Basically it follow the tutorial of Row-columm Scanning to control an 8x8 LED Matrix, can be open in in Arduino IDE (1.5.7 in my case), File -> Examples -> 07.Display -> RowColumnScanning.
The connection follow the diagram:
To make it simple, I remove the two potentiometers, and ignore readSensors() in the code.
8 pcs of 220 ohm resistors are added to limit the current, to protect my board.
The 8*8 LED Matrix marked 1588BS, it should be the part number or model number. Actually I cannot find any marking to recognize the pin 1. I place it by chance.
To turn on any spot, set it low in the code:
pixels[x][y] = LOW;
- Implement walking bit to test all bit ON/OFF.