Printer Plugin USB OTG Mobile

Useful library to help Unity developers Android mobile to print with USB OTG thermal printers ESC/POS.

Only support for Android

Supports Unity 2020.3 LTS and above, including Unity 6.

Supports Device

● Printing method: Thermal printing method

● Commands: ESC/POS compatible

● Interface: USB OTG / USB cable

● Paper roll width: 80mm supported. Some 58mm printers may also work depending on the printer model.

Developed for SDK version 21 (Android 5.0 Lollipop) and above.

Download example

Tested printers

1. MUNBYN: Model ITPP047USEB-BK

2. Epson TM-m30

3. Xprinter

Feature:

- Print Text - Only supports print with latin characters

- Print Image, transparent image

- Print Barcode

- Print QRcode

- Print Feed or Feed by size

- Cut Paper

- Set format of text

- Open cash drawer

- Beep command

- Get printer status

- Start and end transaction

- Debug mode support

- Paper width helper values for 58mm, 80mm, and 110mm image printing

New in version 4.0

- Compatible with Unity 2020.3 LTS and newer, including Unity 6.

- Android AAR libraries are built with Java 8 compatible bytecode to avoid D8 dexing errors in Unity 2020.

- Example build settings are managed through Assets/PrinterPlugin/Editor/BuildConfig.asset.

- Example build menu is now package-aware and available under Tools/Printer Plugin/Example.

- Added native callbacks for printer status and error handling:

OnGetStatusCB

OnErrorCallbackCB

- Improved USB OTG connection handling with a dedicated Android USB permission receiver.

- Improved USB device interface and endpoint detection.

- Added background chunked transfer support.

- Added optional status listener support when the printer exposes an IN endpoint.

- Call PrinterConnectorUSB.Prepare() before printing if your app needs to check and ensure that the USB connection is ready.

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