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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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  • H Offline
    H Offline
    hek
    Admin
    wrote on last edited by
    #6

    From the log above it looks like at least 2 temp-sensors were found (and presented) to your controller.

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    0
    • Tomasz PazioT Offline
      Tomasz PazioT Offline
      Tomasz Pazio
      wrote on last edited by
      #7

      so something wrong with presenting readings :( what to check on vera side?

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      • H Offline
        H Offline
        hek
        Admin
        wrote on last edited by
        #8

        If you continue monitoring the nodes log. Does it send anything after the log you posted above?

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        • Tomasz PazioT Offline
          Tomasz PazioT Offline
          Tomasz Pazio
          wrote on last edited by
          #9

          no, only this one, and nothing else.

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          • H Offline
            H Offline
            hek
            Admin
            wrote on last edited by
            #10

            That seems wrong.

            What if you update the libraries and sketch to latest on github. There was an update to the Onewire/Dallas library recently to make in none-blocking...

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            • Tomasz PazioT Offline
              Tomasz PazioT Offline
              Tomasz Pazio
              wrote on last edited by
              #11

              log is now different
              send: 3-3-0-0 s=255,c=0,t=17,pt=0,l=3,sg=0,st=ok:1.5
              send: 3-3-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,st=ok:0
              read: 0-0-3 s=255,c=3,t=6,pt=0,l=1,sg=0:M
              sensor started, id=3, parent=0, distance=1
              send: 3-3-0-0 s=255,c=3,t=11,pt=0,l=18,sg=0,st=ok:Temperature Sensor
              send: 3-3-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=ok:1.1
              send: 3-3-0-0 s=0,c=0,t=6,pt=0,l=0,sg=0,st=ok:
              send: 3-3-0-0 s=1,c=0,t=6,pt=0,l=0,sg=0,st=ok:

              but still no readings on vera :(

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              • H Offline
                H Offline
                hek
                Admin
                wrote on last edited by
                #12

                I cannot see any temp readings in the debug log...

                Are you powering your 9 Dallas sensors directly from the Arduino or separately? I'm not sure how much they draw but 9 is quite much...

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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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