Instructions

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Lektion 17: 74HC595 Shi register
The 74HC595 is a combination of an 8-digit shi register and flags. It is
equipped with a tri-state output. In this project the 74HC595 is used to
use 8 LEDs to save resources. The required I/O ports are reduced from 8
to 3 ports.
You need:
Mega2560 board 1x
USB cable 1x
Red M5 LED 4x
220 Ω resistor 8x
Breadboard 1x
Jumper cable 24x
4x Green M5 LED
1x 75HC595 Chip