Navigation

    • Register
    • Login
    • OpenHardware.io
    • Categories
    • Recent
    • Tags
    • Popular
    1. Home
    2. henry north
    • Profile
    • Following
    • Followers
    • Topics
    • Posts
    • Best
    • Groups

    henry north

    @henry north

    1
    Reputation
    3
    Posts
    2
    Profile views
    0
    Followers
    0
    Following
    Joined Last Online

    henry north Follow

    Best posts made by henry north

    • RE: Keep getting error 'child_id 0 already exists in children of node 1, cannot add child'

      Thanks for the help. I cleared the eeprom again just to confirm that it isn't causing the problem and the connection still is not working.

      Here's the serial output from the gateway:

      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273906 TSF:MSG:READ,2-2-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273912 TSF:MSG:BC
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273915 TSF:MSG:FPAR REQ,ID=2
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273918 TSF:PNG:SEND,TO=0
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273923 TSF:CKU:OK
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273925 TSF:MSG:GWL OK
      2020-03-24 15:38:14 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:274456 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
      2020-03-24 15:38:15 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275932 TSF:MSG:READ,2-2-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
      2020-03-24 15:38:15 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275938 TSF:MSG:PINGED,ID=2,HP=1
      2020-03-24 15:38:15 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275946 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=OK:1
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275961 TSF:MSG:READ,2-2-0,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275970 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275978 TSF:MSG:READ,2-2-0,s=255,c=0,t=17,pt=0,l=5,sg=0:2.3.2
      2020-03-24 15:38:16 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 2 child 255
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275990 TSF:MSG:READ,2-2-0,s=255,c=3,t=6,pt=1,l=1,sg=0:0
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276008 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=6,pt=0,l=1,sg=0,ft=0,st=OK:M
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276016 TSF:MSG:READ,2-2-0,s=255,c=3,t=11,pt=0,l=18,sg=0:Air Quality Sensor
      2020-03-24 15:38:16 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 2 child 255
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276027 TSF:MSG:READ,2-2-0,s=255,c=3,t=12,pt=0,l=3,sg=0:1.0
      2020-03-24 15:38:16 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 2 child 255
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276037 TSF:MSG:READ,2-2-0,s=0,c=0,t=22,pt=0,l=0,sg=0:
      2020-03-24 15:38:16 WARNING (MainThread) [mysensors.sensor] child_id 0 already exists in children of node 2, cannot add child
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276047 TSF:MSG:READ,2-2-0,s=255,c=3,t=26,pt=1,l=1,sg=0:2
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276056 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=27,pt=1,l=1,sg=0,ft=0,st=OK:1
      2020-03-24 15:38:18 DEBUG (SyncWorker_11) [mysensors.persistence] Saving sensors to persistence file /config/mysensors1.pickle
      

      I've added it all as I'm not sure what is relevant😁

      Here is the mysensor config in the configuration.yaml file:

      mysensors:
        gateways:
          - device: '/dev/ttyUSB0'
            baud_rate: 115200
        optimistic: false
        persistence: true
        retain: true
        version: '2.3'
      
      posted in Home Assistant
      henry north
      henry north

    Latest posts made by henry north

    • RE: Keep getting error 'child_id 0 already exists in children of node 1, cannot add child'

      Thanks again for the advice. I added

      persistence_file: '/config/mysensors.json'
      

      to my configuration.yaml file after deleting mysensors.pickle and things seemed to work much better as I didn't get the initial error. However I did get these errors instead:

      2020-03-24 19:45:34 INFO (MainThread) [homeassistant.setup] Setting up mysensors
      2020-03-24 19:45:34 WARNING (SyncWorker_3) [mysensors.persistence] File does not exist or is not readable: /config/mysensors.json
      2020-03-24 19:45:34 WARNING (SyncWorker_3) [mysensors.persistence] Trying backup file: /config/mysensors.json.bak
      2020-03-24 19:45:34 WARNING (SyncWorker_3) [mysensors.persistence] File does not exist or is not readable: /config/mysensors.json.bak
      2020-03-24 19:45:34 WARNING (SyncWorker_3) [mysensors.persistence] Failed to load sensors from file: /config/mysensors.json
      2020-03-24 19:45:34 DEBUG (SyncWorker_10) [mysensors.persistence] Saving sensors to persistence file /config/mysensors.json
      2020-03-24 19:45:44 DEBUG (SyncWorker_2) [mysensors.persistence] Saving sensors to persistence file /config/mysensors.json
      

      And also I still can't get past the original point in the communications but perhaps that is now linked to the file permissions above:

