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    843

    @843

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    Best posts made by 843

    • RE: [SOLVED] Getting "check wires" from serial monitor

      My mistake! I didn't actually run the presentation code. So I just moved

      present(CHILD_ID_DUST, S_DUST); 
      present(CHILD_ID_MQ, S_AIR_QUALITY);
      

      to within

      void setup()  
      

      and now everything shows up in HA 🙂

      posted in Troubleshooting
      843
      843

    Latest posts made by 843

    • RE: [SOLVED] Getting "check wires" from serial monitor

      My mistake! I didn't actually run the presentation code. So I just moved

      present(CHILD_ID_DUST, S_DUST); 
      present(CHILD_ID_MQ, S_AIR_QUALITY);
      

      to within

      void setup()  
      

      and now everything shows up in HA 🙂

      posted in Troubleshooting
      843
      843
    • RE: [SOLVED] Getting "check wires" from serial monitor

      @tbowmo

      Nice! It worked, its sending data now, but all i get is this. (maybe the problem here is on the HA side)

      
      
      
      
      16-09-08 19:56:11 WARNING (Thread-2) [mysensors.mysensors] Error decoding message from gateway, bad data received: Sending initial value
      
      16-09-08 19:56:11 WARNING (Thread-2) [mysensors.mysensors] Node 0 is unknown
      16-09-08 19:56:11 WARNING (Thread-2) [mysensors.mysensors] Node 0 is unknown
      16-09-08 19:56:11 WARNING (Thread-2) [mysensors.mysensors] Error decoding message from gateway, bad data received: Requesting initial value from controller
      
      16-09-08 19:56:11 WARNING (Thread-2) [mysensors.mysensors] Node 0 is unknown
      16-09-08 19:56:11 WARNING (Thread-2) [mysensors.mysensors] Node 0 is unknown
      16-09-08 19:56:13 WARNING (Thread-2) [mysensors.mysensors] Error decoding message from gateway, bad data received: 156.33 ug/m3
      
      16-09-08 19:56:13 WARNING (Thread-2) [mysensors.mysensors] Node 0 is unknown
      16-09-08 19:56:14 WARNING (Thread-2) [mysensors.mysensors] Error decoding message from gateway, bad data received: LPG: 0ppm    CO: 0ppm    SMOKE: 0ppm
      
      
      
      
      
      
      posted in Troubleshooting
      843
      843
    • RE: [SOLVED] Getting "check wires" from serial monitor

      @hek

      Thanks for your reply! I was looking for something like that, but I can't get it to work.

      Here is the code (i have just combined the MQ and SHARP examples from the MySensors lib)

      /*
        Vera Arduino MQ2
      
        connect the MQ2 sensor as follows :
      
        A H A   >>> 5V
        B		  >>> A0
        H       >>> GND
        B       >>> 10K ohm >>> GND
        
        Contribution: epierre
        Based on http://sandboxelectronics.com/?p=165
        
        License: Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)
       
        Modified by HEK to work in 1.4
      */
      
      /*
        Arduino Dust Sensor
      
        connect the sensor as follows :
      
        VCC       >>> 5V
        A         >>> A0
        GND       >>> GND
      
        Based on: http://www.dfrobot.com/wiki/index.php/Sharp_GP2Y1010AU 
        Authors: Cyrille Médard de Chardon (serialC), Christophe Trefois (Trefex)
        Contribution: epierre
        COnverted to 1.4 by Henrik Ekblad
        
        The dust sensor used (see purchase guide for latest link):
        http://rover.ebay.com/rover/1/711-53200-19255-0/1?icep_ff3=2&pub=5575069610&toolid=10001&campid=5337433187&customid=&icep_item=171259125886&ipn=psmain&icep_vectorid=229466&kwid=902099&mtid=824&kw=lg
        
      */
      
      
      
      //#define MY_GATEWAY_SERIAL
      
      #include <MyConfig.h>
      #include <MySensor.h>
      #include <SPI.h>
      #include <Wire.h>
      
      
      #define CHILD_ID_DUST 1
      #define CHILD_ID_MQ 2 
      
      
      
      
      /************************Hardware Related Macros************************************/
      #define         DUST_SENSOR_ANALOG_PIN       (A1)
      
