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  3. 💬 Air Humidity Sensor - DHT

💬 Air Humidity Sensor - DHT

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  • gohanG gohan

    I guess you are using a different dht library version

    S Offline
    S Offline
    scottdube
    wrote on last edited by
    #125

    @gohan I got it past that point... Now I can't tell what the humidity or temp is? I cannot seem to find where (what file) controls what is being output. See below this is from my serial gateway, I can't figure out what these values represent. :READ,255-255-0,s=36,c=3,t=3,pt=0,l=0,sg=0:
    255;36;3;0;3;

    0;255;3;0;9;0 MCO:BGN:INIT GW,CP=RNNGA---,VER=2.2.0
    0;255;3;0;9;4 TSM:INIT
    0;255;3;0;9;6 TSF:WUR:MS=0
    0;255;3;0;9;14 TSM:INIT:TSP OK
    0;255;3;0;9;17 TSM:INIT:GW MODE
    0;255;3;0;9;20 TSM:READY:ID=0,PAR=0,DIS=0
    0;255;3;0;9;23 MCO:REG:NOT NEEDED
    0;255;3;0;14;Gateway startup complete.
    0;255;0;0;18;2.2.0
    0;255;3;0;9;28 MCO:BGN:STP
    0;255;3;0;9;34 MCO:BGN:INIT OK,TSP=1
    0;255;3;0;9;30224 TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
    0;255;3;0;9;30231 TSF:MSG:BC
    0;255;3;0;9;30233 TSF:MSG:FPAR REQ,ID=255
    0;255;3;0;9;30237 TSF:PNG:SEND,TO=0
    0;255;3;0;9;30240 TSF:CKU:OK
    0;255;3;0;9;30243 TSF:MSG:GWL OK
    0;255;3;0;9;30832 TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
    0;255;3;0;9;32237 TSF:MSG:READ,255-255-0,s=36,c=3,t=3,pt=0,l=0,sg=0:
    255;36;3;0;3;
    0;255;3;0;9;34249 TSF:MSG:READ,255-255-0,s=1,c=3,t=3,pt=0,l=0,sg=0:
    255;1;3;0;3;
    0;255;3;0;9;36260 TSF:MSG:READ,255-255-0,s=220,c=3,t=3,pt=0,l=0,sg=0:
    255;220;3;0;3;
    0;255;3;0;9;38270 TSF:MSG:READ,255-255-0,s=183,c=3,t=3,pt=0,l=0,sg=0:
    255;183;3;0;3;

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    • gohanG Offline
      gohanG Offline
      gohan
      Mod
      wrote on last edited by
      #126

      The is the log parser on the mysensors site. Anyway that means you didn't set a node ID on your node and it is asking for one but there is no controller providing one.

      S 1 Reply Last reply
      0
      • I Offline
        I Offline
        Ihor
        wrote on last edited by
        #127

        I have some problem...

        C:\Users\ibaturin\Desktop\DHT\DHT.ino: In function 'void loop()':

        DHT:104: error: no matching function for call to 'DHT::readSensor(bool)'

        dht.readSensor(true);

                          ^
        

        C:\Users\ibaturin\Desktop\DHT\DHT.ino:104:22: note: candidate is:

        In file included from C:\Users\ibaturin\Desktop\DHT\DHT.ino:44:0:

        C:\ARDUINO\arduino-nightly\portable\sketchbook\libraries\arduino-DHT-master/DHT.h:83:8: note: void DHT::readSensor()

        void readSensor();

            ^
        

        C:\ARDUINO\arduino-nightly\portable\sketchbook\libraries\arduino-DHT-master/DHT.h:83:8: note: candidate expects 0 arguments, 1 provided

        exit status 1
        no matching function for call to 'DHT::readSensor(bool)'

        1 Reply Last reply
        0
        • gohanG Offline
          gohanG Offline
          gohan
          Mod
          wrote on last edited by
          #128

          did you read this?
          https://forum.mysensors.org/topic/4326/can-t-compile-humidity-sketch-2-0-what-dht-library-do-i-need/18

          1 Reply Last reply
          1
          • gohanG gohan

            The is the log parser on the mysensors site. Anyway that means you didn't set a node ID on your node and it is asking for one but there is no controller providing one.

            S Offline
            S Offline
            scottdube
            wrote on last edited by
            #129

            @gohan Thank you I was able to resolve that issue and get it communication with the gateway, the vera and now mqtt. Thanks again!

            1 Reply Last reply
            1
            • joaoabsJ Offline
              joaoabsJ Offline
              joaoabs
              wrote on last edited by
              #130

              For the ones looking for a library that makes this DHT sketch work, mysensors have compiled a set of libraries that include this DHT.h and many others. Just go to https://www.mysensors.org/about/arduino#optional---install-external-mysensors-examples (yes, the name is not intuitive, maybe the keyword library would make it more obvious?), or jump directly to here and follow the standard library instructions. It took me two hours to find this, hope it saves time for future followers of mysensors like myself.

