This compact thermal receipt printer connects via USB or TTL serial, making it easy to add printing capability to microcontroller projects, Raspberry Pi builds, and embedded systems. It prints text, barcodes in 11 standard formats, QR codes, and custom monochrome bitmap graphics on standard 57 mm (2.25") thermal paper.

The printer supports a wide range of text formatting options including bold, underline, inverted text, variable line spacing, and left/centre/right justification. An Arduino library and Python example code are available for quick integration.

Key Features

• Dual Interface – USB and TTL serial connectivity
• Text Formatting – Small, medium, and large text; bold; underline; inverted; variable line spacing; left/centre/right justification
• Barcode Support – UPC A, UPC E, EAN13, EAN8, CODE39, I25, CODABAR, CODE93, CODE128, CODE11, MSI — with adjustable height
• QR Code & Bitmap Printing – Custom monochrome graphics
• Standard Paper – Uses 57 mm (2.25") thermal paper rolls, up to 10 m (33 ft) with ≤30 mm diameter

Specifications

• Interface – USB and TTL serial
• Paper Width – 57 mm (2.25")
• Max Roll Diameter – 30 mm
• Power Supply – 5–9 V, 1.5 A minimum (not included; cannot be powered via USB alone)

Ideal For

• Embedded receipt and label printing
• IoT data logging with physical output
• Interactive art installations and creative projects
• Point-of-sale and kiosk prototypes

Resources

• Arduino Tutorial & Library
• Python Example Code (GitHub)

Package Contents

• 1× Mini Thermal Receipt Printer
• 1× USB cable
• 1× JST cable
• 1× 4-pin TTL cable
• 1× Thermal paper roll (57 mm × ~10 m)