Hi community,
I want to print from a QR203 printer with EM205 board. The normal printing works quite well, but printing upside down produces not the correct result. It looks more like the text is mirrored instead of turned, please see picture.
I am using the simple code below to check the behaviour, and have tried it with the Adafruit_Thermal library as well, with the same result. Here's my code, any idea what to change? FYI, the printer has TTL, RS232, and USB input pins. I am using TTL.
Thanks a lot!
#include <SoftwareSerial.h>
SoftwareSerial Thermal(99, 16);
int heatTime = 150;
int heatInterval = 255;
char printDensity = 15;
char printBreakTime = 15;
void setup(){
Serial.begin(115200); // for debug info to serial monitor
Thermal.begin(9600); // to write to our new printer
Serial.println("Printer started");
delay(2000);
initPrinter();
Thermal.println();
Thermal.println("This is normal text");
Thermal.write(27);
Thermal.write(123);
Thermal.write(1);
Thermal.println("This is text upside down");
Thermal.println();
Thermal.println();
Thermal.println();
}
void initPrinter(){
//Modify the print speed and heat
Thermal.write(27);
Thermal.write(55);
Thermal.write(7); //Default 64 dots = 8*('7'+1)
Thermal.write(heatTime); //Default 80 or 800us
Thermal.write(heatInterval); //Default 2 or 20us
//Modify the print density and timeout
Thermal.write(18);
Thermal.write(35);
int printSetting = (printDensity<<4) | printBreakTime;
Thermal.write(printSetting); //Combination of printDensity and printBreakTime
Serial.println();
Serial.println("Printer ready");
}
void loop(){
}
