If the printer spits out random symbols, the baud rate (for Serial) or the emulation mode (ESC/POS) is likely incorrect.
If you have installed the but the printer is acting up, diagnose by symptom.
If the printer spits out random symbols, the baud rate (for Serial) or the emulation mode (ESC/POS) is likely incorrect.
If you have installed the but the printer is acting up, diagnose by symptom.
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