# Printer and devices

> Connect a Bluetooth or USB receipt printer, open the cash drawer, scan barcodes and show the cart on a customer display.

Source: https://docs.bakasir.com/en/docs/android/printer-and-devices

Video tutorial (2:28): [Android: printer and devices](https://media.bakasir.com/bakasir-media/docs-video/android-printer-and-devices/android-printer-and-devices.mp4), subtitles: https://media.bakasir.com/bakasir-media/docs-video/android-printer-and-devices/android-printer-and-devices.en.vtt



Open **Devices** to connect the equipment at your counter. This tutorial sets up a receipt printer and tests the cash drawer connected to it. It takes about 4 minutes.

## Before you start

- A thermal receipt printer (ESC/POS type), switched on and with paper.
- For **Bluetooth**, the printer is already paired in the Android Bluetooth settings.
- For **USB**, the printer is connected to the device with a USB cable (OTG adapter if needed).
- You are signed in on the terminal. Any signed in cashier can open Devices.

## Steps




### Open Devices

On the Home screen, tap the **Devices** tile (**Printer, scanner, drawer**).




### Choose how the printer connects

Under **Receipt printer** and **Connection**, choose **USB** or **Bluetooth**. **None** turns printing off.




### Allow access

For Bluetooth, tap **Allow Bluetooth** when Android asks, and turn Bluetooth on if it is off. For USB, accept the access request that Android shows when you pick the printer.




### Find and pick the printer

Tap **Find printers**. The list **Available printers** appears. Tap your printer. The screen then says **Selected** and its name. If it says **No printers found**, check the cable or pair the printer in Android settings first.




### Set paper and copies

Under **Paper width**, choose **58 mm** or **80 mm**, or **Store setting** to use the width set in the Portal. Set **Copies** with the plus and minus buttons.




### Choose printing options

Switch on **Print automatically after payment** to print every receipt without tapping **Print**. Switch on **Open cash drawer on cash payment** if a drawer is connected to the printer.




### Print a test page

Tap **Print test page**. The printer prints a page titled **Test page** and the app says **Printer works**.




### Test the cash drawer

Tap **Open drawer**. The drawer opens and the app says **Drawer command sent**.




Every change is saved as soon as you make it and the app shows **Saved**. Receipts follow the layout set in the Portal under **Settings → Receipt**, including the logo, header and footer.

## If printing fails

- **Could not reach the printer. Check power, paper and connection.** Switch the printer off and on, check the paper and cable, then print the test page again.
- **Bluetooth permission is needed to use this printer.** Tap **Allow Bluetooth**.
- **Turn Bluetooth on to use this printer.** Switch on Bluetooth in Android.
- **USB access was not granted.** Unplug the cable, plug it in again and accept the request.
- **Choose a printer first.** No printer is selected yet.

## Barcode scanner

You can scan with the camera or with a USB or Bluetooth barcode scanner. In the POS, tap **Scan** to use the camera. A keyboard type scanner types the code into the search box, and its Enter key adds the product when **Scanner Enter key adds the product** is on in Settings. **Last scan** in Devices shows the last code received, and **Scan with camera** lets you test the camera.

Turn the camera button on or off in [Settings](https://docs.bakasir.com/en/docs/android/settings.md) under **Camera scanner**.

## Customer display

If a second screen is connected, switch on **Show cart on second screen** under **Customer display**. The app tells you **Second screen connected** or **No second screen detected**. The second screen shows **Welcome**, then the cart and total while you sell, and **Thank you** after payment.

## Tips

- **Paper width.** If receipts print with cut off text, choose the width that matches the paper roll.
- **Several copies.** Increase **Copies** when you need a customer and a store copy.
- **Other receipts.** You can reprint any receipt from **Sales**, see [Shift, register and sales](https://docs.bakasir.com/en/docs/android/shift-and-sales.md).

## Next steps

- [Sell with the Android POS](https://docs.bakasir.com/en/docs/android/selling.md)
- [Settings](https://docs.bakasir.com/en/docs/android/settings.md)
- [Portal receipt settings](https://docs.bakasir.com/en/docs/portal/settings.md)