Blynk ESP8266 DHT11 Temperature Sensor

[@mgjr009]

Great tutorial! Had trouble with my ESP8266 not compiling. Turned out to be the SimpleTimer Library, here's how I learned to fix it: // Remove this //#include ... // Modify this //SimpleTimer timer; // into this BlynkTimer timer; Hope this helps anyone with this error. Thanks again!

[@AngerMike]

You are my hero!

[@mgjr009]

@@AngerMike Glad it helped you out!

[@u4405672]

Excellent goodman

[@TheCarbonburner]

Thanks, yes this worked for me as well!

[@Gaber820]

thanks

[@woodywood1951]

one of the few videos that lead to an application that works immediately. Good job! Thanks for your time!

[@taavikoppel1769]

I copied everything but with a DHT22 sensor. Changed the line to use DHTTYPE DHT22. In the serial monitor I get "Failed to read from DHT sensor" Any ideas where I should look for the error? EDIT: Found the error. The code says DHTPIN 2 but the comment says PIN 4. And the diagram also indicates to PIN 4. It was actually using PIN2. The Blynk app is also updating now. Fantastic!

[@mlggeek1812]

Ty for the edit!

[@lucaslobatovilazante9632]

hi man, so did you solve the problem?

[@joaomendes4049]

I already checked this but it remains the same. Did you do anything else?

[@metinplayer1999]

From where can i find the esp8266wifi.h lib ?

[@rustydusty3715]

your code not working.plz help. exit status 1 Error compiling for board NodeMCU 1.0 (ESP-12E Module).

[@PêcheOuCapot]

Don't forget to install blynk library manually.

[@AdibRL]

@@PêcheOuCapot still doesnt work

[@asmodeus_gaming069]

sir on which software were you doing this circuit diagram? Can you suggest some names where I can do circuit connections and upload codes for demo before on-hand iot for practice.

[@davidjamesrayverviado2407]

Hey viral science! I just want to Ask if what ZIP files do you need to make that? do you need to insert zip folders or no?

[@HamzaHajeir]

Neat ! But how was the humidity 95% ? what was wrong ?

[@cranexdragon1046]

Most likely not. Depending on the location if this was an outdoor garage or workspace that wouldnt be otherwise heated the humidity can easily jump if there is a slight decrease in temp.

[@ManuelCastillo-kq3xy]

No code, No circuit. Both links are droped. Please, can I reload?

[@amalanathannathan5058]

same here.....pls help i need it

[@gunjanshorts1]

Send linksss

[@ogdarthv5943]

same here

[@jlaroche0]

Yup. No code & no circuit == supreme waste of time.

[@carversi]

Here you have the code URL: www.viralsciencecreativity.com/tutorials/blynk-esp8266-dht11-temperature-sensor

[@attiliovolpe4140]

No code no circuit, please send new link

[@brandlygaming498]

Can you add a fan to act like a cooler on this project??

[@uwestraube3765]

Good evening, I have rebuilt the sensor and works very well with the DHT11. But I want to make a sketch suggestion. A relay should be switched on at a certain temperature and switched off again at a low temperature. That would be great. 2 additional buttons in the Blynk app for on / off would be great. Can you help me with the sketch? Thank you

[@toddfogleman]

thanks! now that i got down one sensor per project, how about two sensors or more in one project?

[@maherriyadh5647]

what is the name of that simulator app you use to draw ?

[@stevemorse5052]

In case you didn't find out, the program he used was Fritzing

[@fahmywaleed]

Thanks for the Video. I am having an issue where I used the DHT11 sensor with Arduino Mega and the reading was very accurate compared with another AC controller and sensor that I bought from the store. But when I used the same sensor with ESP8266 the temp reading was accurate but the humidity was off by 5 to 10% which I found very odd. Any idea why is the difference, are you using the same dht11 library with Arduino and ESP8266. Also is there a way to read the fraction temp and humidity or it has to be full integer?

[@heisy5651]

I don’t understand, the esp can create a wifi access and i have to connect ? Or esp can just connect to a network ?

