Fundamentos de Informática II: Potenciómetro

El circuito utiliza tres LEDs. Cada uno de ellos tiene su pin negativo conectado a masa (GND) a través de una resistencia y su pin positivo (el más largo) conectado a una salida analógica (pines 9, 10 y 11 respectivamente) de la placa "Arduino".

Asimismo, un potenciómetro conectado a una entrada digital (pin A2) regula la intensidad de brillo de los LEDs, mientras que otro potenciómetro conectado a otra entrada digital (pin A3) controla el período de encendido y apagado. Los valores leídos de las entradas analógicas están comprendidos entre 0 y 1023.

El "sketch" comprueba en cada iteración el estado de las dos entradas digitales. Utiliza directamente el valor leído de la entrada analógica A3 como período de encendido/apagado expresado en milisegundos, y el valor leído de la entrada analógica A2 para regular la intensidad de brillo de los tres LEDs mediante valores comprendidos entre 0 y 255 (el valor de entrada leído se multiplica previamente por un factor de escala).

- Potentiometer.ino
- Potentiometer.jpg

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