How to Automatically Open a Cash Drawer in Loyverse POS (Android) ?

To open cash drawer automatically in Loyverse POS (Android) without POS receipt printer, you can use AT10U3 USB OTG Cash Drawer Trigger. This Trigger opens cash drawer via USB port of your Android tablet or mobile phone. The USB Type C cable comes with the Trigger allows direct connection to your mobile device. NO external power supply and external OTG adapter needed.

If you’re using Loyverse POS on an Android device and want to open the cash drawer without a receipt printer, the AT10U3 USB Cash Drawer Trigger is a reliable solution.

Key Features:

• Connects directly to your Android tablet or phone via USB Type-C use AT10U3 or AT10U3 Plug USB Cash Drawer Trigger
• No external power supply or OTG adapter required
• Opens the cash drawer through the USB port — fast and efficient

 AT10U3 Setup Instructions:

1. Plug in the AT10U3 USB Trigger to your Android device
2. In Loyverse POS, go to Settings > Printer
3. Select Printer Model: Other Model
4. Set Interface: USB:XXXX (where XXXX is the detected USB device name)

🔧 This configuration allows Loyverse to send the drawer-open command through the USB trigger, even without a traditional receipt printer.

AT10U3 Plus Setup Instructions:

1. Plug in the AT10U3 USB Trigger to your Android device
2. In Loyverse POS, go to Settings > Printer
3. Select Printer Model: Other Model
4. Set Interface: USB:XXXX (where XXXX is the detected USB device name)

🔧 This configuration allows Loyverse to send the drawer-open command through the USB trigger, even without a traditional receipt printer.

Setup Instructions for AT10U3 Plus USB Trigger with Loyverse POS (Android)

To enable automatic cash drawer opening in Loyverse POS using the AT10U3 Plus USB Trigger, follow these steps:

1. Connect the AT10U3 Plus USB Trigger to your Android device
2. Open Loyverse POS, then navigate to:
   • Settings > Printer
   • Select Printer Model: Other Model
   • Interface: USB:XXXX (replace XXXX with the detected USB device name)
3. Tap Advanced Settings and configure:
   • Print Mode: Text
   • Drawer ESC/POS Command Eg: (12,34,56,78)

🔧 This command sequence sends the signal to open the cash drawer. Ensure your  ESC/POS commands is right.

How to check cash drawer pin assignment ? 

1. (Right Meter) Check the Red Pin 2 and Pin 5  , Green Pin 4 wires  common on the solenoid shows a slight variation in readings.

2. (Left Meter) Check with the Pink  Pin 3 and Black Pin 6 wire shows a significant difference between cash drawer open and closed.

• This cash drawer routine supports standard Epson and Star POS printer pin configurations, as well as all Acode cash drawer triggers.
• Important: You must verify the your cash drawer’s solenoid voltage and pin assignment before connecting it to your receipt printer or POS terminal or Acode cash drawer triggers.