Board keeps getting disconnected

Projects General Guidance
1

I'm trying to build a keyboard, but board is getting disconnected and reconnected after OutCol 11 get's high. What could be causing this?

#include <usb_keyboard.h>

int LongPressDelay = 350;
int SpamSpeed = 15;

byte InRow[] = { 0, 1, 2, 3, 4, 5 };
const int InCount = 6;
byte OutCol[] = { 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 34 };
const int OutCount = 17;
/*
const char* layout[6][17] = {
  {"KEY_F1"  ,"KEY_F1"  ,"KEY_ESC"        ,"KEY_F1"       ,"KEY_F2"       ,"KEY_F3"  ,"KEY_F4"   ,"KEY_F5"    ,"KEY_F6"  ,"KEY_F7"   ,"KEY_F8"   ,"KEY_F9"        ,"KEY_F10"      ,"KEY_F11"        ,"KEY_F12"          ,"KEY_INSERT"     ,"KEY_HOME"     },
  {"KEY_F1"  ,"KEY_F2"  ,"KEY_TILDE"      ,"KEY_1"        ,"KEY_2"        ,"KEY_3"   ,"KEY_4"    ,"KEY_5"     ,"KEY_6"   ,"KEY_7"    ,"KEY_8"    ,"KEY_9"         ,"KEY_0"        ,"KEY_MINUS"      ,"KEY_EQUAL"        ,"KEY_BACKSPACE"  ,"KEY_END"      },
  {"KEY_F1"  ,"KEY_F2"  ,"KEY_TAB"        ,"KEY_Q"        ,"KEY_W"        ,"KEY_E"   ,"KEY_R"    ,"KEY_T"     ,"KEY_Y"   ,"KEY_U"    ,"KEY_I"    ,"KEY_O"         ,"KEY_P"        ,"KEY_LEFT_BRACE" ,"KEY_RIGHT_BRACE"  ,"KEY_BACKSLASH"  ,"KEY_DELETE"   },
  {"KEY_F1"  ,"KEY_F2"  ,"KEY_CAPS_LOCK"  ,"KEY_A"        ,"KEY_S"        ,"KEY_D"   ,"KEY_F"    ,"KEY_G"     ,"KEY_H"   ,"KEY_J"    ,"KEY_K"    ,"KEY_L"         ,"KEY_SEMICOLON","0"              ,"KEY_QUOTE"        ,"KEY_ENTER"      ,"KEY_PAGE_UP"  },
  {"KEY_F1"  ,"KEY_F2"  ,"KEY_LEFT_SHIFT" ,"KEY_Z"        ,"KEY_X"        ,"KEY_C"   ,"KEY_V"    ,"KEY_B"     ,"KEY_N"   ,"KEY_M"    ,"KEY_COMMA","KEY_PERIOD"    ,"KEY_SLASH"    ,"0"              ,"KEY_RIGHT_SHIFT"  ,"KEY_UP"         ,"KEY_PAGE_DOWN"},
  {"KEY_F1"  ,"KEY_F2"  ,"KEY_LEFT_CTRL"  ,"KEY_LEFT_GUI" ,"KEY_LEFT_ALT" ,"0"       ,"0"        ,"KEY_SPACE" ,"0"       ,"0"        ,"0"        ,"KEY_RIGHT_ALT" ,"KEY_RIGHT_GUI","0"              ,"KEY_LEFT"         ,"KEY_DOWN"       ,"KEY_RIGHT"    }
};  