[@oszi4399]

Good video! your cellphone is nice! unfortunately the program has been set up at 50 times the speed so the whole thing is useless. Maybe a step-by-step write-up would help ... I'll be successful next time, or else it's not your desk!

[@nikhithatalasila]

Can I get the connection which you made from nodemcu to sensor it is difficult to see in video

[@giovanipellin3384]

So, I have a question. Will it hold the results in a spreedsheet of some sort?

[@vividh1578]

bro what all equipments do u use for making these videos e.g. camera ,mike etc.. and which editor do u use????

[@prooosty]

Please name of program where you draw this project

[@dayannemontalvo7212]

hola! una pregunta y si quisiera conectar un sensor de humedad de suelo seria así como tu ejemplo?

[@alakondakrishnareddy1705]

Can we do the same for smoke sensor.

[@azimnajimi7442]

can i use the coding but using esp32?

[@А.Забиров]

Good day! I have a problem. :-) I have an error - Simple Timer.h. There is no such file or directory

[@raj11ization]

What is the range to which data can be sent. Like 5 km etc

[@qbslayer7297]

All over the world just need internet connectivity

[@TIKOSCREAM]

Nice video but why a Virtual Pin rather than a regular Analog Pin?

[@milslion863]

hi. i will like to add SuperChart of blynk. Please can you tell me what change in the code??? thanks!

[@PULSTARUnboxing]

how you do this but print result with a web server?

[@abrahamherzog7493]

I have a problem and I can't not connect my nodemcu to Arduino environment and I have all the plugins! why isn't connect? can you please help me? And thank you very much for your really good good videos I really do appreciate!!

[@raymondmphaphathe7053]

Hi, don't you know how can I link this kind of project with my system so that I can also monitor the temperature through the system I've developed. Not using blynk or any other app?

[@lakshmanbirapuneni225]

What is that website you are using for circuit making???

[@walter-vq1fw]

Hey, im not sure how likely you are to respond to this, but what power source do you use to power it without connecting it to the computer? Im a noob so i need to ask

[@sohilaabdo8658]

what about making a connection between ESP8266 with DHT11, MQ2 Smoke Sensor can you make a video explaining it

[@nikhilajyothipenta9391]

can we connect sound sensor ,dht sensor ,flame sensor ,ultrasonic sensor to one nodemcu and send notification to blynk?

[@anasmmcochin]

For that u need to use esp 32... not esp 8266... any doubt u can mail me. [e-mail]

[@zolution2839]

Greetings, I can not make it work, I've tried everything and it's fine, but the reading does not come in the blynk application, you have to recharge it with money to enable this function? Thank you

[@amirasyraf5720]

Can someone tell me.. is this project in IoT project category????

[@jeremytiempo9639]

"Failed to read from DHT sensor! " itried ur code but always failed in node mcu but when i tried to arduino uno it functional pls help

[@valentinrymaszewski6574]

Help, Read failFailed to read from DHT sensor!

[@ReginaSamosir]

Hey, can I use Espruino IDE rather than Arduino IDE?

[@vuuc5336]

Let me ask, how about adding an LCD display?

[@cedriccuny2687]

kzbin.info/www/bejne/fWHEn2eMj76cZ5o there is a video who is a diagram with no-I2C display. with I2C display it's more easy :) you can find all informations about that on internet :)

[@amigueta92]

how does the esp8266 communicate with the app? through the wifi or internet? i mean...do they have to be in the same wifi network to receive the temperature?

[@ViralScience]

Its is communicating through Internet You can control it from anywhere No need to be on same wifi network

[@leonardoavendano6031]

Viral Science - The home of Creativity for free?

[@manojkumar-we6me]

how to download library file for simple timer?

[@hamzasajid3773]

plz let me know im facing same issue

[@marewansabir5192]

what is the available distance

[@mohdshahrimiemohdasaari5145]

Hi anyone has idea why my reading on blynk appears 255 for both temp and humidity? something needs to do with timer?

[@laishramguneshwor3137]

i think.. aapne pin 4 me connect kiya hai.. aur declaration pin 5, 6 me kiya hai .. sahi hai kya?