      2020-03-24 19:45:34 INFO (MainThread) [mysensors] Connected to Serial<id=0xb272eab0, open=True>(port='/dev/ttyUSB0', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=0, xonxoff=False, rtscts=False, dsrdtr=False)
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors] Receiving 0;255;3;0;9;0 MCO:BGN:INIT GW,CP=RNNGA---,FQ=16,REL=255,VER=2.3.2
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:0 MCO:BGN:INIT GW,CP=RNNGA---,FQ=16,REL=255,VER=2.3.2
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:5 TSM:INIT
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:7 TSF:WUR:MS=0
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:15 TSM:INIT:TSP OK
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:18 TSM:INIT:GW MODE
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:21 TSM:READY:ID=0,PAR=0,DIS=0
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:24 MCO:REG:NOT NEEDED
      2020-03-24 19:45:35 INFO (MainThread) [mysensors.handler] n:0 c:255 t:3 s:14 p:Gateway startup complete.
      2020-03-24 19:45:35 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 0 child 255
      2020-03-24 19:45:35 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 0 child 255
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:28 MCO:BGN:INIT OK,TSP=1
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:36 TSM:READY:NWD REQ
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:41 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:
      2020-03-24 19:45:35 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:52 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=1,l=1,sg=0,ft=0,st=OK:0
      
      posted in Home Assistant
      henry north
      henry north
    • RE: Keep getting error 'child_id 0 already exists in children of node 1, cannot add child'

      Thanks for the help. I cleared the eeprom again just to confirm that it isn't causing the problem and the connection still is not working.

      Here's the serial output from the gateway:

      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273906 TSF:MSG:READ,2-2-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273912 TSF:MSG:BC
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273915 TSF:MSG:FPAR REQ,ID=2
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273918 TSF:PNG:SEND,TO=0
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273923 TSF:CKU:OK
      2020-03-24 15:38:13 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:273925 TSF:MSG:GWL OK
      2020-03-24 15:38:14 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:274456 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
      2020-03-24 15:38:15 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275932 TSF:MSG:READ,2-2-0,s=255,c=3,t=24,pt=1,l=1,sg=0:1
      2020-03-24 15:38:15 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275938 TSF:MSG:PINGED,ID=2,HP=1
      2020-03-24 15:38:15 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275946 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=25,pt=1,l=1,sg=0,ft=0,st=OK:1
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275961 TSF:MSG:READ,2-2-0,s=255,c=3,t=15,pt=6,l=2,sg=0:0100
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275970 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=15,pt=6,l=2,sg=0,ft=0,st=OK:0100
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275978 TSF:MSG:READ,2-2-0,s=255,c=0,t=17,pt=0,l=5,sg=0:2.3.2
      2020-03-24 15:38:16 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 2 child 255
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:275990 TSF:MSG:READ,2-2-0,s=255,c=3,t=6,pt=1,l=1,sg=0:0
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276008 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=6,pt=0,l=1,sg=0,ft=0,st=OK:M
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276016 TSF:MSG:READ,2-2-0,s=255,c=3,t=11,pt=0,l=18,sg=0:Air Quality Sensor
      2020-03-24 15:38:16 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 2 child 255
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276027 TSF:MSG:READ,2-2-0,s=255,c=3,t=12,pt=0,l=3,sg=0:1.0
      2020-03-24 15:38:16 DEBUG (MainThread) [homeassistant.components.mysensors.gateway] Node update: node 2 child 255
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276037 TSF:MSG:READ,2-2-0,s=0,c=0,t=22,pt=0,l=0,sg=0:
      2020-03-24 15:38:16 WARNING (MainThread) [mysensors.sensor] child_id 0 already exists in children of node 2, cannot add child
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276047 TSF:MSG:READ,2-2-0,s=255,c=3,t=26,pt=1,l=1,sg=0:2
      2020-03-24 15:38:16 DEBUG (MainThread) [mysensors.handler] n:0 c:255 t:3 s:9 p:276056 TSF:MSG:SEND,0-0-2-2,s=255,c=3,t=27,pt=1,l=1,sg=0,ft=0,st=OK:1
      2020-03-24 15:38:18 DEBUG (SyncWorker_11) [mysensors.persistence] Saving sensors to persistence file /config/mysensors1.pickle
      

      I've added it all as I'm not sure what is relevant😁

      Here is the mysensor config in the configuration.yaml file:

      mysensors:
        gateways:
          - device: '/dev/ttyUSB0'
            baud_rate: 115200
        optimistic: false
        persistence: true
        retain: true
        version: '2.3'
      
      posted in Home Assistant
      henry north
      henry north
    • Keep getting error 'child_id 0 already exists in children of node 1, cannot add child'

