Posts made by Unci

Unci

Thx helped me, seems to work correct in Pimatic.
Just have to check if the values of the MQ135 are correct.

Unci

Thx to your fast answers.

@mfalkvidd thx that was the reason!

@Sparkman thx changed it, seems to work

Have seen some output in the serial monitor, now i just have to read more about the meaning off it ^^

Unci

Hi everybody,
sry for my bad english at the beginning!

I'm very noobie in arduino & my sensors.

I try to combining a DHT11 & a MQ135 on a arduino nano with a NRF24I01+.
I think the connection should be ok.

My problem is the sketch! I surely made a mistake, but i dont know where! I took the HumiditySensor Example and the code from here:
arduino/AirQuality-MQ135.ino

/**
 * 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 - Henrik EKblad
 * 
 * DESCRIPTION
 * This sketch provides an example how to implement a humidity/temperature
 * sensor using DHT11/DHT-22 
 * http://www.mysensors.org/build/humidity
 */
 
#include <SPI.h>
#include <MySensor.h>  
#include <DHT.h> 
#include <Wire.h>

#define CHILD_ID_HUM 0
#define CHILD_ID_TEMP 1
#define HUMIDITY_SENSOR_DIGITAL_PIN 8
#define CHILD_ID_AIQ 3
#define AIQ_SENSOR_ANALOG_PIN 0

#define MQ135_DEFAULTPPM 399 //default ppm of CO2 for calibration
#define MQ135_DEFAULTRO 68550 //default Ro for MQ135_DEFAULTPPM ppm of CO2
#define MQ135_SCALINGFACTOR 116.6020682 //CO2 gas value
#define MQ135_EXPONENT -2.769034857 //CO2 gas value
#define MQ135_MAXRSRO 2.428 //for CO2
#define MQ135_MINRSRO 0.358 //for CO2

unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)
float mq135_ro = 10000.0;    // this has to be tuned 10K Ohm
int val = 0;                 // variable to store the value coming from the sensor
float valAIQ =0.0;
float lastAIQ =0.0;

MySensor gw;
DHT dht;
MyMessage msg(CHILD_ID_AIQ, V_LEVEL);

float lastTemp;
float lastHum;
boolean metric = true; 
MyMessage msgHum(CHILD_ID_HUM, V_HUM);
MyMessage msgTemp(CHILD_ID_TEMP, V_TEMP);


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

  // Send the Sketch Version Information to the Gateway
  gw.sendSketchInfo("Humidity", "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);
  
  metric = gw.getConfig().isMetric;

  gw.begin();

  // Send the sketch version information to the gateway and Controller
  gw.sendSketchInfo("AIQ Sensor MQ135", "1.0");

  // Register all sensors to gateway (they will be created as child devices)
  gw.present(CHILD_ID_AIQ, S_AIR_QUALITY); 
}

/*
 * get the calibrated ro based upon read resistance, and a know ppm
 */
long mq135_getro(long resvalue, double ppm) {
return (long)(resvalue * exp( log(MQ135_SCALINGFACTOR/ppm) / MQ135_EXPONENT ));
}

/*
 * get the ppm concentration
 */
double mq135_getppm(long resvalue, long ro) {
double ret = 0;
double validinterval = 0;
validinterval = resvalue/(double)ro;
if(validinterval<MQ135_MAXRSRO && validinterval>MQ135_MINRSRO) {
ret = (double)MQ135_SCALINGFACTOR * pow( ((double)resvalue/ro), MQ135_EXPONENT);
}
return ret;
}

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 valr = analogRead(AIQ_SENSOR_ANALOG_PIN);// Get AIQ value
  Serial.println(val);
  uint16_t val =  ((float)22000*(1023-valr)/valr); 
  //during clean air calibration, read the Ro value and replace MQ135_DEFAULTRO value with it, you can even deactivate following function call.
  mq135_ro = mq135_getro(val, MQ135_DEFAULTPPM);
  //convert to ppm (using default ro)
  valAIQ = mq135_getppm(val, MQ135_DEFAULTRO);

  Serial.print ( "Val / Ro / value:");
  Serial.print ( val);
  Serial.print ( " / ");
  Serial.print ( mq135_ro);
  Serial.print ( " / ");
  Serial.print ( valAIQ);

 
  if (valAIQ != lastAIQ) {
      gw.send(msg.set(MQ135_DEFAULTPPM+(int)ceil(valAIQ)));
      lastAIQ = ceil(valAIQ);
  }
 
  // Power down the radio.  Note that the radio will get powered back up
  // on the next write() call.
  gw.sleep(SLEEP_TIME); //sleep for: sleepTime

}
/*****************************  MQGetPercentage **********************************
Input:   rs_ro_ratio - Rs divided by Ro
         pcurve      - pointer to the curve of the target gas
Output:  ppm of the target gas
Remarks: By using the slope and a point of the line. The x(logarithmic value of ppm) 
         of the line could be derived if y(rs_ro_ratio) is provided. As it is a 
         logarithmic coordinate, power of 10 is used to convert the result to non-logarithmic 
         value.
************************************************************************************/ 
int  MQGetPercentage(float rs_ro_ratio, float ro, float *pcurve)
{
  return (double)(pcurve[0] * pow(((double)rs_ro_ratio/ro), pcurve[1]));
}

When I try to upload it there comes the output:

Arduino: 1.6.9 (Windows 10), Board: "Arduino Nano, ATmega328"

WARNUNG: Kategorie '' in der Bibliothek UIPEthernet ist ungültig und wird auf 'Uncategorized' festgelegt
libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::MySensor(MyTransport&, MyHw&)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::MySensor(MyTransport&, MyHw&)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::getNodeId()'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::getConfig()'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::sendWrite(unsigned char, MyMessage&)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::getLastMessage()'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::saveState(unsigned char, unsigned char)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::loadState(unsigned char)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::wait(unsigned long)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::process()'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::requestNodeId()'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::findParentNode()'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::sendRoute(MyMessage&)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::send(MyMessage&, bool)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::sendBatteryLevel(unsigned char, bool)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::present(unsigned char, unsigned char, char const*, bool)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::sendSketchInfo(char const*, char const*, bool)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::request(unsigned char, unsigned char, unsigned char)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::requestTime(void (*)(unsigned long))'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::setupNode()'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::begin(void (*)(MyMessage const&), unsigned char, bool, unsigned char)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::sleep(unsigned long)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::sleep(unsigned char, unsigned char, unsigned long)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

libraries\MySensors\MySensor.cpp.o: In function `MySensor::MySensor(MyTransport&, MyHw&)':

Mehrere Bibliotheken wurden für "DHT.h" gefunden
 Benutzt: C:\Users\Mike\Documents\Arduino\libraries\DHT
 Nicht benutzt: C:\Users\Mike\Documents\Arduino\libraries\DHT_sensor_library
C:\Users\Mike\Documents\Arduino\libraries\MySensors/MySensor.cpp:52: multiple definition of `MySensor::sleep(unsigned char, unsigned char, unsigned char, unsigned char, unsigned long)'

sketch\MySensor.cpp.o:sketch/MySensor.cpp:52: first defined here

collect2.exe: error: ld returned 1 exit status

exit status 1
Fehler beim Kompilieren für das Board Arduino Nano.

Dieser Bericht wäre detaillierter, wenn die Option
"Ausführliche Ausgabe während der Kompilierung"
in Datei -> Voreinstellungen aktiviert wäre.

I hope somebody can help me!

Thx Unci