Датчик освещенности на

BH1750 датчик внешней освещенности на плате имеет 16-разрядный A2D встроенный конвертер, который может напрямую выводить цифровой сигнал. Датчик выдает значение в люксах (Лк) и не требует сложных расчетов в эскизе. Работа с BH1750 происходит с помощью протокола I2C.

Подключение

Начните с подключения радиол

Сенсор	Arduino	Коментарий
GND	GND	Черный
VCC	VCC (3.3-5V)	Красный
ADDR	GND	Черный
SCL	A5(аналоговый вход)	Синий
SDA	A4(аналоговый вход)	Зеленый

Пример

В этом примере используется внешняя библиотека BH1750. Пожалуйста, установите его и перезапустите среду разработки Arduino перед тем, как компилировать.

/**
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
 * Copyright (C) 2013-2015 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 *******************************
 *
 * REVISION HISTORY
 * Version 1.0 - idefix
 * 
 * DESCRIPTION
 * Arduino BH1750FVI Light sensor
 * communicate using I2C Protocol
 * this library enable 2 slave device addresses
 * Main address  0x23
 * secondary address 0x5C
 * connect the sensor as follows :
 *
 *   VCC  >>> 5V
 *   Gnd  >>> Gnd
 *   ADDR >>> NC or GND  
 *   SCL  >>> A5
 *   SDA  >>> A4
 * https://www.mysensors.org/build/light-bh1750
 */


// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_RF24
//#define MY_RADIO_RFM69

#include <MySensors.h>  
#include <BH1750.h>
#include <Wire.h>

#define CHILD_ID_LIGHT 0
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

BH1750 lightSensor;

// V_LIGHT_LEVEL should only be used for uncalibrated light level 0-100%.
// If your controller supports the new V_LEVEL variable, use this instead for
// transmitting LUX light level.
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
// MyMessage msg(CHILD_ID_LIGHT, V_LEVEL);  
uint16_t lastlux;

void setup()  
{ 
  lightSensor.begin();
}

void presentation()  {
  // Send the sketch version information to the gateway and Controller
  sendSketchInfo("Light Lux Sensor", "1.0");

  // Register all sensors to gateway (they will be created as child devices)
  present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
}

void loop()      
{     
  uint16_t lux = lightSensor.readLightLevel();// Get Lux value
  Serial.println(lux);
  if (lux != lastlux) {
      send(msg.set(lux));
      lastlux = lux;
  }
  
  sleep(SLEEP_TIME);
}

/**

* The MySensors Arduino library handles the wireless radio link and protocol

* between your home built sensors/actuators and HA controller of choice.

* The sensors forms a self healing radio network with optional repeaters. Each

* repeater and gateway builds a routing tables in EEPROM which keeps track of the

* network topology allowing messages to be routed to nodes.

* Created by Henrik Ekblad <henrik.ekblad@mysensors.org>

* Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors

* Documentation: http://www.mysensors.org

* Support Forum: http://forum.mysensors.org

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* version 2 as published by the Free Software Foundation.

*******************************

* REVISION HISTORY

* Version 1.0 - idefix

* DESCRIPTION

* Arduino BH1750FVI Light sensor

* communicate using I2C Protocol

* this library enable 2 slave device addresses

* Main address 0x23

* secondary address 0x5C

* connect the sensor as follows :

* VCC >>> 5V

* Gnd >>> Gnd

* ADDR >>> NC or GND

* SCL >>> A5

* SDA >>> A4

* https://www.mysensors.org/build/light-bh1750

// Enable debug prints to serial monitor

#define MY_DEBUG

// Enable and select radio type attached

#define MY_RADIO_RF24

//#define MY_RADIO_RFM69

#include <MySensors.h>

#include <BH1750.h>

#include <Wire.h>

#define CHILD_ID_LIGHT 0

unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

BH1750 lightSensor;

// V_LIGHT_LEVEL should only be used for uncalibrated light level 0-100%.

// If your controller supports the new V_LEVEL variable, use this instead for

// transmitting LUX light level.

MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);

// MyMessage msg(CHILD_ID_LIGHT, V_LEVEL);

uint16_t lastlux;

void setup()

{

lightSensor.begin();

}

void presentation() {

// Send the sketch version information to the gateway and Controller

sendSketchInfo("Light Lux Sensor", "1.0");

// Register all sensors to gateway (they will be created as child devices)

present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);

}

void loop()

{

uint16_t lux = lightSensor.readLightLevel();// Get Lux value

Serial.println(lux);

if (lux != lastlux) {

send(msg.set(lux));

lastlux = lux;

}

sleep(SLEEP_TIME);

}

Документация

bh1750fvi-e.pdf

Перевёл Антон Вотчицев