SK58 Printer Flutter App

A cross-platform Flutter application for printing QR code labels and custom text on Sinmark SK58 (or compatible) Bluetooth thermal printers. This is a sample app.

Features

• Scan and connect to Bluetooth SK58 printers (and compatible models)
• Print QR codes and custom text labels
• Cross-platform support (Linux and Android)
• Real-time connection status and error feedback
• Clean, modern Material Design interface

Screenshots

(Coming soon)

Getting Started

Prerequisites

• Flutter SDK (latest stable)
• A Sinmark SK58 or compatible Bluetooth thermal printer
• Linux or Android device
• Bluetooth LE support

Installation

1. Clone this repository:

   git clone https://github.com/mosulache/sk58-printer-flutter.git
   cd sk58-printer-flutter

2. Install dependencies:

   flutter pub get

3. Run the app:

   flutter run

Usage

1. Ensure your SK58 printer is powered on and Bluetooth is enabled
2. Enter the text you want to print (this will be encoded as a QR code)
3. Tap "Scan Bluetooth Devices" and select your printer
4. Once connected, tap "Print Label" to generate and print your QR code label

Tech Stack

• Flutter
• universal_ble (Bluetooth LE communication)
• qr_flutter (QR code generation)
• permission_handler (runtime permissions)

Platform Support

• ✅ Android: Fully supported
• ✅ Linux: Supported (requires Bluetooth LE)
• ⚠️ Other platforms: Untested

Troubleshooting

• Android: Grant all required Bluetooth and location permissions
• Linux: Ensure Bluetooth service is running (bluetoothd)
• General: Printer should be powered on and not connected to other devices

License

TBD

Built with Flutter and attitude. Issues? Open one on GitHub, let's solve it together!