I’m struggling to figure out the problem that a thermal printer COM-10438 prints strange characters like a attached photo.
When I tried test-printing, it correctly prints CP437 table with a normal characters and says its baud rate is 19200.
The prints of photo is printed just when I upload the example file from adafuit’s library,
GitHub - adafruit/Adafruit-Thermal-Printer-Library: Arduino Library for Small Thermal Printers .
with following instruction here.
I guess it prints Serial.write inside setup() but with difference character set.
I’m using 9V2A power.
The thermal printer is COM-10438 and a model is CSN-A2-R written at the back.
Could anyone guess what the problem and how it can be fixed?
Thanks in advance.