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  1. Home
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  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
    #5

    Today after vera update I do not have any readings from temp.sensors on onewire eaven one...
    when using "generic " example for arduino all sensors are reported.
    Something wrong with this example :(

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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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      • 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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