Comments on: ESP8266 Weather Station: Measuring Inside and Outside Temperature – Part 2

By: stamy1

stamy1 — Sun, 17 Mar 2019 08:52:45 +0000

i have two questions. 1. Can be use the ESP8266-01 for indoor and outdoor modules? and 2. it is possible to connect this ESP modules without an internet services like Thingspeak , blynk or other?

By: ronald mallett

ronald mallett — Fri, 01 Feb 2019 19:26:21 +0000

Is it difficult to allow others (sailing club) to see the readings on a web page (or thingspeak)

weather station -> repeater -> accesspoint -> thingspeak -> all club members have access to readings?

Also have you seen the new boards that have cameras on,?, maybe take it to the next level

Good tutorial and easy to follow

By: Lev

Lev — Fri, 21 Sep 2018 12:59:08 +0000

Amazing project, thanks!!!

By: Thom

Thom — Sun, 28 Jan 2018 20:43:07 +0000

I’m getting the same error.

By: Steve Cappello

Steve Cappello — Sun, 07 Jan 2018 05:34:18 +0000

I can not seem to get the “Climate Mode” sketch to compile. The last error is as follows:

Arduino: 1.8.3 (Windows 10), Board: “NodeMCU 1.0 (ESP-12E Module), 80 MHz, 4M (1M SPIFFS), v2 Prebuilt (MSS=536), Disabled, None, 115200”

Archiving built core (caching) in: C:\Users\steve\AppData\Local\Temp\arduino_cache_96152\core\core_esp8266_esp8266_nodemcuv2_CpuFrequency_80,FlashSize_4M1M,LwIPVariant_v2mss536,Debug_Disabled,DebugLevel_None____,UploadSpeed_115200_f8c65c991b2173c0d637a69a82742b0e.a
libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::DHT(unsigned char, unsigned char, unsigned char)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:12: multiple definition of `DHT::DHT(unsigned char, unsigned char, unsigned char)’

sketch\DHT.cpp.o:sketch/DHT.cpp:12: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::DHT(unsigned char, unsigned char, unsigned char)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:12: multiple definition of `DHT::DHT(unsigned char, unsigned char, unsigned char)’

sketch\DHT.cpp.o:sketch/DHT.cpp:12: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::begin()’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:24: multiple definition of `DHT::begin()’

sketch\DHT.cpp.o:sketch/DHT.cpp:24: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::readHumidity(bool)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:64: multiple definition of `DHT::convertCtoF(float)’

sketch\DHT.cpp.o:sketch/DHT.cpp:64: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::convertCtoF(float)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:69: multiple definition of `DHT::convertFtoC(float)’

sketch\DHT.cpp.o:sketch/DHT.cpp:69: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::computeHeatIndex(float, float, bool)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:92: multiple definition of `DHT::computeHeatIndex(float, float, bool)’

sketch\DHT.cpp.o:sketch/DHT.cpp:92: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::expectPulse(bool)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:237: multiple definition of `DHT::expectPulse(bool)’

sketch\DHT.cpp.o:sketch/DHT.cpp:237: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::read(bool)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:123: multiple definition of `DHT::read(bool)’

sketch\DHT.cpp.o:sketch/DHT.cpp:123: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::readTemperature(bool, bool)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:35: multiple definition of `DHT::readTemperature(bool, bool)’

sketch\DHT.cpp.o:sketch/DHT.cpp:35: first defined here

libraries\DHT_sensor_library\DHT.cpp.o: In function `DHT::readHumidity(bool)’:

C:\Users\steve\Documents\Arduino\libraries\DHT_sensor_library/DHT.cpp:72: multiple definition of `DHT::readHumidity(bool)’

sketch\DHT.cpp.o:sketch/DHT.cpp:72: first defined here

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board NodeMCU 1.0 (ESP-12E Module).

This report would have more information with

“Show verbose output during compilation”
option enabled in File -> Preferences.

I suspect I do not have files in the correct directories. Any help is most appreciated!! Thanks.

By: Dimitar Kolev

Dimitar Kolev — Fri, 22 Sep 2017 09:55:36 +0000

Now consider adding particle counter (PM2.5/PM10) for inside and outside, as well as NO2(outside) and CO2(inside), as well as noise meter (dB meter). Additionally new BMP680 will be a good choice for inside application into air quality measurements. BME280 and BME680 has two I2C addresses, or can be separate controlled by SPI – so there you go – one for inside, one for outside.

By: Tim Ker

Tim Ker — Mon, 03 Oct 2016 10:29:36 +0000

Got the Thingspeak uploads working. I’m now considering swapping the DHT sensor for an SHT11. Is it acceptable to share the I2C for the display and if so can I get away with a Wire.beginTransmission(eSHT2xAddress); in the main code assuming that the display code has already initialised the pins?

By: archana sahu

archana sahu — Sun, 25 Sep 2016 16:01:17 +0000

hey i have one doubt ..if i am using weather station demo example by using nodemcu and oled only then will i get graphs on thingspeak channels or its neccessary that i should connect one dht sensor with it…if it is possible then plzz let me know coz i have tried alot but i am not getting it..
thanks in advance

By: squix78

squix78 — Mon, 25 Jul 2016 18:10:41 +0000

In reply to Tim Kerby.

Hi Tim. Basically yes, that should be no problem at all. I was just more interested on the outside temperature while watching the data indoors. The current scheduling is quite simple. Just make sure that the time intensive things don’t happen while you are animating the display or the carousel won’t so smooth anymore. You can check in which state the carousel currently is and only execute when the frames are not moving. If you want to do “background” tasks don’t execute them without such a check. I also wouldn’t execute it during the clock frame, since the seconds might “jump” a lot… If you need more speed, you can also switch to the BRZO version of the I2C driver. This driver is written in assembler and is a lot faster than the built-in I2C driver…

By: Tim Kerby

Tim Kerby — Mon, 25 Jul 2016 14:25:56 +0000

Have you considered both displaying the data locally using the weather station code and uploading to Thingspeak? That way I can see my home temperature from the office or office temperature from home without too many additional esp8266 boards. I’d be interested in some information on how your scheduling works and how much time is available in the main loop. I presume its the display driver that takes the most time