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Persistence of Vision, v1.0

Documenting the first successful test using the idea of persistence of vision and my own LED circuit. Shown below is an ATMega8 microcontroller connected to 8 LEDs through 8-100 Ohm resistors. Flickering the LEDs in a certain order at a certain rate while being moved creates the illusion of text being written.

8x8 LED Matrix, 2nd Interation

Here is the second iteration of the circuit design for running the 8×8 LED Matrix. This time I attempted to lower the number of signal lines being run out of the ATMega1280 microcontroller by using 2x 74HC595 Shift Registers. Doing this reduced the number of signal lines from 16 to 3, a huge [...]