implementing multiple sensors

[Dany]

@pgo The RGB Colorpicker works already in openhab.
I have some problem in arduino side...i tried update the sample DimmerActuator code, but didn't work. I tried korttoma's code, but it didn't works for me, too.

(e.g. message.header.childId -didn't work)

[pgo]

@Dany said:

@pgo The RGB Colorpicker works already in openhab.
I have some problem in arduino side...i tried update the sample DimmerActuator code, but didn't work. I tried korttoma's code, but it didn't works for me, too.

(e.g. message.header.childId -didn't work)

Can you post the HW connections you use on arduino and the items/sitemap of the dimmer in openHAB? I can then check on my install.

[niccodemi]

I combined Humidity and Lux code. Serial monitor works ok (see below) but for some reason when I try to add node to Vera I get only node, temp and lux (no humidity). I guess something is wrong in combined sketch?

serial monitor

sensor started, id 1
send: 1-1-0-0 s=255,c=0,t=17,pt=0,l=5,st=ok:1.4.1
send: 1-1-0-0 s=255,c=3,t=6,pt=1,l=1,st=ok:0
read: 0-0-1 s=255,c=3,t=6,pt=0,l=1:M
send: 1-1-0-0 s=255,c=3,t=11,pt=0,l=12,st=ok:Humidity/Lux
send: 1-1-0-0 s=255,c=3,t=12,pt=0,l=3,st=ok:1.0
send: 1-1-0-0 s=0,c=0,t=7,pt=0,l=5,st=ok:1.4.1
send: 1-1-0-0 s=1,c=0,t=6,pt=0,l=5,st=ok:1.4.1
send: 1-1-0-0 s=2,c=0,t=16,pt=0,l=5,st=ok:1.4.1
send: 1-1-0-0 s=1,c=1,t=0,pt=7,l=5,st=ok:28.6
T: 28.60
send: 1-1-0-0 s=0,c=1,t=1,pt=7,l=5,st=ok:61.8
H: 61.80
2
send: 1-1-0-0 s=2,c=1,t=23,pt=3,l=2,st=ok:2
2

sketch

#include <SPI.h>
#include <MySensor.h>  
#include <DHT.h> 
#include <BH1750.h>
#include <Wire.h> 

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define CHILD_ID_LIGHT 2
#define HUMIDITY_SENSOR_DIGITAL_PIN 3
#define LIGHT_SENSOR_ANALOG_PIN 0
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

BH1750 lightSensor;
MySensor gw;
DHT dht;
float lastTemp;
float lastHum;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
uint16_t lastlux;


void setup()  
{ 
  gw.begin();
  dht.setup(HUMIDITY_SENSOR_DIGITAL_PIN); 

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("Humidity/Lux", "1.0");

  // Register all sensors to gw (they will be created as child devices)
  gw.present(CHILD_ID_HUM, S_HUM);
  gw.present(CHILD_ID_TEMP, S_TEMP);
  gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
  
  metric = gw.getConfig().isMetric;
  lightSensor.begin();
}

void loop()      
{  
  delay(dht.getMinimumSamplingPeriod());

  float temperature = dht.getTemperature();
  if (isnan(temperature)) {
      Serial.println("Failed reading temperature from DHT");
  } else if (temperature != lastTemp) {
    lastTemp = temperature;
    if (!metric) {
      temperature = dht.toFahrenheit(temperature);
    }
    gw.send(msgTemp.set(temperature, 1));
    Serial.print("T: ");
    Serial.println(temperature);
  }
  
  float humidity = dht.getHumidity();
  if (isnan(humidity)) {
      Serial.println("Failed reading humidity from DHT");
  } else if (humidity != lastHum) {
      lastHum = humidity;
      gw.send(msgHum.set(humidity, 1));
      Serial.print("H: ");
      Serial.println(humidity);
  }     
  uint16_t lux = lightSensor.readLightLevel();// Get Lux value
  Serial.println(lux);
  if (lux != lastlux) {
      gw.send(msg.set(lux));
      lastlux = lux;
  }
  

  gw.sleep(SLEEP_TIME); //sleep a bit
}

[pgo]

@niccodemi Check:
gw.send(msgTemp.set(temperature, 1));
gw.send(msgHum.set(humidity, 1));
gw.send(msg.set(lux)); I miss here ",1"

[niccodemi]

@pgo thanks, all sensors show up now.