              Good luck!

              1 Reply Last reply
              2
              • joaoabsJ Offline
                joaoabsJ Offline
                joaoabs
                wrote on last edited by
                #131

                Here is the set of libraries where you can find the DHT.h: https://github.com/mysensors/MySensorsArduinoExamples/archive/master.zip

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                0
                • P Offline
                  P Offline
                  Pavel Polititsky
                  wrote on last edited by
                  #132

                  If I use this string in a code "sleep(dht.getMinimumSamplingPeriod());" DHT22 (AM2320) always read NaN
                  else DHT22 working, but never sleeping
                  What im doing wrong?

                  1 Reply Last reply
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                  • joaoabsJ Offline
                    joaoabsJ Offline
                    joaoabs
                    wrote on last edited by
                    #133

                    Where are you reading this "NaN"?
                    I sometimes also have it in my OpenHab controller webpage when the node doesn't communicate for a while... But when it does, it changes to the value it read from the sensor.

                    Try to see in the GW if there is traffic comming from that node. Usualy you can read there the values.

                    Good luck!

                    1 Reply Last reply
                    0
                    • P Offline
                      P Offline
                      Pavel Polititsky
                      wrote on last edited by
                      #134

                      In a serial debug of the sensor module
                      It write something like "Failed to read data humidity (temperature)
                      Also no send any data to gateway

                      Without getMinimumSamplingPeriod I've receiving hum & temp through gateway

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                      • gohanG Offline
                        gohanG Offline
                        gohan
                        Mod
                        wrote on last edited by
                        #135

                        DHT sensor is not very fast, it needs some times between initialization and the different readings

                        1 Reply Last reply
                        0
                        • M Offline
                          M Offline
                          Maschler
                          wrote on last edited by
                          #136

                          Hi
                          this program doesn’t work with my setup. For the Gateway I am using a Ardunio nano as a serial Gateway. Thus, I am using the GatewaySerial.ino. Even the Node is based on an Arduino nano with a DHT22 connected. The general communication between both seems to work. But I do not receive any sensor data. When testing the setup with another library for the dht sensor, it works fine (without sending to the gateway, only serial Monitor). Because I am new in the mysensors community there is perhaps a simple mistake which I don’t see… I hope you can help me finding my mistake.
                          Here is a short extract of the Debugging Information’s. As far as I see there are no data transferred.
                          Gateway:

                          0;255;3;0;9;0 MCO:BGN:INIT GW,CP=RRNGA---,VER=2.3.0
                          0;255;3;0;9;4 TSM:INIT
                          0;255;3;0;9;6 TSF:WUR:MS=0
                          0;255;3;0;9;9 TSM:INIT:TSP OK
                          0;255;3;0;9;12 TSM:INIT:GW MODE
                          0;255;3;0;9;15 TSM:READY:ID=0,PAR=0,DIS=0
                          0;255;3;0;9;19 MCO:REG:NOT NEEDED
                          0;255;3;0;14;Gateway startup complete.
                          0;255;0;0;18;2.3.0
                          0;255;3;0;9;23 MCO:BGN:STP
                          0;255;3;0;9;29 MCO:BGN:INIT OK,TSP=1
                          0;255;3;0;9;1907 TSF:MSG:READ,255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
                          0;255;3;0;9;1913 TSF:MSG:BC
                          0;255;3;0;9;1916 TSF:MSG:FPAR REQ,ID=255
                          0;255;3;0;9;1920 TSF:CKU:OK,FCTRL
                          0;255;3;0;9;1923 TSF:MSG:GWL OK
                          0;255;3;0;9;4047 TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=8,pt=1,l=1,sg=0,ft=0,st=OK:0
                          0;255;3;0;9;5136 TSF:MSG:READ,255-255-0,s=187,c=3,t=3,pt=0,l=0,sg=0:
                          255;187;3;0;3;
                          0;255;3;0;9;7150 TSF:MSG:READ,255-255-0,s=155,c=3,t=3,pt=0,l=0,sg=0:
                          255;155;3;0;3;
                          0;255;3;0;9;9164 TSF:MSG:READ,255-255-0,s=123,c=3,t=3,pt=0,l=0,sg=0:
                          255;123;3;0;3;
                          0;255;3;0;9;11179 TSF:MSG:READ,255-255-0,s=91,c=3,t=3,pt=0,l=0,sg=0:
                          255;91;3;0;3;
                          Sensor:
                          16 MCO:BGN:INIT NODE,CP=RRNNA---,VER=2.3.0
                          25 TSM:INIT
                          26 TSF:WUR:MS=0
                          29 TSM:INIT:TSP OK
                          30 TSM:FPAR
                          1250 TSF:MSG:SEND,255-255-255-255,s=255,c=3,t=7,pt=0,l=0,sg=0,ft=0,st=OK:
                          1368 TSF:MSG:READ,0-0-255,s=255,c=3,t=8,pt=1,l=1,sg=0:0
                          1373 TSF:MSG:FPAR OK,ID=0,D=1
                          1571 TSF:MSG:READ,0-0-255,s=255,c=3,t=8,pt=1,l=1,sg=0:0
                          1774 TSF:MSG:READ,0-0-255,s=255,c=3,t=8,pt=1,l=1,sg=0:0
                          1977 TSF:MSG:READ,0-0-255,s=255,c=3,t=8,pt=1,l=1,sg=0:0
                          3257 TSM:FPAR:OK
                          3258 TSM:ID
                          3259 TSM:ID:REQ
                          3267 TSF:MSG:SEND,255-255-0-0,s=187,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
                          5274 TSM:ID
                          5275 TSM:ID:REQ
                          5283 TSF:MSG:SEND,255-255-0-0,s=155,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
                          7290 TSM:ID
                          7291 TSM:ID:REQ
                          7299 TSF:MSG:SEND,255-255-0-0,s=123,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
                          9306 TSM:ID
                          9307 TSM:ID:REQ
                          9315 TSF:MSG:SEND,255-255-0-0,s=91,c=3,t=3,pt=0,l=0,sg=0,ft=0,st=OK:
                          11322 !TSM:ID:FAIL
                          11323 TSM:FAIL:CNT=1
                          11325 TSM:FAIL:DIS
                          11327 TSF:TDI:TSL
                          21330 TSM:FAIL:RE-INIT
                          21332 TSM:INIT
                          21335 TSM:INIT:TSP OK
                          21337 TSM:FPAR

