Example Code for Arduino-Label Mode Printing

Hardware Preparation

• DFRduino UNO R3 with IO Expansion Shield and USB Cable A-B
• [Embedded Thermal Printer V2.0](Embedded Thermal Printer V2.0)
• 9-24V adapter or power supply x1

Software Preparation

• Arduino IDE

Wiring Diagram

TTL interface wiring method

Sample Code

#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11);                                // RX, TX
uint8_t Com[7] = { 0x1F, 0x2F, 0x0B, 0x00, 0x01, 0x01, 0x01 };  //Switch to tab mode
uint8_t Com1[2] = { 0x1F, 0x63 };//Label verification
const char QRx[200] = {
0x1B,0x40,

0x1A,0x5B,0x01,0x00,0x00,0x00,0x00,0x90,0x01,0x40,0x01,0x02,

0x1A,0x31,0x00,0x05,0x02,0x1E,0x00,0x1E,0x00,0x04,0x00,0x77,0x77,0x77,0x2E,0x64,0x66,0x72,0x6F,0x62,0x6F,0x74,0x2E,0x63,0x6F,0x6D,0x00,

0x1A,0x54,0x01,0xC8,0x00,0x14,0x00,0x18,0x00,0x00,0x11,0x44,0x46,0x52,0x4F,0x42,0x4F,0x54,0x00,

0x1A,0x54,0x01,0xC8,0x00,0x37,0x00,0x18,0x00,0x00,0x11,0x53,0x4B,0x55,0x3A,0x44,0x46,0x52,0x30,0x35,0x30,0x33,0x2D,0x43,0x4E,0x00,

0x1A,0x54,0x01,0xC8,0x00,0x5A,0x00,0x18,0x00,0x00,0x11,0x77,0x77,0x77,0x2E,0x64,0x66,0x72,0x6F,0x62,0x6F,0x74,0x2E,0x63,0x6F,0x6D,0x00,

0x1A,0x5D,0x00,

0x1A,0x4F,0x00
};

void setup() {
  mySerial.begin(115200);
  Serial.begin(9600);
  mySerial.write(Com, 7);  //Switch to tab mode
  delay(1000);
  mySerial.write(Com1, 2);
  while (Serial.read() >= 0) {}
}
void loop() {
  mySerial.println();
  mySerial.write(QRx, 200);  //Send a print command to the printer
  mySerial.println();
  delay(10000);
}

Result

The printer will print the following content every 10 seconds: