Print receipts, barcodes, QR codes, and bitmap graphics directly from your microcontroller! This package includes a thermal printer with a print head (no ink needed), a set of power and data cables, and two plastic shims for panel mounting. Thermal paper is not included. The printer uses 2.25' wide thermal paper, which is commonly available at office or stationery stores and can hold up to 50 ft of paper at once. You'll need a 5 - 9VDC regulated power supply that can provide 1.5A or more during high - current printing. The back panel has two 3 - pin connectors for power and serial communications, and the printer has a default 19200bps baud rate. If using with an Arduino, connect it to the “Vin” pin and attach an external power supply as it draws more current than USB can deliver. Documents include Product Sheet, User Manual, Example Code, and more.

Using the mini thermal printer is easy. First, make sure you have a 5 - 9VDC regulated power supply that can give 1.5A or more. Connect the power cable to the power connector on the back panel and the data cable for serial communication. Then, get some 2.25' wide thermal paper from an office or stationery store and load it into the printer. You can start printing receipts, barcodes, QR codes, and bitmap graphics right from your microcontroller. If you're using it with an Arduino, remember to connect it to the “Vin” pin and use an external power supply. When it comes to maintenance, keep the printer clean and free from dust. Avoid touching the print head with your fingers. And always follow the instructions in the user manual for best results.