DFRobot Embedded Thermal Printer TTL Serial

With the DFRobot Embedded Thermal Printer V2.0, you integrate a powerful thermal printer directly into your DIY or industrial project. The compact printer operates with thermal paper and requires no ink or toner, making it particularly low-maintenance and cost-efficient. Through a serial UART connection with TTL levels, the printer can be easily connected to a microcontroller like Arduino or a single-board computer like the Raspberry Pi. Thanks to ESC/POS compatibility, you can use familiar commands from the world of point-of-sale systems. With a print speed of 50 to 80 mm per second, the device quickly prints texts, barcodes, and simple graphics on 57 mm wide thermal paper. The integrated cutting edge allows for manual tearing off of printouts. The printer can be operated with a DC voltage of 9 to 24 V, which makes it particularly flexible for mobile or stationary use. Four mounting holes allow for stable installation in your housing or device. The robust design is suitable for long-term use, and the maximum roll diameter of 39 mm provides longer operating times without paper changes. Full ESC/POS support allows you to easily implement complex formatting and symbols. Ideal for projects with receipt, label, or data output.

Recommended accessories:

Features:

Thermal printing without ink or toner ensures maintenance-free and economical operation
Serial TTL interface enables easy control via Arduino, ESP32, or Raspberry Pi
ESC/POS compatibility allows you to use common printing commands from POS systems
Print speed of 50–80 mm/s ensures fast output of receipts, labels, or status reports
Paper width of 57 mm ±0.5 mm is compatible with standard thermal paper
Manual cutting edge facilitates the separation of printouts
Supply voltage of 9–24 V DC allows flexible use in mobile or stationary environments
Robust construction with four mounting holes for easy integration into housings or devices
Maximum paper roll diameter of 39 mm enables longer operation without frequent changes
Supports text, barcodes, and simple graphics for versatile applications

Application examples:

DIY POS systems with Arduino or Raspberry Pi
Mobile label printer for warehouse or logistics
Receipt printer for vending machines or self-service terminals
Data logger with direct printout function for measurement data
Simple ticket printing solutions for events or waiting lists

Documentation:

DFRobot Wiki

Technical specifications:

Manufacturer: DFRobot
Manufacturer SKU: DFR0503-EN
Model: GY-EP204X
Supply voltage: DC 9–24 V
Working current: 0.5–2.5 A
Standby current: 0.02 A
Interfaces: TTL, USB, RS485, RS232
Printing method: Line-based thermal printing
Printing mode: Receipt and label printing
Print color: Black and white output
Resolution: 203 DPI (8 dots/mm, 0.125 mm/dot, 384 dots per line)
Consumables: Thermal receipt paper roll, thermal label roll
Paper format: Paper width 58 mm ±0.5 mm, roll diameter 30 mm
Print content: Support for text, graphics, 1D barcodes, 2D codes, curves, and more
Effective print width: 48 mm
Print life: Up to 50 kilometers
Print speed: 70 mm/s
Character set: GB18030 character set (24×24 Chinese characters of first and second order), 12×24 ASCII character set, character magnification factor of 1–4 possible
Operating temperature: -5 °C to +50 °C
Operating humidity: 25% to 50% relative humidity
Storage temperature: -20 °C to +70 °C
Storage humidity: 5% to 95% relative humidity
Installation size (mounting hole): 77 × 53 × 42 mm
Dimensions (device): 82 × 58 × 44 mm
Weight: 262g