Robomart 8 x 8 Dot Matrix Led Display (Big)

Based on the electrode connections, two types of LED matrices are explained below:An LED matrix with a common anode for LEDs in a row ? when a row of LEDs feature a common anode, the LEDs in each column must include a common cathode.An LED matrix with a common cathode for LEDs in a row ? when a row of LEDs feature a common cathode , the LEDs in each column must include a common anode. Figure 1 displays a matrix construction of the common anode type. A single matrix is formed by sixty - four LEDs arranged in eight columns and eight rows ( 8 x 8 ). The anodes of the five LEDs forming one row are connected together. Similarly, the cathodes of the eight LEDs of a column are connected together. In this arrangement of LEDs, the cathodes are switched to turn the LEDs of a row ON or OFF.