The RS232 / TTL Arduino Thermal Receipt Printer is a compact, embedded mini thermal printer designed specifically for microcontroller projects, Arduino, ESP32, ESP8266, Raspberry Pi, and other embedded systems. This cute and lightweight thermal printer allows you to easily add real receipt-style printing functionality to your electronics projects, just like ATM receipts or supermarket billing machines.

Using a simple 3.3V–5V TTL serial interface, the printer can print text, barcodes, bitmap images, and QR codes directly from a microcontroller without complex drivers. The inkless thermal dot printing technology ensures low maintenance and high reliability. Designed for enclosure mounting, it fits standard 57mm thermal paper and is ideal for DIY projects, embedded systems, kiosks, data loggers, ticketing machines, and educational electronics projects in Bangladesh.

Features:

• Mini embedded thermal receipt printer for microcontroller projects

• Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, AVR, PIC

• Supports 3.3V–5V TTL serial communication

• Inkless thermal dot printing technology

• Prints text, barcodes, bitmap graphics, and QR codes

• Compact design suitable for panel and enclosure mounting

• Uses widely available 57mm thermal paper

• High reliability with low power standby operation

• Ideal for DIY electronics, IoT, automation, and learning projects

Specifications:

• Printing Method: Thermal dot printing

• Printing Speed: 50 – 80 mm/s

• Resolution: 8 points/mm, 384 points/line

• Effective Print Width: 48mm

• Character Set: ASCII, GB2312-80 (Chinese)

• Print Fonts:

  • ANK 8 x 16

  • ANK 9 x 17

  • ANK 9 x 24

  • ANK 12 x 24

• Paper Type: Thermal paper 57 x 30

• Paper Width: 57.5 ± 0.5mm

• Maximum Roll Diameter: 30mm

• Interface: RS232 / TTL Serial

• Embed Depth: 50mm

• Mounting Port Size: 103 x 57mm

• Power Supply: DC 5V – 9V

• Peak Current Requirement: 1.5A or higher during printing

• Operating Temperature: 5°C – 50°C

• Operating Humidity: 10% – 80%

• Storage Temperature: -20°C – 60°C

• Storage Humidity: 10% – 90%

Applications

• Arduino and microcontroller-based projects

• Embedded systems and IoT devices

• DIY receipt and ticket printing systems

• Educational electronics and STEM projects

• Data logging and sensor output printing

• Kiosk machines and automation systems

• POS prototypes and custom billing systems

• QR code and barcode printing modules

How to Use

• Connect the printer using TTL serial (TX/RX) to the microcontroller

• Provide a regulated DC power supply between 5V and 9V

• Ensure the power supply can deliver at least 1.5A during printing

• Load 57mm thermal paper correctly into the paper bay

• Send serial commands from the microcontroller to print data

• Use supported command sets to print text, images, or QR codes

Product Instructions

• Use only thermal paper for proper printing

• Do not power the printer without proper voltage regulation

• Avoid continuous printing without cooling intervals

• Mount securely using provided plastic shims for panel installation

• Keep away from moisture and excessive heat

• Use appropriate serial baud rate as per firmware documentation

Package Includes

• 1 x Embedded Thermal Printer Module (with print head)

• Power and data cables

• 2 x Plastic mounting shims

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