Tri-State Logic

Introduction So far we have sent one of two values to any Arduino output pin, either HIGH or LOW. This project shows how we can exploit a third state of the Arduino pins to reduce the number of pins needed to control LEDs. In the project, we'll control 2 LEDs using only one Arduino pin. You Will Need 4 x Diodes 2 x LEDs 2 x 330 Ohm Resistors Jumper Wires Diodes have to be the correct way around to function. ...

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