Konica Minolta MFP Touch screen use with Arduino Uno

How to reuse wrong Konica Minolta MFP display touch panel.

Jan 18, 2018

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touch panel

capacitive touch panel

i2c communication

spi color tft display

spi tft display

arduino uno

Devices & Components

Arduino Uno Rev3

Jumper wires (generic)

Breadboard (generic)

Resistor 10k ohm

1.44" Colorful SPI TFT LCD Display ST7735 128X128 Replace Nokia 5110/3310 LCD

Original New Touch Screen for Konica Minolta Bizhub C224 C284 C364 C554 C654 C754 control Panel

Software & Tools

Arduino IDE

Project description

Code

Source Code

arduino

1#include <Wire.h>               //Connect Konica Minolta touch screen  SDA to A04 and SCK to A05
2#include <Adafruit_GFX.h>       //Core graphics library
3#include  <Adafruit_ST7735.h>    //Hardware-specific library
4#include <SPI.h>
5 
6#define  TFT_SCLK 13
7#define TFT_MOSI 11
8#define TFT_CS 10
9#define TFT_RST 9
10#define  TFT_DC 8
11 
12Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI,  TFT_SCLK, TFT_RST);
13 
14byte register1;
15byte register2;
16byte register3;
17byte  register4;
18byte register5;
19byte register6;
20byte register7;
21byte register8;
22byte  register9;
23byte register10;
24byte register11;
25 
26int xx1, xx2, yy1, yy2,  r, x, y; //variables
27 
28void setup() {
29  tft.initR(INITR_REDTAB);    //initialize  a ST7735S chip, black tab
30  tft.fillScreen(ST7735_BLACK); //clear screen
31  Wire.begin(0x5c);           //join i2c bus (address optional for master)
32  //Serial.begin(115200);     //start serial for output
33  //Serial.println("starting"); //print "starting"  to serial
34}
35 
36void loop() {
37  Wire.beginTransmission(0x5C); //touch  panel address
38  Wire.write(0x00);       //start register
39  Wire.endTransmission();     //communication close
40  Wire.requestFrom(0x5c, 11);   //how many byte to  read from address 0x5C
41 
42  register1 = Wire.read();    //first byte reading  (Touch counter)
43  register2 = Wire.read();    //second reading (????)
44  register3  = Wire.read();    //etc etc etc (first finger X coordinate low byte)
45  register4  = Wire.read();    //first finger X coordinate high byte
46  register5 = Wire.read();    //first finger Y coordinate low byte
47  register6 = Wire.read();    //first  finger Y coordinate high byte
48  register7 = Wire.read();    //??
49  register8  = Wire.read();    //second finger X coordinate low byte
50  register9 = Wire.read();    //second finger X coordinate high byte
51  register10 = Wire.read();   //second  finger Y coordinate low byte
52  register11 = Wire.read();   //second finger Y  coordinate high byte
53 
54 
55  xx1 = (register4 * 256) + register3;    //calculate  2 byte to touch coordinate (0-1024)
56  yy1 = (register6 * 256) + register5;    //calculate  2 byte to touch coordinate (0-600)
57  xx2 = (register9 * 256) + register8;    //calculate  2 byte to touch coordinate (0-1024)
58  yy2 = (register11 * 256) + register10;  //calculate 2 byte to touch coordinate (0-600)
59 
60  xx1 = xx1 / 8;              //divide  by 8 to scale 128x128
61  xx1 = 128 - xx1;
62 
63  yy1 = yy1 / 4.6875;         //divide  by 4.6 to scale 128x128
64  yy1 = 128 - yy1;
65 
66  xx2 = xx2 / 8;
67  xx2  = 128 - xx2;
68 
69  yy2 = yy2 / 4, 6875;
70  yy2 = 128 - yy2;
71 
72  //x=  xx1 - xx2;             //calculate radius
73  //y= yy2 - yy2;
74 
75  //x= x*x;                   //pythagoras
76  //y= y*y;
77  //r = x +y;
78  //r= sqrt(r);
79  
80  //Serial.print("Touch counter:");
81  //Serial.println(register1);
82  //Serial.print("First finger horinzontal (X) coordinate:");
83  //Serial.println(xx1);
84  
85  //Serial.print("First finger vertical (Y) coordinate:");
86  //Serial.println(yy1);
87  
88  //Serial.print("Second finger horinzontal (X) coordinate:");
89  //Serial.println(xx2);
90  
91  //Serial.print("Second finger vertical (Y) coordinate:");
92  //Serial.println(yy2);
93  
94  tft.drawPixel(xx1, yy1, ST7735_WHITE);  //write dots to screen first finger
95  
96  tft.drawPixel(xx2, yy2, ST7735_GREEN);  //write dots to screen second finger
97  
98  //Draw line between two finger
99  //tft.drawLine(xx1,yy1,xx2,yy2, ST7735_WHITE);  // test
100 
101  //Draw dot for first finger and draw circle with radius between  first and second finger disatance
102  //if (register1 <= 1) {             //test
103  //  tft.drawPixel(xx1, yy1, ST7735_WHITE);    //test
104  //}                       //test
105  //else {tft.drawCircle (xx1,yy1,r,ST7735_BLUE); //test
106  //}                       //test
107  //delay(100);                   //test
108
109    }
110

