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### Topic: [ask] using two led dot matix 8x8 be 16x8 using shift register (Read 2238 times)previous topic - next topic

#### jonnygreenwood

##### Sep 18, 2013, 04:57 pmLast Edit: Sep 18, 2013, 05:03 pm by jonnygreenwood Reason: 1
hi... im jonny from indonesian

now im have trouble with my training using led dot matrix 8x8  =(  =( . and thats problem is how to join two led dot matrix 8x8 be 16[column] x 8[row] using shift register... and here im using four shift register. and i try do three days but still dont success ... anyone help ? about schema or anything,

see the below a my training  XD

position shift register

number 1 = shift ROWS
number 2 = shift COLUMN
number 3 = shift ROWS
number 4 = SHIFT COLUM

i do try a connect  number 3 to number 1 and number 4 to number 2 .. and failed .. and if i connect number 4 to number 3 and number 4 to number 1 . be two animation in two led dot matrix.. and hope result is LIKE RUNNING TEXT BUT THE TEXT CAN RUN THROUGH TWO LED DO MATRIX  =(  =(

regard and go open source

#### PaulRB

#1
##### Sep 19, 2013, 07:05 am
Hi jonny,

I'm sorry but it is very difficult to understand what you are trying to do and what help you need. Your picture looks like a plate of noodles! Please post a schematic and your sketch. Use code tags around your sketch.

Paul

#### jonnygreenwood

#2
##### Sep 19, 2013, 12:59 pm

Hi jonny,

I'm sorry but it is very difficult to understand what you are trying to do and what help you need. Your picture looks like a plate of noodles! Please post a schematic and your sketch. Use code tags around your sketch.

Paul

hi Paul

to the point whats i mean is " how to join 2 pieces led dot matix 8x8 be 16x8 using shift register" ?.

sorry i can't draw the schema for this.

#### PaulRB

#3
##### Sep 19, 2013, 02:51 pm
Do you have the circuit working for 1 8x8 matrix? If you can post schematic and sketch for that we can suggest the best and easiest way to add another 8x8 matrix.

If you are currently using 1 or 2 shift registers, then I guess you will need one more shift register. But need to know more about the Vff of the leds, your series resistors etc.

Paul

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