24X8 LED Matrix
A board to drive a 24X8 LED Matrix from an Arduino
Resistors from The SN74HC595's are 150 Ohms and drive the rows, with the far right output being row 1 and the far left driving the 24th row. The headers from the CD4017 on the right of the board are the following from top to bottom:
Pin 11 on the arduino
pin 10
pin 13
Vcc+ 5V
Pin 8
Pin 9
GND
The transistors are NPN 2n3904's
The top 3 IC's are SN74HC595's and the other IC is a CD4017 decade counter
The 8 resistors from the transistors are 1k Ohm