[@kevinpita1421]

Se puede hacer esto con elsensor de Temp. Corporal el Mlx90614

[@ThuanDuong-pv3xu]

to: Viral Science ; Please tell me may be get data or control Node Mcu ESP8266 from a smartwatch (DZ09 chiness smart watch) (Wifi) ?

[@codyblaze5535]

Can someone please help me it says "expected primary-expression before '.' token" on the "Float t = dht.readTempurature()" And I don't know what to do to fix it so please help me

[@MARS-GREENH0USE]

this is a devic you have to get the app for. the code is here but doesnt work either way. BASICALLY THIS IS A QUICK WAY TO PROMOTE THE APP WHICH CHARGES YOU TO ADD YOUR BUTTONS AND FEATURES TO YOUR DOODAD. , ID PAY IT BUT THIS IS A RUN AROUND. [ON TOP COMMENT]- THOSE 7 COMMENTS ARE FAKE COMPLIMENTS.

[@jjawads88]

how we can add ds3231 instead of dht11

[@CharaAspera]

can the barometer be added? do you have the code?

[@akhilkumarkar9112]

how to download esp libraries and dht

[@MrSaravananSMKKB]

Through library manager bro. for DHT just type DHT and youll see see a library called "DHT sensor library". Install that and you should be good to go. For ESP library kzbin.info/www/bejne/iIe2dJ15pb-SpLM This was slow to install so i use VPN to USA and it installed much faster. The DHT library no need VPN as it will install very fast.

[@amirasyraf5720]

Hi, i want to ask all of you guys.. is this project counted as IoT project?? I need to know it because i need to create Iot Project for my course

[@ec_vlog]

Do you have tutorial for acs712 sensor blynk display?

[@BakhtiyarBaizulla]

where can i download the libraries?

[@zolution2839]

I do not know if all but it happens to me that it does not show the data of temperature and humidity in the application blink being all done well, if it is your case write me and I post a posile solution, greetings.

[@nikhilajyothipenta9391]

can we do the same with sound sensor?

[@anasmmcochin]

Yes

[@ganeshvarma3675]

Can u tell me the simulation u used

[@divyanshsao9380]

How to make this using mlx90614

[@JATM1204]

Help, I have this error: 'DHT dht' previously declared here In this line: DHT dht(DHTPIN, DHTTYPE); Help Please

[@e.s.6605]

Im receiving this error and I dont know how to fix it: In file included from C:\Users\*****\OneDrive\Documents\Arduino\DHT11nodemcu\DHT11nodemcu.ino:34:0: BlynkSimpleEsp8266.h:18:21: error: version.h: No such file or directory #include

[@mr.perfect4476]

Plz make a video on uploding problems of ESP 01 WiFi module

[@user-fo9ce3hr5h]

How far can the cell phone or blnynk app can see the temperature?

[@NeoPh03nix-lk8fc]

anywhere on the world

[@adityadubey9859]

can we use 2-3 separate sensor on single esp8266?

[@anasmmcochin]

Nope.. only one analog sensor in esp 8266

[@Gameplayer55055]

Also you can use mqtt and adafruit.io Then you can make control with google assistant Ifttt

[@akashkushwah9654]

bro how to fix hard resetting rts pin problem

[@tranvietlan8832]

This code can use with esp32 ???

[@Kot-Begemot-007]

not working: exit status 1 Error compiling for board NodeMCU 1.0 (ESP-12E Module)

[@MrSaravananSMKKB]

check if you have multiple libraries of the same DHT sensor

[@DimitrijeMilenkovic86]

exit status 1 'DHT11' was not declared in this scope

[@MrSaravananSMKKB]

Go under Library Manager, type DHT and enter You should see a library called "DHT sensor library". Install that and you should be good to go. Not resolved, let me know bro

[@sandeepmanjarekar3708]

There we got for 10 / 10 for my new project

[@digxijay.r]

There is no option of board of node MCU in tools->board Please help me fix it

[@close2yah]

Install esp8266 core i believe thats the library

[@muhamadsyafiq4998]

cant with lcd i2c?

[@abdulrahimanrahman3629]

very nice bro. how much an arduino uno and nano costs bro?