#include <Wire.h>               //Connect Konica Minolta touch screen  SDA to A04 and SCK to A05
#include <Adafruit_GFX.h>       //Core graphics library
#include  <Adafruit_ST7735.h>    //Hardware-specific library
#include <SPI.h>
 
#define  TFT_SCLK 13
#define TFT_MOSI 11
#define TFT_CS 10
#define TFT_RST 9
#define  TFT_DC 8
 
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI,  TFT_SCLK, TFT_RST);
 
byte register1;
byte register2;
byte register3;
byte  register4;
byte register5;
byte register6;
byte register7;
byte register8;
byte  register9;
byte register10;
byte register11;
 
int xx1, xx2, yy1, yy2,  r, x, y; //variables
 
void setup() {
  tft.initR(INITR_REDTAB);    //initialize  a ST7735S chip, black tab
  tft.fillScreen(ST7735_BLACK); //clear screen
  Wire.begin(0x5c);           //join i2c bus (address optional for master)
  //Serial.begin(115200);     //start serial for output
  //Serial.println("starting"); //print "starting"  to serial
}
 
void loop() {
  Wire.beginTransmission(0x5C); //touch  panel address
  Wire.write(0x00);       //start register
  Wire.endTransmission();     //communication close
  Wire.requestFrom(0x5c, 11);   //how many byte to  read from address 0x5C
 
  register1 = Wire.read();    //first byte reading  (Touch counter)
  register2 = Wire.read();    //second reading (????)
  register3  = Wire.read();    //etc etc etc (first finger X coordinate low byte)
  register4  = Wire.read();    //first finger X coordinate high byte
  register5 = Wire.read();    //first finger Y coordinate low byte
  register6 = Wire.read();    //first  finger Y coordinate high byte
  register7 = Wire.read();    //??
  register8  = Wire.read();    //second finger X coordinate low byte
  register9 = Wire.read();    //second finger X coordinate high byte
  register10 = Wire.read();   //second  finger Y coordinate low byte
  register11 = Wire.read();   //second finger Y  coordinate high byte
 
 
  xx1 = (register4 * 256) + register3;    //calculate  2 byte to touch coordinate (0-1024)
  yy1 = (register6 * 256) + register5;    //calculate  2 byte to touch coordinate (0-600)
  xx2 = (register9 * 256) + register8;    //calculate  2 byte to touch coordinate (0-1024)
  yy2 = (register11 * 256) + register10;  //calculate 2 byte to touch coordinate (0-600)
 
  xx1 = xx1 / 8;              //divide  by 8 to scale 128x128
  xx1 = 128 - xx1;
 
  yy1 = yy1 / 4.6875;         //divide  by 4.6 to scale 128x128
  yy1 = 128 - yy1;
 
  xx2 = xx2 / 8;
  xx2  = 128 - xx2;
 
  yy2 = yy2 / 4, 6875;
  yy2 = 128 - yy2;
 
  //x=  xx1 - xx2;             //calculate radius
  //y= yy2 - yy2;
 
  //x= x*x;                   //pythagoras
  //y= y*y;
  //r = x +y;
  //r= sqrt(r);
  
  //Serial.print("Touch counter:");
  //Serial.println(register1);
  //Serial.print("First finger horinzontal (X) coordinate:");
  //Serial.println(xx1);
  
  //Serial.print("First finger vertical (Y) coordinate:");
  //Serial.println(yy1);
  
  //Serial.print("Second finger horinzontal (X) coordinate:");
  //Serial.println(xx2);
  
  //Serial.print("Second finger vertical (Y) coordinate:");
  //Serial.println(yy2);
  
  tft.drawPixel(xx1, yy1, ST7735_WHITE);  //write dots to screen first finger
  
  tft.drawPixel(xx2, yy2, ST7735_GREEN);  //write dots to screen second finger
  
  //Draw line between two finger
  //tft.drawLine(xx1,yy1,xx2,yy2, ST7735_WHITE);  // test
 