const int layout[6][17] = {
  {KEY_F1  ,KEY_F1  ,KEY_ESC        ,KEY_F1       ,KEY_F2       ,KEY_F3  ,KEY_F4   ,KEY_F5    ,KEY_F6  ,KEY_F7   ,KEY_F8   ,KEY_F9        ,KEY_F10      ,KEY_F11        ,KEY_F12          ,KEY_INSERT     ,KEY_HOME     },
  {KEY_F1  ,KEY_F2  ,KEY_TILDE      ,KEY_1        ,KEY_2        ,KEY_3   ,KEY_4    ,KEY_5     ,KEY_6   ,KEY_7    ,KEY_8    ,KEY_9         ,KEY_0        ,KEY_MINUS      ,KEY_EQUAL        ,KEY_BACKSPACE  ,KEY_END      },
  {KEY_F1  ,KEY_F2  ,KEY_TAB        ,KEY_Q        ,KEY_W        ,KEY_E   ,KEY_R    ,KEY_T     ,KEY_Y   ,KEY_U    ,KEY_I    ,KEY_O         ,KEY_P        ,KEY_LEFT_BRACE ,KEY_RIGHT_BRACE  ,KEY_BACKSLASH  ,KEY_DELETE   },
  {KEY_F1  ,KEY_F2  ,KEY_CAPS_LOCK  ,KEY_A        ,KEY_S        ,KEY_D   ,KEY_F    ,KEY_G     ,KEY_H   ,KEY_J    ,KEY_K    ,KEY_L         ,KEY_SEMICOLON,0              ,KEY_QUOTE        ,KEY_ENTER      ,KEY_PAGE_UP  },
  {KEY_F1  ,KEY_F2  ,KEY_LEFT_SHIFT ,KEY_Z        ,KEY_X        ,KEY_C   ,KEY_V    ,KEY_B     ,KEY_N   ,KEY_M    ,KEY_COMMA,KEY_PERIOD    ,KEY_SLASH    ,0              ,KEY_RIGHT_SHIFT  ,KEY_UP         ,KEY_PAGE_DOWN},
  {KEY_F1  ,KEY_F2  ,KEY_LEFT_CTRL  ,KEY_LEFT_GUI ,KEY_LEFT_ALT ,0       ,0        ,KEY_SPACE ,0       ,0        ,0        ,KEY_RIGHT_ALT ,KEY_RIGHT_GUI,0              ,KEY_LEFT         ,KEY_DOWN       ,KEY_RIGHT    }
};  
*/
const uint8_t layout[6][17] = {
  {104 ,41  ,41  ,58  ,59  ,60  ,61  ,62  ,63  ,64  ,65  ,66  ,67  ,68  ,69  ,73  ,74 },
  {105 ,21  ,53  ,30  ,31  ,32  ,33  ,34  ,35  ,36  ,37  ,38  ,39  ,45  ,46  ,42  ,77 },
  {106 ,21  ,43  ,20  ,26  ,8   ,21  ,23  ,28  ,24  ,12  ,18  ,19  ,47  ,48  ,49  ,76 },
  {107 ,21  ,57  ,4   ,22  ,7   ,9   ,10  ,11  ,13  ,14  ,15  ,51  ,52  ,0   ,40  ,75 },
  {108 ,21  ,0x02,29  ,27  ,6   ,25  ,5   ,17  ,16  ,54  ,55  ,56  ,0   ,0x20,82  ,78 },
  {109 ,21  ,0x01,0x08,0x04,0   ,0   ,44  ,0   ,0   ,0   ,0x40,0x80,0   ,80  ,81  ,79 }
};

int KeyDown[6][17];
bool KeyLong[6][17];

void setup() {

  for(int i = 0; i < OutCount; i++){
    pinMode(OutCol[i],OUTPUT);
    digitalWrite(OutCol[i],LOW);
  }

  for(int i = 0; i < InCount; i++){
    pinMode(InRow[i],INPUT_PULLUP);
  }

  Keyboard.begin();

}

void loop() {

  for(int i = 0; i < OutCount; i++){
    digitalWrite(OutCol[i],HIGH);
    delayMicroseconds(1000);
   Seirial.print(i);

    for(int j = 0; j < InCount; j++){
      if(digitalRead(InRow[j]) == LOW)
      {
        KeyPressed(i,j);
      }
      else if(KeyDown[i][j] != 0){
        resetKey(i,j);
      }
    }

    digitalWrite(OutCol[i],LOW);
    pinMode(OutCol[i],INPUT);
    delayMicroseconds(500);
  }
}

void KeyPressed(int row, int col){

  Serial.print("Output: ");
  Serial.print(row);
  Serial.print("Input: ");
  Serial.print(col);
  Serial.print(" ");
  Serial.println(layout[row][col]);

  if(KeyDown[row][col] == 0){
      Keyboard.write(layout[row][col]);
  }
  else if(KeyLong[row][col] && KeyDown[row][col] > SpamSpeed){
      usb_keyboard_press(layout[row][col],0);
      KeyDown[row][col] = 1;    
  }
  else if(KeyDown[row][col] > LongPressDelay){
    KeyLong[row][col] = true;
  }

  KeyDown[row][col]++;
}

void resetKey(int row, int col){
  KeyDown[row][col] = 0;
  KeyLong[row][col] = false;
}
2

Disconnected from what? Plugs flying out?

3

What's it connected to?

Please post a schematic and the code.

a7

4

What "board" do you write about? It cannot be the standard UNO because you have pins numbered higher than 20.

Above code won't compile.

5

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