11x11 matrix board

[Cory Baumgart]

Hi,

i have an arachnid board that has 11x11 connectors. I am under the impression that i cannot use the arduino uno because there are not enough inputs/outputs. So I must use the arduino Mega2560 for more inputs. Is the original Uno sketch going to work "out of the box" persay? I know ill have to change the file as far as how it's using the matrix, but is the file itself compatible?

Thanks!
Cory

[diego]

hi cory,
11x11 seems strange could you send us a picture?

[Anonymous]

Attched I have the pictures. Each cable has 11 leads on them!

[poilou]

Hi Cory,

My opinion is that there are multiple reasons for that :

• either all leads are not used
• or there are buttons or extra parts concerned by those leads
• or there are leads that corresponds to the same part or the board (unlikely but we never know)

Anyway, I am pretty sure that there are only minor changes to do to the sketch files. Probaly only the matrix to adjust.

[Cory Baumgart]

OK! That's kind of what I thought. Maybe if I get bored I'll trace some leads and see whats going on with it. Thanks for the input!

[poilou]

What's up with your board Cory ?

[Cory Baumgart]

i opened a different board today and hooked that up. unfortunately its an 8x11 matrix so i need my arduino mega to come in. i hooked it up with one wire not connected and it worked with a bunch of segments not working due to that wire not being connected.

[Andreas]

8x11 is possible:
add to your setup: UCSR0B = 0; //use of D0 and D1
void setup()

{
  UCSR0B = 0;
  Serial.begin(9600);

then:

const byte numRows = 8; //four rows
const byte numCols = 11; //four columns
const int debounceTime = 100;//20 works better than great !
//define the cymbols on the buttons of the keypads
char keymap[numRows][numCols] = {
  {'0','1','2','4','5','6','7','8','9','*'},
  {'a','b','c','d','e','f','g','h','i','?'},
  {'j','k','l','m','n','o','p','q','r','&'},
  {'s','t','u','v','w','x','y','z','A','@'},
  {'B','C','D','E','F','G','H','I','J','}'},
  {'K','L','M','N','O','P','Q','R','S',')'},
  {'T','U','V','W','X','Y','Z','+','-',']'},
  {'/','!','$','#','(','=','[','_','<','>'},
   {'ä','ö','ü','Ä','Ö','Ü','%','`','´','~'}
};
byte rowPins[numRows] = {A0, A1, A2, A3, A4, A5, 2, 3}; //connect to the row pinouts of the keypad
byte colPins[numCols] = {13, 12, 11, 10, 9, 8 ,7, 6, 5, 4, 1 }; //connect to the column pinouts of the keypad

i cannot promise this, but should work

[John Morris]

Hi. Just adding this for others who might encounter the same as Cory. Using an Arachid Cricket Pro 650 doner board, I found what looked like 10 x 8 matrix. As Andreas lists above, this is possible with the Uno. One other problem was that the outer single panels and the inner single panels were returning different values. I mapped these all out and then edited the keymap above to return the same value when either the inner or outer Single panel was hit for a number. For example, let's say the outer Single panel for 10 was returning a "=", but the inner Single panel for 10 was returning a ")". I just switched the code in the sketch so that inner single panel also returned a "=". Works flawlessly.

[Anonymous]

Do you have a copy of the key mapping by chance?

[John Morris]

const byte numRows = 8; //eight rows
const byte numCols = 11; //eleven columns
const int debounceTime = 100;//20 works better than great !
//define the cymbols on the buttons of the keypads
char keymap[numRows][numCols] = {
  {'0','1','2','4','5','6','7','8','9','*','/'}, //1
  {'a','b','c','d','e','f','g','h','i','?','!'}, //2
  {'j','k','l','m','n','o','p','q','r','&','$'}, //3
  {'s','b','c','d','e','f','g','h','i','?','!'}, //4
  {'B','C','D','E','F','G','H','I','J','}','('}, //5
  {'K','L','M','N','O','P','Q','R','S',')','='}, //6
  {'T','U','V','W','X','Y','Z','+','-',']','['}, //7
  {'_','L','M','N','O','P','Q','R','S',')','='} //8
};
byte rowPins[numRows] = {A0, A1, A2, A3, A4, A5, A6, A7}; //connect to the row pinouts of the keypad
byte colPins[numCols] = {13, 12, 11, 10, 9, 8 ,7, 6, 5, 4, 3}; //connect to the column pinouts of the keypad

[Anonymous]

thanks!