[Question] Error trying to verify UberSensor Sketch

[KartRacer]

I am getting this error when trying to verify the UberSensor sketch before I upload it to the Arduino.

Arduino: 1.0.6 (Windows 7), Board: "Arduino Uno"

C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=106 -IC:\Program Files\Arduino\hardware\arduino\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\variants\standard -IC:\Program Files\Arduino\libraries\RFM69 -IC:\Program Files\Arduino\libraries\SPI -IC:\Program Files\Arduino\libraries\DHT C:\Users\Scott\AppData\Local\Temp\build7504179925801519978.tmp\UberSensor.cpp -o C:\Users\Scott\AppData\Local\Temp\build7504179925801519978.tmp\UberSensor.cpp.o


UberSensor:75: error: 'DHT11' was not declared in this scope

UberSensor.ino: In function 'void setup()':

UberSensor:141: error: 'class DHT' has no member named 'begin'

UberSensor.ino: In function 'void loop()':

UberSensor:354: error: 'class DHT' has no member named 'readHumidity'

UberSensor:356: error: 'class DHT' has no member named 'readTemperature'

UberSensor:358: error: 'class DHT' has no member named 'readTemperature'

I was able to get the Ethernet Gateway sketch upload, but can't seem to find a DHT Library that works.

[kylix]

You need to load the DHT library.

[KartRacer]

Feb 1, 2015 21:19:03 GMT kylix said:

You need to load the DHT library.

I have tried a couple different DHT Librarys with no luck. Any Idea which DHT Library to use.

I am installing them in: Arduino/libraries/DHT  

[Kylix_not_logged]

Do you have the .cpp and the .h files inside the DHT library folder?

[camblonie]

Kart,
Are you renaming / moving the folder once you expand it in the library folder. Most times you need to remove "-master" in the name but you may also need to pull the files up one level in the structure.

[kartracer]

Feb 2, 2015 16:43:01 GMT camblonie said:

Kart,
Are you renaming / moving the folder once you expand it in the library folder. Most times you need to remove "-master" in the name but you may also need to pull the files up one level in the structure.

I did rename it, I put the DHT.cpp, DHT.h files in this directory: c:/Program Files/Arduino/libraries/DHT



I have tried a couple of different DHT libraries with no luck. I am stumped.

[camblonie]

I think that's the wrong location. Look for an arduino folder under c:/users/username/...
I'm not by my computer to check but that's the general area.

[kartracer]

Feb 2, 2015 18:43:18 GMT camblonie said:

I think that's the wrong location. Look for an arduino folder under c:/users/username/...
I'm not by my computer to check but that's the general area.

I don't have any thing related to Arduino in C:/users/username/...
I have added other libraries to c:/program files/arduino/libraries  and they have worked fine, just not the DHT library. 

[mothpaul]

Greetings,

I too am having trouble with an Arduio Sketch. I modified the UberSensor Sketch for just a PIR sensor and an DHT22 Temperature Sensor. Every time the Node updates the Temperature/Humidity, it also sends a notice that the PIR sensor has detected motion. If someone could tell me where to look for this error in my sketch, it would be appriciated.

void loop()
{
unsigned long time_passed = 0;
//===================================================================
//device #3
//PIR
PIR_reading = digitalRead(PirInput);
if ((PIR_reading == 1) && ( ((millis() - pir_time)>60000)||( (millis() - pir_time)< 0)) )
{
pir_time = millis();
theData.deviceID = 3;
theData.var1_usl = millis();
theData.var2_float = 1111.;
theData.var3_float = 1112.; //null value;
radio.sendWithRetry(GATEWAYID, (const void*)(&theData), sizeof(theData));
delay(2000);
}
//===================================================================
//device #2
//temperature / humidity
time_passed = millis() - temperature_time;
if (time_passed < 0)
{
temperature_time = millis();
}
if (time_passed > 360000)
{
float h = dht.readHumidity();
float t = dht.readTemperature();
float f = dht.readTemperature(true);

// Check if any reads failed and exit early (to try again).
if (isnan(h) || isnan(t) || isnan(f))
{
Serial.println("Failed to read from DHT sensor!");
return;
}
temperature_time = millis();
//send data
theData.deviceID = 2;
theData.var1_usl = millis();
theData.var2_float = f;
theData.var3_float = h;
radio.sendWithRetry(GATEWAYID, (const void*)(&theData), sizeof(theData));
delay(1000);
} // end Device #2
}//end loop

[Liam]

Hey mothpaul. Sorry I cannot help identify the exact problem but what I can say is I have the exact same setup and I have also modified the code as above for just PIR and temp and I do not have the same problem. The only difference I can see is that I have kept the original device ID's as per the untouched code.

[mothpaul]

Mar 18, 2015 9:29:18 GMT Liam said:

Hey mothpaul. Sorry I cannot help identify the exact problem but what I can say is I have the exact same setup and I have also modified the code as above for just PIR and temp and I do not have the same problem. The only difference I can see is that I have kept the original device ID's as per the untouched code.

I posted only the Void Loop part of the Sketch because I din't think there would be a problem elsewhere. Could you share what you are using.  Perhaps it would work for me too. Thanks 

[mothpaul]

ALCON,

Please disregard. I have sensors working now. I believe my error was that I changed the frequency that the Temperature Sensor was sending a reading for my testing purposes (i.e., from 6 minutes to 1 minute in the 'if time passed' line). I changed it back and it works now.

Thank you