      Hi all,

      I'm trying to connect my first MySensors node (MQ135 gas sensor) to a serial gateway. This is connected to a raspberry pi 4 running Home Assistant on Hassio. However I keep on getting this error in the home assistant logs:error.PNG I have already tried clearing the eeprom but the sensor still won't appear in home assistant any ideas on how to solve this?
      Any help is greatly appreciated😁

      Here is the log output on my sensor node I'm trying to connect:

      17:08:18.717 -> 16 MCO:BGN:INIT NODE,CP=RNNNA---,FQ=8,REL=255,VER=2.3.2
      17:08:18.717 -> 28 TSM:INIT
      17:08:18.717 -> 28 TSF:WUR:MS=0
      17:08:18.717 -> 36 TSM:INIT:TSP OK
      17:08:18.717 -> 38 TSF:SID:OK,ID=2
      17:08:18.717 -> 40 TSM:FPAR
      17:08:18.717 -> 45 ?TSF:MSG:SEND,2-2-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
      17:08:20.713 -> 2054 !TSM:FPAR:NO REPLY
      17:08:20.748 -> 2056 TSM:FPAR
      

      Here is the sketch on the node:

      /*
       * 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) 2013-2019 Sensnology AB
       * Full contributor list: https://github.com/mysensors/MySensors/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.
       *
       *******************************
       *
       * DESCRIPTION
       *
       * 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
       *
       */
      
      // Enable debug prints to serial monitor
      #define MY_DEBUG
      
      // Enable and select radio type attached
      #define MY_RADIO_RF24
      //#define MY_RADIO_NRF5_ESB
      //#define MY_RADIO_RFM69
      //#define MY_RADIO_RFM95
      
      #include <MySensors.h>
      
      #define     CHILD_ID_MQ                   0
      /************************Hardware Related Macros************************************/
      #define     MQ_SENSOR_ANALOG_PIN         (0)  //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 interval(in milliseconds) between each samples in the
      //calibration 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 interval(in milliseconds) between each samples in
      //normal operation
      /**********************Application Related Macros**********************************/
      #define         GAS_LPG                      (0)
      #define         GAS_CO                       (1)
      #define         GAS_SMOKE                    (2)
      /*****************************Globals***********************************************/
      uint32_t 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
      uint16_t lastMQ = 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)
      
      
      MyMessage msg(CHILD_ID_MQ, V_LEVEL);
      
      void setup()
      {
          Ro = MQCalibration(
                   MQ_SENSOR_ANALOG_PIN);         //Calibrating the sensor. Please make sure the sensor is in clean air
      }
      
      void presentation()
      {
          // Send the sketch version information to the gateway and Controller
          sendSketchInfo("Air Quality Sensor", "1.0");
      
          // Register all sensors to gateway (they will be created as child devices)
          present(CHILD_ID_MQ, S_AIR_QUALITY);
      }
      
      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) {
              send(msg.set((int16_t)ceil(valMQ)));
              lastMQ = ceil(valMQ);
          }
      
          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 inVal=0;
      
          for (i=0; i<CALIBARAION_SAMPLE_TIMES; i++) {          //take multiple samples
              inVal += MQResistanceCalculation(analogRead(mq_pin));
              delay(CALIBRATION_SAMPLE_INTERVAL);
          }
          inVal = inVal/CALIBARAION_SAMPLE_TIMES;                   //calculate the average value
      
          inVal = inVal/RO_CLEAN_AIR_FACTOR;                        //divided by RO_CLEAN_AIR_FACTOR yields the Ro
          //according to the chart in the datasheet
      
          return inVal;
      }
      /*****************************  MQRead *********************************************
      Input:   mq_pin - analog channel
      Output:  Rs of the sensor
      Remarks: This function use MQResistanceCalculation to calculate the sensor resistance (Rs).
               The Rs changes as the sensor is in the different concentration 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])));
      }
      

      Here are the home assistant logs:

      2020-03-23 16:47:06 WARNING (MainThread) [mysensors.sensor] child_id 0 already exists in children of node 1, cannot add child
      2020-03-23 16:54:11 WARNING (MainThread) [mysensors.sensor] child_id 0 already exists in children of node 1, cannot add child
      2020-03-23 17:00:06 WARNING (MainThread) [mysensors.sensor] child_id 0 already exists in children of node 1, cannot add child
      2020-03-23 17:04:54 WARNING (MainThread) [mysensors.sensor] child_id 0 already exists in children of node 1, cannot add child
      2020-03-23 17:08:19 WARNING (MainThread) [mysensors.sensor] child_id 0 already exists in children of node 2, cannot add child
      
      posted in Home Assistant
      henry north
      henry north