[niccodemi]

One more combined sketch - UV / Light Lux. Everything seems to work ok except only 2 items show up in vera: node and lux sensor. UV sensor is missing.

serial output

sensor started, id 6
send: 6-6-0-0 s=255,c=0,t=17,pt=0,l=5,st=ok:1.4.1
send: 6-6-0-0 s=255,c=3,t=6,pt=1,l=1,st=ok:0
read: 0-0-6 s=255,c=3,t=6,pt=0,l=1:M
send: 6-6-0-0 s=255,c=3,t=11,pt=0,l=13,st=ok:UV/Lux Sensor
send: 6-6-0-0 s=255,c=3,t=12,pt=0,l=3,st=ok:1.0
send: 6-6-0-0 s=0,c=0,t=16,pt=0,l=5,st=ok:1.4.1
send: 6-6-0-0 s=0,c=0,t=11,pt=0,l=5,st=ok:1.4.1
Lux reading: 48
send: 6-6-0-0 s=0,c=1,t=23,pt=7,l=5,st=ok:48.0
Uv reading: 583
Uv index: 5
send: 6-6-0-0 s=0,c=1,t=11,pt=7,l=5,st=ok:5.0

sketch code

/*
  Vera 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 :
  Light sensor
  VCC  >>> 5V
  Gnd  >>> Gnd
  ADDR >>> NC or GND  
  SCL  >>> A5
  SDA  >>> A4
  
  UV sensor
  VCC  >>> 5V
  Gnd  >>> Gnd
  OUT  >>> A3
  Contribution: idefix
 
*/

#include <SPI.h>
#include <MySensor.h>  
#include <BH1750.h>
#include <Wire.h> 

#define CHILD_ID_LIGHT 0
#define CHILD_ID_UV 0
#define LIGHT_SENSOR_ANALOG_PIN 0
#define UV_SENSOR_ANALOG_PIN 3
unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)

BH1750 lightSensor;
MySensor gw;
MyMessage msg(CHILD_ID_LIGHT, V_LIGHT_LEVEL);
MyMessage uvMsg(CHILD_ID_UV, V_UV);
uint16_t lastlux;
int lastUV = -1;
int uvIndexValue [13] = { 50, 227, 318, 408, 503, 606, 696, 795, 881, 976, 1079, 1170, 3000};
int uvIndex;

void setup()  
{ 
  gw.begin();
  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("UV/Lux Sensor", "1.0");
  // Register all sensors to gateway (they will be created as child devices)
  gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
  gw.present(CHILD_ID_UV, S_UV);
  
  lightSensor.begin();
}

void loop()      
{     
  uint16_t lux = lightSensor.readLightLevel();// Get Lux value
  Serial.print("Lux reading: ");
  Serial.println(lux);
  if (lux != lastlux) {
      gw.send(msg.set(lux, 1));
      lastlux = lux;
  }
  uint16_t uv = analogRead(0);// Get UV value
  Serial.print("Uv reading: ");
  Serial.println(uv);
  for (int i = 0; i < 13; i++)
  {
    if (uv <= uvIndexValue[i]) 
    {
      uvIndex = i;
      break;
    }
  }
  Serial.print("Uv index: ");
  Serial.println(uvIndex);

  if (uvIndex != lastUV) {
      gw.send(uvMsg.set(uvIndex, 1));
      lastUV = uvIndex;
  }
  gw.sleep(SLEEP_TIME);
}

[hek]

There is a perfectly good explanation why UV sensor isn't showing up. MySensors does not distribute any device files for it. It might work with the rfx-plugin-device:

http://code.mios.com/trac/mios_rfxcom/browser

[BulldogLowell]

@hek

I remember @epierre working on the sensor, I helped him with the little sort logic on the sensor readings to determine the index... I cannot recall what device he used to present the index within Vera...

In china right now, the Great Firewall preventing a good search on the forum for that project...

perhaps @epierre can recall for you

[niccodemi]

@hek @BulldogLowell UV sensor works fine as standalone sensor / node. After trying different things I noticed that if I switch order of

these lines

  gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);
  gw.present(CHILD_ID_UV, S_UV);
  

to these below

  gw.present(CHILD_ID_UV, S_UV);
  gw.present(CHILD_ID_LIGHT, S_LIGHT_LEVEL);

then node and UV sensor show up in vera, but lux light is missing. It seems that sensor presented 1st gets recognized but second one omitted. Could it have to do anything with both devices using analog pins?

[BulldogLowell]

CHILD_ID_LIGHT and CHILD_ID_UV are defined as two different nonzero numbers, right?

Sorry I cannot read your sketch here in China!!

[niccodemi]

@BulldogLowell no, they were both defined as 0. I changed them to 1 and 2 and now three devices show up. Thanks.

[BulldogLowell]

Good. You may be able to use zero but certainly not for both!

[John Connolly]

I think my biggest challenge is understanding when to combine the additional sensor in the main loop or when to put it in another. The whole idea of interrupts is baffling to me too.