  //Draw dot for first finger and draw circle with radius between  first and second finger disatance
  //if (register1 <= 1) {             //test
  //  tft.drawPixel(xx1, yy1, ST7735_WHITE);    //test
  //}                       //test
  //else {tft.drawCircle (xx1,yy1,r,ST7735_BLUE); //test
  //}                       //test
  //delay(100);                   //test

    }

Source Code

arduino

1#include <Wire.h>               //Connect Konica Minolta touch screen   SDA to A04 and SCK to A05
2#include <Adafruit_GFX.h>       //Core graphics library
3#include   <Adafruit_ST7735.h>    //Hardware-specific library
4#include <SPI.h>
5 
6#define   TFT_SCLK 13
7#define TFT_MOSI 11
8#define TFT_CS 10
9#define TFT_RST 9
10#define   TFT_DC 8
11 
12Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI,   TFT_SCLK, TFT_RST);
13 
14byte register1;
15byte register2;
16byte register3;
17byte   register4;
18byte register5;
19byte register6;
20byte register7;
21byte register8;
22byte   register9;
23byte register10;
24byte register11;
25 
26int xx1, xx2, yy1, yy2,   r, x, y; //variables
27 
28void setup() {
29  tft.initR(INITR_REDTAB);    //initialize   a ST7735S chip, black tab
30  tft.fillScreen(ST7735_BLACK); //clear screen
31   Wire.begin(0x5c);           //join i2c bus (address optional for master)
32  //Serial.begin(115200);      //start serial for output
33  //Serial.println("starting"); //print "starting"   to serial
34}
35 
36void loop() {
37  Wire.beginTransmission(0x5C); //touch   panel address
38  Wire.write(0x00);       //start register
39  Wire.endTransmission();      //communication close
40  Wire.requestFrom(0x5c, 11);   //how many byte to   read from address 0x5C
41 
42  register1 = Wire.read();    //first byte reading   (Touch counter)
43  register2 = Wire.read();    //second reading (????)
44  register3   = Wire.read();    //etc etc etc (first finger X coordinate low byte)
45  register4   = Wire.read();    //first finger X coordinate high byte
46  register5 = Wire.read();     //first finger Y coordinate low byte
47  register6 = Wire.read();    //first   finger Y coordinate high byte
48  register7 = Wire.read();    //??
49  register8   = Wire.read();    //second finger X coordinate low byte
50  register9 = Wire.read();     //second finger X coordinate high byte
51  register10 = Wire.read();   //second   finger Y coordinate low byte
52  register11 = Wire.read();   //second finger Y   coordinate high byte
53 
54 
55  xx1 = (register4 * 256) + register3;    //calculate   2 byte to touch coordinate (0-1024)
56  yy1 = (register6 * 256) + register5;    //calculate   2 byte to touch coordinate (0-600)
57  xx2 = (register9 * 256) + register8;    //calculate   2 byte to touch coordinate (0-1024)
58  yy2 = (register11 * 256) + register10;   //calculate 2 byte to touch coordinate (0-600)
59 
60  xx1 = xx1 / 8;              //divide   by 8 to scale 128x128
61  xx1 = 128 - xx1;
62 
63  yy1 = yy1 / 4.6875;         //divide   by 4.6 to scale 128x128
64  yy1 = 128 - yy1;
65 
66  xx2 = xx2 / 8;
67  xx2   = 128 - xx2;
68 
69  yy2 = yy2 / 4, 6875;
70  yy2 = 128 - yy2;
71 
72  //x=   xx1 - xx2;             //calculate radius
73  //y= yy2 - yy2;
74 
75  //x= x*x;                    //pythagoras
76  //y= y*y;
77  //r = x +y;
78  //r= sqrt(r);
79   
80  //Serial.print("Touch counter:");
81  //Serial.println(register1);
82   //Serial.print("First finger horinzontal (X) coordinate:");
83  //Serial.println(xx1);
84   
85  //Serial.print("First finger vertical (Y) coordinate:");
86  //Serial.println(yy1);
87   
88  //Serial.print("Second finger horinzontal (X) coordinate:");
89  //Serial.println(xx2);
90   
91  //Serial.print("Second finger vertical (Y) coordinate:");
92  //Serial.println(yy2);
93   
94  tft.drawPixel(xx1, yy1, ST7735_WHITE);  //write dots to screen first finger
95   
96  tft.drawPixel(xx2, yy2, ST7735_GREEN);  //write dots to screen second finger
97   
98  //Draw line between two finger
99  //tft.drawLine(xx1,yy1,xx2,yy2, ST7735_WHITE);   // test
100 
101  //Draw dot for first finger and draw circle with radius between   first and second finger disatance
102  //if (register1 <= 1) {             //test
103   //  tft.drawPixel(xx1, yy1, ST7735_WHITE);    //test
104  //}                       //test
105   //else {tft.drawCircle (xx1,yy1,r,ST7735_BLUE); //test
106  //}                       //test
107   //delay(100);                   //test
108
109    }
110

