LED Messaging Waver ( using persistence of Vision to create letters and words)



The circuit consists of LEDs tied from the 7 pins of portd to the first 7 pins of portb. The remaining pin (portb.7) can be used to switch to different messages or change colour…. This pin is connected to a button with a 10K pull up resister to +5V and a micro switch to GND. (not shown on this schematic)

-LED Messaging Waver ( using persistence of Vision to create letters and words)



The circuit consists of LEDs tied from the 7 pins of portd to the first 7 pins of portb.　The remaining pin (portb.7) can be used to switch to different messages or change colour…. This pin is connected to a button with a 10K pull up resister to +5V and a micro switch to GND.　 (not shown on this schematic)