We’ve all been there. A big bag of resistors all mixed up. Maybe you bought them cheap. Maybe your neatly organized drawers spilled. Of course, you can excruciatingly read the color codes one by one.

We’ve all been there. A big bag of resistors all mixed up. Maybe you bought them cheap. Maybe your neatly organized drawers spilled. Of course, you can excruciatingly read the color codes one by one.

O circuito é montado de forma simples, aproveitando o resistor de pull-up interno do Arduino, o que elimina a necessidade de um resistor externo para o botão. int led1 = 11; int led2 = 12; int led3 = ...