#include <Wire.h>               //Connect Konica Minolta touch screen   SDA to A04 and SCK to A05
#include <Adafruit_GFX.h>       //Core graphics library
#include   <Adafruit_ST7735.h>    //Hardware-specific library
#include <SPI.h>
 
#define   TFT_SCLK 13
#define TFT_MOSI 11
#define TFT_CS 10
#define TFT_RST 9
#define   TFT_DC 8
 
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI,   TFT_SCLK, TFT_RST);
 
byte register1;
byte register2;
byte register3;
byte   register4;
byte register5;
byte register6;
byte register7;
byte register8;
byte   register9;
byte register10;
byte register11;
 
int xx1, xx2, yy1, yy2,   r, x, y; //variables
 
void setup() {
  tft.initR(INITR_REDTAB);    //initialize   a ST7735S chip, black tab
  tft.fillScreen(ST7735_BLACK); //clear screen
   Wire.begin(0x5c);           //join i2c bus (address optional for master)
  //Serial.begin(115200);      //start serial for output
  //Serial.println("starting"); //print "starting"   to serial
}
 
void loop() {
  Wire.beginTransmission(0x5C); //touch   panel address
  Wire.write(0x00);       //start register
  Wire.endTransmission();      //communication close
  Wire.requestFrom(0x5c, 11);   //how many byte to   read from address 0x5C
 
  register1 = Wire.read();    //first byte reading   (Touch counter)
  register2 = Wire.read();    //second reading (????)
  register3   = Wire.read();    //etc etc etc (first finger X coordinate low byte)
  register4   = Wire.read();    //first finger X coordinate high byte
  register5 = Wire.read();     //first finger Y coordinate low byte
  register6 = Wire.read();    //first   finger Y coordinate high byte
  register7 = Wire.read();    //??
  register8   = Wire.read();    //second finger X coordinate low byte
  register9 = Wire.read();     //second finger X coordinate high byte
  register10 = Wire.read();   //second   finger Y coordinate low byte
  register11 = Wire.read();   //second finger Y   coordinate high byte
 
 
  xx1 = (register4 * 256) + register3;    //calculate   2 byte to touch coordinate (0-1024)
  yy1 = (register6 * 256) + register5;    //calculate   2 byte to touch coordinate (0-600)
  xx2 = (register9 * 256) + register8;    //calculate   2 byte to touch coordinate (0-1024)
  yy2 = (register11 * 256) + register10;   //calculate 2 byte to touch coordinate (0-600)
 
  xx1 = xx1 / 8;              //divide   by 8 to scale 128x128
  xx1 = 128 - xx1;
 
  yy1 = yy1 / 4.6875;         //divide   by 4.6 to scale 128x128
  yy1 = 128 - yy1;
 
  xx2 = xx2 / 8;
  xx2   = 128 - xx2;
 
  yy2 = yy2 / 4, 6875;
  yy2 = 128 - yy2;
 
  //x=   xx1 - xx2;             //calculate radius
  //y= yy2 - yy2;
 
  //x= x*x;                    //pythagoras
  //y= y*y;
  //r = x +y;
  //r= sqrt(r);
   
  //Serial.print("Touch counter:");
  //Serial.println(register1);
   //Serial.print("First finger horinzontal (X) coordinate:");
  //Serial.println(xx1);
   
  //Serial.print("First finger vertical (Y) coordinate:");
  //Serial.println(yy1);
   
  //Serial.print("Second finger horinzontal (X) coordinate:");
  //Serial.println(xx2);
   
  //Serial.print("Second finger vertical (Y) coordinate:");
  //Serial.println(yy2);
   
  tft.drawPixel(xx1, yy1, ST7735_WHITE);  //write dots to screen first finger
   
  tft.drawPixel(xx2, yy2, ST7735_GREEN);  //write dots to screen second finger
   
  //Draw line between two finger
  //tft.drawLine(xx1,yy1,xx2,yy2, ST7735_WHITE);   // test
 
  //Draw dot for first finger and draw circle with radius between   first and second finger disatance
  //if (register1 <= 1) {             //test
   //  tft.drawPixel(xx1, yy1, ST7735_WHITE);    //test
  //}                       //test
   //else {tft.drawCircle (xx1,yy1,r,ST7735_BLUE); //test
  //}                       //test
   //delay(100);                   //test

    }

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