Reference
Precautions
The higher the voltage of the embedded thermal printer, the faster the printing speed, and the clearer the printed documents (the voltage range is 9-24V). At the same time, the normal working current of the product fluctuates between 0.5-2.5A. The instantaneous current can reach up to 2.5A. If the weather is cold, the current ampere requirement will also increase accordingly. The power consumption of printing graphics is generally large. If graphics are involved in printing receipts, it is recommended to choose a suitable power supply!
If you want to use Arduino to print Chinese characters, you need to create a C file, which cannot be compiled under Arduino IDE (the IDE development environment cannot input Chinese, use the clipboard to paste, and Chinese is also UTF8, which is garbled when printed). Write the relevant array data in the C file for calling.
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