[@remixnationph5483]

Arduino: 1.8.12 (Windows 10), Board: "NodeMCU 1.0 (ESP-12E Module), 80 MHz, Flash, Legacy (new can return nullptr), All SSL ciphers (most compatible), 4MB (FS:2MB OTA:~1019KB), 2, v2 Lower Memory, Disabled, None, Only Sketch, 115200" Project-1:34:32: fatal error: BlynkSimpleEsp8266.h: No such file or directory #include ^ compilation terminated. exit status 1 BlynkSimpleEsp8266.h: No such file or directory This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

[@MARS-GREENH0USE]

same here WHAT IS THE DEAL HERE, THEFILE EXISTS

[@onkarbatra9884]

Same

[@HoaTran-nr7iq]

i don't see the link ....

[@tiodolanche3945]

Esse app gera o código ou você fez?

[@billparker9295]

Have you removed the code? I can not download it.

[@saivenkatesh4730]

Program got uploaded but wifi not getting connected ..what is the problem

[@jocycylynn9612]

can any type of NodeMcu ESP8266 used this tutorial??

[@maxgroen2467]

I am not an expert, but I think as long as you select the correct device you should be fine

[@michi_8756]

What is the app name

[@vijaykoparde1275]

links are not opening.

[@joekmj]

Nice project, but i can't stop thingking to pay $166/ each month, is it worth?

[@luisavila8421]

hello I need some help with this problem Error Message Arduino: 1.8.8 (Mac OS X), Board: "NodeMCU 0.9 (ESP-12 Module), 80 MHz, Flash, Enabled, 4M (no SPIFFS), v2 Lower Memory, Disabled, None, Only Sketch, 115200" In file included from /Users/avila/Documents/Arduino/libraries/DHT-sensor-library-master/DHT_U.cpp:22:0: /Users/avila/Documents/Arduino/libraries/DHT-sensor-library-master/DHT_U.h:25:29: fatal error: Adafruit_Sensor.h: No such file or directory #include ^ compilation terminated. exit status 1 Error compiling for board NodeMCU 0.9 (ESP-12 Module). This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences. my code #include //Viral science kzbin.info //Temperature sensor /************************************************************** * Blynk is a platform with iOS and Android apps to control * Arduino, Raspberry Pi and the likes over the Internet. * You can easily build graphic interfaces for all your * projects by simply dragging and dropping widgets. * * Downloads, docs, tutorials: www.blynk.cc * Blynk community: community.blynk.cc * Social networks: www.fb.com/blynkapp * twitter.com/blynk_app * * Blynk library is licensed under MIT license * This example code is in public domain. * ************************************************************** * This example shows how value can be pushed from Arduino to * the Blynk App. * * WARNING : * For this example you'll need SimpleTimer library: * github.com/jfturcot/SimpleTimer * and Adafruit DHT sensor library: * github.com/adafruit/DHT-sensor-library * * App project setup: * Value Display widget attached to V5 * Value Display widget attached to V6 * **************************************************************/ #define BLYNK_PRINT Serial // Comment this out to disable prints and save space #include #include #include #include #include // You should get Auth Token in the Blynk App. // Go to the Project Settings (nut icon). char auth[] = "e320b7b68bf24519aabdb7a726"; //Enter the Auth code which was send by Blink // Your WiFi credentials. // Set password to "" for open networks. char ssid[] = "E5D0_5=G"; //Enter your WIFI Name char pass[] = "21632"; //Enter your WIFI Password #define DHTPIN 2 // Digital pin 4 // Uncomment whatever type you're using! #define DHTTYPE DHT11 // DHT 11 //#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321 //#define DHTTYPE DHT21 // DHT 21, AM2301 DHT dht(DHTPIN, DHTTYPE); SimpleTimer timer; // This function sends Arduino's up time every second to Virtual Pin (5). // In the app, Widget's reading frequency should be set to PUSH. This means // that you define how often to send data to Blynk App. void sendSensor() { float h = dht.readHumidity(); float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit if (isnan(h) || isnan(t)) { Serial.println("Failed to read from DHT sensor!"); return; } // You can send any value at any time. // Please don't send more that 10 values per second. Blynk.virtualWrite(V5, h); //V5 is for Humidity Blynk.virtualWrite(V6, t); //V6 is for Temperature } void setup() { Serial.begin(9600); // See the connection status in Serial Monitor Blynk.begin(auth, ssid, pass); dht.begin(); // Setup a function to be called every second timer.setInterval(1000L, sendSensor); } void loop() { Blynk.run(); // Initiates Blynk timer.run(); // Initiates SimpleTimer }

