Thermal Printer - Serial Interface

This is a thermal printer like you would find on a cash register or adding machine. It will print simple strings passed to it via TTL serial, bitmap images (poorly) and it even generates several different formats of barcodes.

The thermal printer takes 57mm wide thermal paper with a max roll diameter of 39mm. The back panel has 2 3-pin connectors; one for power and one for serial communications. The thermal printer ships with default 19200bps baud rate. If you're using this printer in conjunction with an Arduino, you're going to need to connect it to the "Vin" pin and attach an external power supply, as the printer will draw more current than USB is capable of delivering. We've found that these printers can draw about 1.5A because they need to generate heat.


The print head has a rated life of 50km. Use this printer in any project where you need a hard-copy of the output, or in an art project where you want to keep the output to stick on your fridge, or to build a DIY cash register.

Product Video

Quick Spec

  • Power Supply: 5-9V DC
  • Max Current: 1.5A
  • Printing Method: Thermal Dot Line
  • Printing Speed: 50-80mm/s
  • Resolution: 8 dots/mm, 384 dots/line
  • Paper Width: 47mm
  • Max roll diameter: 39mm
  • Default Baud: 19200bps
  • Printing Method Thermal Dot Line
  • Outer Dimensions: 111x65x57mm
  • Inteface: Serial RS-232 TTL


Shipping List

  • 1 x Thermal Printer for Arduino

Thermal Printer - Serial Interface

  • Brand: Sparkfun
  • Product Code: EM5820
  • Weight: 0.207kg
  • Product Status : Active
  • Stock

    Warehouse Stock Status Location
    Centurion In Stock UC145-UC151
    Stellenbosch In Stock J6003
    Bulk Location No Stock

    We ship free of charge between branches to complete your order.

  • R498.00 (Inc Tax: R572.70)

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Tags: thermal, printer, arduino, slip, serial, com-10438