Sensor de Luz con Arduino y Relays

Sensor de Luz con Arduino y Relays

Con ayuda de nuestro sensor de luz lograremos desarrollar un programa en Arduino que permitirá controlar un relay de acuerdo a la variación de luz detectada en el ambiente.


Software Arduino
Módulo Sensor de Luz
Módulo Relay de 5v

Preparando el programa

Para comenzar abrimos nuestro IDE Arduino y necesitaremos reconocer los pines que vamos a utilizar en mi caso usare para el sensor de luz el pin A0 y para el módulo relay el pin 2 digital.

Programando arduino sensor luz relay

En la función loop asignamos la lectura del pin del sensor de luz hacia la variable "sensorvalor" donde se almacenará el valor obtenido dependiendo de la luz del medio en que se encuentra.

Luego haremos un condicional if para comparar el valor obtenido del sensor de luz, este valor debe calibrarse según el lugar donde se encuentre el sensor. En mi caso lo he configurado con el valor de 440.

En caso de que se cumpla la condición de que el sensor detecte el valor de luz mayor a 440 el relay se apagará, en este caso indique el valor al ledpin2 de HIGH, esto es porque mi módulo relay funciona a la inversa. Cuando se le indica el valor HIGH se apaga y cuando se indica el valor LOW se enciende. Con esto hago que en una zona donde no haya luz el sensor automáticamente active el relay y este accione el switch para un foco dando luz al ambiente, en caso contrario se apaga.

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