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  1. Home
  2. Troubleshooting
  3. multiple DS18D20 does not report temperature

multiple DS18D20 does not report temperature

Scheduled Pinned Locked Moved Troubleshooting
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  • Tomasz PazioT Offline
    Tomasz PazioT Offline
    Tomasz Pazio
    wrote on last edited by
    #13

    Now trying with one and two. No more.

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    • Tomasz PazioT Offline
      Tomasz PazioT Offline
      Tomasz Pazio
      wrote on last edited by
      #14

      There are two parts of issue:
      problem with no data on vera was on this part:
      // Only send data if temperature has changed and no error
      #if COMPARE_TEMP == 1
      if (lastTemperature[i] != temperature && temperature != -127.00 && temperature != 85.00) {
      #else
      if (temperature != -127.00 && temperature != 85.00) {
      #endif

      my reading is now -127.00
      changed to -200 and now I can see the data on vera.
      however this is not correct data because should be something like 27 Celsius.
      so there is something with conversion as well :(

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      • H Offline
        H Offline
        hek
        Admin
        wrote on last edited by
        #15

        -127 means something is wrong when reading your dallas sensors. It is a an error code. So you actually only have an issue with your temp sensors.

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        • Tomasz PazioT Offline
          Tomasz PazioT Offline
          Tomasz Pazio
          wrote on last edited by
          #16

          2015-08-01 15_47_46-Poczta.png
          when I use Example for Dallas multiple sensors it works fine.
          2015-08-01 15_49_37-Poczta.png
          when I use example for one-wire temperature sensor ds18.... it works fine as well
          so i can reed but can not use Mysensors sketch :(

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          • H Offline
            H Offline
            hek
            Admin
            wrote on last edited by
            #17

            Very strange. Are you using the same OneWire library in both cases?

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            • Tomasz PazioT Offline
              Tomasz PazioT Offline
              Tomasz Pazio
              wrote on last edited by
              #18

              yes the same.

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              • Tomasz PazioT Offline
                Tomasz PazioT Offline
                Tomasz Pazio
                wrote on last edited by
                #19

                any idea?

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                • H Offline
                  H Offline
                  hek
                  Admin
                  wrote on last edited by
                  #20

                  No, must be hundreds of users running Dallas sensors here. Trying to figure out if anything has changed in the library/dependencies but I don't see anything except the thing I mentioned earlier here.

                  And you can get the sensor running without MySensors library loaded...

                  Guess I have to hook up a Dallas sensor myself to check (tomorrow or so..)

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                  • R Offline
                    R Offline
                    rvendrame
                    Hero Member
                    wrote on last edited by
                    #21

                    Are you powering your Dallas sensor using the 'one-wire' method? Is your arduino 5V or 3.3V?

                    Home Assistant / Vera Plus UI7
                    ESP8266 GW + mySensors 2.3.2
                    Alexa / Google Home

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                    • Tomasz PazioT Offline
                      Tomasz PazioT Offline
                      Tomasz Pazio
                      wrote on last edited by Tomasz Pazio
                      #22

                      exactly like o the example so power from arduino 5V (not parasite)

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                      • R Offline
                        R Offline
                        rvendrame
                        Hero Member
                        wrote on last edited by
                        #23

                        Can you post the serial monitor logs, from both gateway and node?

                        Home Assistant / Vera Plus UI7
                        ESP8266 GW + mySensors 2.3.2
                        Alexa / Google Home

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                        • Tomasz PazioT Offline
                          Tomasz PazioT Offline
                          Tomasz Pazio
                          wrote on last edited by
                          #24

                          @rvendrame, why You need log from gateway? When no values are sent from node than nothing on Vera. When use some dummy values which are visible in node log - than those values are in Vera.

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                          • H Offline
                            H Offline
                            hek
                            Admin
                            wrote on last edited by
                            #25

                            @hek said:

                            Guess I have to hook up a Dallas sensor myself to check (tomorrow or so..)

                            Ok, tried latest from 1.5 branch and it works fine here with 2 hooked up DS18D20.

                            sensor started, id=200, parent=0, distance=1
                            send: 200-200-0-0 s=255,c=3,t=11,pt=0,l=18,sg=0,st=ok:Temperature Sensor
                            send: 200-200-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=ok:1.1
                            send: 200-200-0-0 s=0,c=0,t=6,pt=0,l=0,sg=0,st=ok:
                            send: 200-200-0-0 s=1,c=0,t=6,pt=0,l=0,sg=0,st=ok:
                            send: 200-200-0-0 s=0,c=1,t=0,pt=7,l=5,sg=0,st=ok:27.9
                            send: 200-200-0-0 s=1,c=1,t=0,pt=7,l=5,sg=0,st=ok:28.0
                            send: 200-200-0-0 s=0,c=1,t=0,pt=7,l=5,sg=0,st=ok:31.5
                            send: 200-200-0-0 s=1,c=1,t=0,pt=7,l=5,sg=0,st=ok:32.0
                            
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                            • Tomasz PazioT Offline
                              Tomasz PazioT Offline
                              Tomasz Pazio
                              wrote on last edited by
                              #26

                              removed all Arduino related stuff from PC
                              Installed new IDE and libs from https://github.com/mysensors/Arduino/archive/master.zip
                              now I have progress, there are no readings no mater on which sketch hahaha.

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                              • C Offline
                                C Offline
                                clio75
                                wrote on last edited by
                                #27

                                Hi,

                                I have the same problem. No temperature is transported to GW.
                                This log is from Sensor:
                                req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:
                                sensor started, id=255, parent=0, distance=1
                                req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:
                                req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:
                                req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:

                                I have added some exstra lines in serial printout so I know that ds1820 is found and read.

                                req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:
                                sensor started, id=255, parent=0, distance=1
                                req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:
                                req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:
                                **Sensors found
                                1
                                **req id
                                send: 255-255-0-0 s=255,c=3,t=3,pt=0,l=0,sg=0,st=ok:
                                temp :
                                23.80

                                But This value is not transported to GW.
                                Any idee ?

                                Thanx

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