It can be used in many situations not only for restaurant and hospital management. The system is designed to print data wirelessly using Bluetooth HC-05 for restaurant and hospital management applications. The baud rate needs to be set at 9600 for the microcontroller to communicate with the printer. ![]() A simple code similar to the one used for the serial monitor works for the printer. Download the latest drivers, firmware, and software for your HP ENVY 4500 e-All-in-One Printer series.This is HP’s official website that will help automatically detect and download the correct drivers free of cost for your HP Computing and Printing products for Windows and Mac operating system. ![]() The mini thermal printer prints whatever is sent by the microcontroller. Interfacing between UART of microcontroller, MAX232, serial port, and the USB port of printer are well established with the complete schematic diagram. Digital pins '3' and '4' on the microcontroller are used as virtual Rx and Tx serial lines while leaving the main serial port open for debugging purposes. Data sent by the microcontroller is made to print from the printer and it is shown in the result section. The microcontroller is programmed to transfer the data from microcontroller to printer using a serial communication protocol such as universal asynchronous receiver and transmitter (UART) via Serial communication devices such as MAX232 converter, DB9 connector which is nothing but RS232 serial port, and universal serial bus (USB) communication port. In this paper, the communication between Arduino Mega microcontroller and mini thermal printer is implemented by hardware and software integration.
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