Connect The Thermal Printer to Microcontroller

This is how to actually only the head of thermal printer and the printer does not complete. Management of the whole printer would be much easier, just send a couple of AT commands and it starts to print the desired information. In this case, the author had to make a "font" in the firmware, to control two servo motors and warming elements on the print head.

Microcontroller that is used with the Atmel AVR Arduino bootloader-om. Warming elements are controlled with a ULN2801A Darlington transistors that are again controlled by SN74164 shift register to preserve a lot of IO pins. See the video printer in action.