[@luisavila8421]

update after 16 mins with the dht22 sensor library problem I found a solution WARNING : For this example you'll need Adafruit DHT sensor libraries: you need to install both github.com/adafruit/Adafruit_Sensor github.com/adafruit/DHT-sensor-library

[@tanish991]

What is the solution for fatal error?

Hi, there, that is lovely video. It is really clearly explained. Thumps up! ;) May I have a question.. What is the name of the editor that you use for simulation of the el. circuit. Looks intuitive and easy to use. Thanks a lot.

[@tims246]

It's called fritzing

[@mukul04sk]

Can you please add another link for the source code and circuit.. The one above is not working.. Thanks!

[@ViralScience]

Visit my website www.viralsciencecreativity.com for codes and circuit diagrams

[@pratikyadav371]

Bro error Saying Leaving Hard resetting via RTS PIN

[@anhkietnguyenbui2200]

Name of the music in this video please.

[@satyakisaha2704]

the coding is not compiling and a error is coming that an error compiling in nodemce 1.0

[@GamingChannel-wr7fv]

blynk app not working .please send me blynk old version

[@mesample1705]

I am disappointed. You probably have useful knowledge to share, but you need to devote more than 3:50 to do a good job.

[@wilsonportillo9894]

me sale error me pide libreria simple timer

[@mgomes32]

CODE not found....404 error

[@eemhisolutions9287]

no circuit diagram

[@eleccafe98]

hey guys after few seconds app disconnect anyone can help me?

[@MrAcil-me5fg]

Hello link code broken

[@adityataksande5024]

Can't find code sir can plzz resend it

[@jmickbr]

Kd o circuito? refaça o link!

[@metallicdude100]

Hi Viral Science! I'm trying to make this project work , but, although I did everything as instructed in your video, and installed the libraries and drivers needed, I still get the "exit status 1 Error compiling for board NodeMCU 1.0 (ESP-12E Module)." error while compliling the program. Can you please help? Here is the code I'm tryin to upload: #define BLYNK_PRINT Serial // Comment this out to disable prints and save space #include #include #include #include #include // You should get Auth Token in the Blynk App. // Go to the Project Settings (nut icon). char auth[] = "mycode"; //Enter the Auth code which was send by Blink // Your WiFi credentials. // Set password to "" for open networks. char ssid[] = "myname"; //Enter your WIFI Name char pass[] = "mypassword"; //Enter your WIFI Password #define DHTPIN 2 // Digital pin 4 // Uncomment whatever type you're using! #define DHTTYPE DHT11 // DHT 11 //#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321 //#define DHTTYPE DHT21 // DHT 21, AM2301 DHT dht(DHTPIN, DHTTYPE); SimpleTimer timer; // This function sends Arduino's up time every second to Virtual Pin (5). // In the app, Widget's reading frequency should be set to PUSH. This means // that you define how often to send data to Blynk App. void sendSensor() { float h = dht.readHumidity(); float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit if (isnan(h) || isnan(t)) { Serial.println("Failed to read from DHT sensor!"); return; } // You can send any value at any time. // Please don't send more that 10 values per second. Blynk.virtualWrite(V5, h); //V5 is for Humidity Blynk.virtualWrite(V6, t); //V6 is for Temperature } void setup() { Serial.begin(9600); // See the connection status in Serial Monitor Blynk.begin(auth, ssid, pass); dht.begin(); // Setup a function to be called every second timer.setInterval(1000L, sendSensor); } void loop() { Blynk.run(); // Initiates Blynk timer.run(); // Initiates SimpleTimer }

[@mohamedtamer5601]

I am having the same problem.

[@ДиасЖапсар]

Please, made video with water sensor