We are very found of Led dot matrix displays. I have made a Led matrix but using different techniques for driving it.
I tried to make it similar to a standard Television display. i have used the same techniques used in television for Row column scanning.
This is my First Inscrutable as i,m newbie. so please forgive me if i make any mistakes.
Step 1: Components Needed
1. Arduino nano X 1
2. Red led X 64
3. Zero PCB(Prototyping PCB board) X 1
4. connecting Wires
5. Soldering Iron and materials
Step 2: Making Led Matrix
I assume here that you already know the basics of electronics and led matrix.
we have to create a 8x8 led matrix. all the Anodes will be ROW and cathodes will be Column.
that means all the anodes of LEDs in a row will be common and same apply for cathodes(Column).
Finally we will get 8 column and 8 row.
Step 3: Connect Arduino Nano to LED Matrix
connect digital pins 2-9 to column 1-8 in sequence. and analog pins A0-A5 to row 1-6, digital pins 12-13 to row 7-8.
i don't use digital pins 12-13 so my matrix is working in 8x6 mode.
Step 4: The Firmware
Programming the Arduino: the Firmware
i have scanned the matrix using single pixel at a time just like T.V
my idea behind that was to make a display which can be driven by standard RGB signals. i will Try it in future with Monochrome display and then RGB directly driven by available video signals using arduino as display driver.