      #define 	MQ_SENSOR_ANALOG_PIN         (A0)  //define which analog input channel you are going to use
      #define         RL_VALUE                     (5)     //define the load resistance on the board, in kilo ohms
      #define         RO_CLEAN_AIR_FACTOR          (9.83)  //RO_CLEAR_AIR_FACTOR=(Sensor resistance in clean air)/RO,
                                                           //which is derived from the chart in datasheet
      /***********************Software Related Macros************************************/
      #define         CALIBARAION_SAMPLE_TIMES     (50)    //define how many samples you are going to take in the calibration phase
      #define         CALIBRATION_SAMPLE_INTERVAL  (500)   //define the time interal(in milisecond) between each samples in the
                                                           //cablibration phase
      #define         READ_SAMPLE_INTERVAL         (50)    //define how many samples you are going to take in normal operation
      #define         READ_SAMPLE_TIMES            (5)     //define the time interal(in milisecond) between each samples in 
                                                           //normal operation
      /**********************Application Related Macros**********************************/
      #define         GAS_LPG                      (0)
      #define         GAS_CO                       (1)
      #define         GAS_SMOKE                    (2)
      /*****************************Globals***********************************************/
      
      
      unsigned long SLEEP_TIME = 30000; // Sleep time between reads (in milliseconds)
      //VARIABLES
      float Ro = 10000.0;    // this has to be tuned 10K Ohm
      int val = 0;           // variable to store the value coming from the sensor
      float valMQ = 0.0;
      float lastMQ = 0.0;
      float LPGCurve[3]  =  {2.3,0.21,-0.47};   //two points are taken from the curve. 
                                                          //with these two points, a line is formed which is "approximately equivalent"
                                                          //to the original curve. 
                                                          //data format:{ x, y, slope}; point1: (lg200, 0.21), point2: (lg10000, -0.59) 
      float COCurve[3]  =  {2.3,0.72,-0.34};    //two points are taken from the curve. 
                                                          //with these two points, a line is formed which is "approximately equivalent" 
                                                          //to the original curve.
                                                          //data format:{ x, y, slope}; point1: (lg200, 0.72), point2: (lg10000,  0.15) 
      float SmokeCurve[3] ={2.3,0.53,-0.44};    //two points are taken from the curve. 
                                                          //with these two points, a line is formed which is "approximately equivalent" 
                                                          //to the original curve.
                                                          //data format:{ x, y, slope}; point1: (lg200, 0.53), point2:(lg10000,-0.22)                                                     
      
      
      int val2 = 0;           // variable to store the value coming from the sensor
      float valDUST =0.0;
      float lastDUST =0.0;
      int samplingTime = 280;
      int deltaTime = 40;
      int sleepTime = 9680;
      float voMeasured = 0;
      float calcVoltage = 0;
      float dustDensity = 0;
      
      
      
      MySensor gw;
      
      MyMessage dustMsg(CHILD_ID_DUST, V_LEVEL);
      
      MyMessage msg(CHILD_ID_MQ, V_LEVEL);
      
      
      void setup()  
      { 
        
        while (!Serial) {
          ; // wait for serial port to connect. Needed for native USB port only
        }
        
        gw.begin();
      
        // Send the sketch version information to the gateway and Controller
        gw.sendSketchInfo("Multi Air Quality Sensor", "1.0");
        
        // Register all sensors to gateway (they will be created as child devices)
        gw.present(CHILD_ID_DUST, S_DUST);
        
        
        gw.present(CHILD_ID_MQ, S_AIR_QUALITY);  
       
        
        Ro = MQCalibration(MQ_SENSOR_ANALOG_PIN);         //Calibrating the sensor. Please make sure the sensor is in clean air 
        
       //when you perform the calibration  
      
      }
      
      void loop()      
      {     
        
        
        
        uint16_t valMQ = MQGetGasPercentage(MQRead(MQ_SENSOR_ANALOG_PIN)/Ro,GAS_CO);
        Serial.println(val);
        
         Serial.print("LPG:"); 
         Serial.print(MQGetGasPercentage(MQRead(MQ_SENSOR_ANALOG_PIN)/Ro,GAS_LPG) );
         Serial.print( "ppm" );
         Serial.print("    ");   
         Serial.print("CO:"); 
         Serial.print(MQGetGasPercentage(MQRead(MQ_SENSOR_ANALOG_PIN)/Ro,GAS_CO) );
         Serial.print( "ppm" );
         Serial.print("    ");   
         Serial.print("SMOKE:"); 
         Serial.print(MQGetGasPercentage(MQRead(MQ_SENSOR_ANALOG_PIN)/Ro,GAS_SMOKE) );
         Serial.print( "ppm" );
         Serial.print("\n");
           
        if (valMQ != lastMQ) {
            gw.send(msg.set((int)ceil(valMQ)));
            lastMQ = ceil(valMQ);
        }
        
        //gw.sleep(SLEEP_TIME);
        
        uint16_t voMeasured = analogRead(DUST_SENSOR_ANALOG_PIN);// Get DUST value
      
        // 0 - 5V mapped to 0 - 1023 integer values
        // recover voltage
        calcVoltage = voMeasured * (5.0 / 1024.0);
      
        // linear eqaution taken from http://www.howmuchsnow.com/arduino/airquality/
        // Chris Nafis (c) 2012
        dustDensity = (0.17 * calcVoltage - 0.1)*1000;
       
        Serial.print("Raw Signal Value (0-1023): ");
        Serial.print(voMeasured);
        
