74hc595 uln2803 arduino - ULN2803: 8 Channel Darlington Driver Solenoid/Unipolar
Arduino Shift Register Stepper Motor discuss controlling a 28BYJ48 stepper motor with a 74HC595 shift register, ULN2003, and Arduino.
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I created the Multiple LED Display Module to make prototypes with the Arduino is with standard components like 74HC595 (Multiplexer IC) and ULN2803.
On the proto board, youll notice a 74HC595 controlling a ULN2803 plugged to 8 leds. my arduino only has 14 digital pins (I need about 25 output)
Working LED Display Matrix Driver (74HC595 ULN2803) I'm not much of a C guy, and this is my first real Arduino project, so opinions are welcome.