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                          • bgunnarbB Offline
                            bgunnarbB Offline
                            bgunnarb
                            wrote on last edited by
                            #137

                            Hi!
                            What controller are you using?
                            From the logs it seems that the sensor is asking for an ID but does not get any.
                            Node ID is handed out by the controller. Or else you have to set the node ID in the sketch. What does the sketch look like?

                            I have never been so busy since I retired!

                            1 Reply Last reply
                            0
                            • M Offline
                              M Offline
                              Maschler
                              wrote on last edited by
                              #138

                              Hi
                              thanks for reply. I am using this sketch: https://github.com/mysensors/MySensors/blob/development/examples/GatewaySerial/GatewaySerial.ino
                              The only thing I changed is the radio type and I disabled the inclusion mode.

                              1 Reply Last reply
                              0
                              • bgunnarbB Offline
                                bgunnarbB Offline
                                bgunnarb
                                wrote on last edited by
                                #139

                                Yes but the issue is with the sensor node. What sketch are you using there?

                                I have never been so busy since I retired!

                                1 Reply Last reply
                                0
                                • M Offline
                                  M Offline
                                  Maschler
                                  wrote on last edited by
                                  #140

                                  Oh. I am using the sketch in from above and only changed the radio module.

                                  1 Reply Last reply
                                  0
                                  • M Offline
                                    M Offline
                                    Maschler
                                    wrote on last edited by
                                    #141

                                    @bgunnarb
                                    You are right. I had to define a sensor id and now it works perfectly :) Thank you very much!

                                    1 Reply Last reply
                                    0
                                    • R Offline
                                      R Offline
                                      roachgf85
                                      wrote on last edited by
                                      #142

                                      Note: Double check your DHT11 module! The pinouts of the PCB of my DHT11 module differed from those in this article. My leftmost pin was Data out, the middle pin was VCC and the right was GND.

                                      1 Reply Last reply
                                      0
                                      • cneroneC Offline
                                        cneroneC Offline
                                        cnerone
                                        wrote on last edited by
                                        #143

                                        Hi all,
                                        I recoded this sketch and I posted on GitHub (1 year ago, and I updated it today). It runs good from 1 year with no issues.
                                        I don't know why it's still not merged in master branch. I forgot to do some action??
                                        Can anyone help me? please.
                                        Meanwhile you can download and use it; this is its link:
                                        https://github.com/cnerone/MySensorsArduinoExamples/blob/master/examples/DhtTemperatureAndHumiditySensor/DhtTemperatureAndHumiditySensor.ino

                                        mfalkviddM 1 Reply Last reply
                                        1
                                        • cneroneC cnerone

                                          Hi all,
                                          I recoded this sketch and I posted on GitHub (1 year ago, and I updated it today). It runs good from 1 year with no issues.
                                          I don't know why it's still not merged in master branch. I forgot to do some action??
                                          Can anyone help me? please.
                                          Meanwhile you can download and use it; this is its link:
                                          https://github.com/cnerone/MySensorsArduinoExamples/blob/master/examples/DhtTemperatureAndHumiditySensor/DhtTemperatureAndHumiditySensor.ino

                                          mfalkviddM Offline
                                          mfalkviddM Offline
                                          mfalkvidd
                                          Mod
                                          wrote on last edited by
                                          #144

                                          @cnerone no you did 't forget anything. It is just that the external examples don't get much attention and are a bit truoublesome (due to the need of handling third party libraries).

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