        Serial.print(" - Voltage: ");
        Serial.print(calcVoltage);
        
        Serial.print(" - Dust Density: ");
        Serial.println(dustDensity); // unit: ug/m3
       
        if (ceil(dustDensity) != lastDUST) {
            gw.send(dustMsg.set((int)ceil(dustDensity)));
            lastDUST = ceil(dustDensity);
        }
        
        
        gw.sleep(SLEEP_TIME); //sleep for: sleepTime 
      }
      
      /****************** MQResistanceCalculation ****************************************
      Input:   raw_adc - raw value read from adc, which represents the voltage
      Output:  the calculated sensor resistance
      Remarks: The sensor and the load resistor forms a voltage divider. Given the voltage
               across the load resistor and its resistance, the resistance of the sensor
               could be derived.
      ************************************************************************************/ 
      float MQResistanceCalculation(int raw_adc)
      {
        return ( ((float)RL_VALUE*(1023-raw_adc)/raw_adc));
      }
       
      /***************************** MQCalibration ****************************************
      Input:   mq_pin - analog channel
      Output:  Ro of the sensor
      Remarks: This function assumes that the sensor is in clean air. It use  
               MQResistanceCalculation to calculates the sensor resistance in clean air 
               and then divides it with RO_CLEAN_AIR_FACTOR. RO_CLEAN_AIR_FACTOR is about 
               10, which differs slightly between different sensors.
      ************************************************************************************/ 
      float MQCalibration(int mq_pin)
      {
        int i;
        float val=0;
       
        for (i=0;i<CALIBARAION_SAMPLE_TIMES;i++) {            //take multiple samples
          val += MQResistanceCalculation(analogRead(mq_pin));
          delay(CALIBRATION_SAMPLE_INTERVAL);
        }
        val = val/CALIBARAION_SAMPLE_TIMES;                   //calculate the average value
       
        val = val/RO_CLEAN_AIR_FACTOR;                        //divided by RO_CLEAN_AIR_FACTOR yields the Ro 
                                                              //according to the chart in the datasheet 
       
        return val; 
      }
      /*****************************  MQRead *********************************************
      Input:   mq_pin - analog channel
      Output:  Rs of the sensor
      Remarks: This function use MQResistanceCalculation to caculate the sensor resistenc (Rs).
               The Rs changes as the sensor is in the different consentration of the target
               gas. The sample times and the time interval between samples could be configured
               by changing the definition of the macros.
      ************************************************************************************/ 
      float MQRead(int mq_pin)
      {
        int i;
        float rs=0;
       
        for (i=0;i<READ_SAMPLE_TIMES;i++) {
          rs += MQResistanceCalculation(analogRead(mq_pin));
          delay(READ_SAMPLE_INTERVAL);
        }
       
        rs = rs/READ_SAMPLE_TIMES;
       
        return rs;  
      }
       
      /*****************************  MQGetGasPercentage **********************************
      Input:   rs_ro_ratio - Rs divided by Ro
               gas_id      - target gas type
      Output:  ppm of the target gas
      Remarks: This function passes different curves to the MQGetPercentage function which 
               calculates the ppm (parts per million) of the target gas.
      ************************************************************************************/ 
      int MQGetGasPercentage(float rs_ro_ratio, int gas_id)
      {
        if ( gas_id == GAS_LPG ) {
           return MQGetPercentage(rs_ro_ratio,LPGCurve);
        } else if ( gas_id == GAS_CO ) {
           return MQGetPercentage(rs_ro_ratio,COCurve);
        } else if ( gas_id == GAS_SMOKE ) {
           return MQGetPercentage(rs_ro_ratio,SmokeCurve);
        }    
       
        return 0;
      }
       
      /*****************************  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 *pcurve)
      {
        return (pow(10,( ((log(rs_ro_ratio)-pcurve[1])/pcurve[2]) + pcurve[0])));
      }
      

      The only output I'm getting is still just "check wires".

      posted in Troubleshooting
      843
      843
    • RE: [SOLVED] Getting "check wires" from serial monitor

      Aaaah, thanks for the quick reply! But I dont want a radio connection. I just want to use the USB directly to the rpi. What to do?

      posted in Troubleshooting
      843
      843
    • [SOLVED] Getting "check wires" from serial monitor

      Hey all!

      I'm terribly new at this and maybe I have totally misunderstood... I want to connect the MQ-2 (gas sensor) and the SHARP GP2Y1010AU0F (dust sensor) through my Arduino one R3 to a raspberry pi 3B to be used in Home Assistant (https://home-assistant.io).

      I have used both of these separately and together outputting their data through the serial monitor and it works great. But when I try using any examples from MySensors the output from the serial monitor is always "check wires". I have tried going through the FAQ and the forum to no avail. Can anybody nudge me in the right direction?

      Thanks!

      posted in Troubleshooting
      843
      843