose data reading mode (raw / text / byte): text

✅ Port opened on /dev/tty.usbserial-110
📄 Text Data: Temperature: 24.3°C
📄 Text Data: Temperature: 24.5°C

Select a port by number: 1

⚙️  Choose a Baud Rate:
1: 9600
2: 19200
3: 38400
4: 57600
5: 115200
c: Custom baud rate

Enter option number or 'c' for custom: 5
✅ Baud rate set to 115200

You can modify the baud rate and other serial port settings in app.js:

const port = new SerialPort({
  path: selectedPortPath,
  baudRate: 9600,
  dataBits: 8,
  stopBits: 1,
  parity: "none",
});

• No serial ports listed?

  • Ensure your device is plugged in.
  • Check USB permissions on Linux/macOS.

• Permission denied on macOS/Linux?

  • Try running with sudo, or add your user to the dialout group.

• Add support for saving data to a file
• Add timestamped logs
• Build a GUI with Electron or WebSocket interface