💬 Air Humidity Sensor - DHT
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@mfalkvidd Indeed, I see that 10 seconds in pdf, but it looks strange. I'd have to re-read to see if I can get what it is supposed to be for.
But, meanwhile, in the same pdf, you get this note (chapter 6): "Note: Sampling period at intervals should be no less than 1 second.". Also, DHT library is using 1second sampling period. -
I've created a DHT11 sensor based on this sketch. However the temperatures (and humidities) are reported as integer numbers in domoticz (either by looking at the devices and setup tabs). In the sketch I've specified the number of decimals like send(msgHum.set(temperatire, 2)). Even if I try larger decimal numbers, nothing change when the value is received in domoticz. What can I do?
Thanks in advance. -
I've created a DHT11 sensor based on this sketch. However the temperatures (and humidities) are reported as integer numbers in domoticz (either by looking at the devices and setup tabs). In the sketch I've specified the number of decimals like send(msgHum.set(temperatire, 2)). Even if I try larger decimal numbers, nothing change when the value is received in domoticz. What can I do?
Thanks in advance. -
@mfalkvidd yes I see only integer numbers here and in devices.
@gohan I've declared the variable temperature as float. However after I bit of debugging I found that it seems to be related to the dht lib included in the mysensors examples. If the model is dht11 the library is set for 0 decimals. For the dht22 it would be 1 decimal.
Am I right? Thanks in advance
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NEWBIE ALERT -- Has anyone else had trouble getting the code above to compile? I'm getting the following error.
ysensors_Humidity:91: error: 'class DHT' has no member named 'setup'
dht.setup(DHT_DATA_PIN); // set data pin of DHT sensor
^
Mysensors_Humidity:92: error: 'class DHT' has no member named 'getMinimumSamplingPeriod'
if (UPDATE_INTERVAL <= dht.getMinimumSamplingPeriod()) {
^
Mysensors_Humidity:97: error: 'class DHT' has no member named 'getMinimumSamplingPeriod'
sleep(dht.getMinimumSamplingPeriod());
^
/Users/scottdube/Documents/Arduino/Mysensors_Humidity/Mysensors_Humidity.ino: In function 'void loop()':
Mysensors_Humidity:104: error: 'class DHT' has no member named 'readSensor'
dht.readSensor(true);
^
Mysensors_Humidity:107: error: 'class DHT' has no member named 'getTemperature'
float temperature = dht.getTemperature();
^
Mysensors_Humidity:114: error: 'class DHT' has no member named 'toFahrenheit'
temperature = dht.toFahrenheit(temperature);
^
Mysensors_Humidity:131: error: 'class DHT' has no member named 'getHumidity'
float humidity = dht.getHumidity();
^
exit status 1
no matching function for call to 'DHT::DHT()'Thanks
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@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; -
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)' -
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.
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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!
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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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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? -
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!
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In a serial debug of the sensor module
It write something like "Failed to read data humidity (temperature)
Also no send any data to gatewayWithout getMinimumSamplingPeriod I've receiving hum & temp through gateway
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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
