Humidity and Temperature Monitoring with Raspberry Pi and New Blynk2.0 IoT App and Web Dashboard 

Thanks 🙏

AF_INET(host, port) error is encountered while raspberry pi code is trying to connected through Internet Protocol version 4 (IPv4) socket (AF_INET). 

Try to check Check Firewall or Network Restrictions or if you can provide the internet to raspberry pi through other hotspot or wifi.

Connect the DS18b20 with raspberry pi analog pin, add the code and that’s it.

@@SMEDehradun Great! If I want to connect a type K thermocouple to it in a way that also integrates with the Blynk software, what should I do?

Connect & update the code for thermocouple. That’s it.

You can use Precise sensor with ESP32 or STM32 board for best performance.

@@SMEDehradun can we discuss or chat

Drop your query here.

@@SMEDehradun i need your guide on how implement it but i need a personal chat with you thats if you dont mind

Drop mail at schematicslab@gmail.com

It’s working with new blynk2.0

@@SMEDehradun Alright, big thanks ❤️

🙏

It will work.

These video can help you. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-SbY0Y51e2uM.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-5QBFDO5xoZI.html

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You can read the sensors as per the available pins in the RPI. Check the datasheet of the RPI.

Hi, I'm facing an issue, I'm not able to connect to the Blynk platform. Could you please help me resolve the issue

What’s the problem you are facing.

Pass the variable that’s stored Fahrenheit values to the V0 & V1.

@@SMEDehradun can you give more detail. I'm not 100% sure what you mean

The send the value of the variable in which you have stored the Fahrenheit temperature to virtual pin of blynk. Simple. And also print that to serial monitor so that you can see the results.

It runs the correct value for a while then all of a sudden gets the below error with this edit - blynk.virtual_write(0, humidity,) blynk.virtual_write(1, temperature * 9/5 + 32). Here's the error - Temp=71.8F Humidity=33.6 Values sent to New Blynk Server! Sensor failure. Check wiring. Traceback (most recent call last): File "/home/carma/blynk-library-python/DHT22_NewBlynk2.py", line 46, in timer.run() File "/home/carma/blynk-library-python/BlynkTimer.py", line 87, in run [t.run() for t in self.timers] File "/home/carma/blynk-library-python/BlynkTimer.py", line 87, in [t.run() for t in self.timers] File "/home/carma/blynk-library-python/BlynkTimer.py", line 128, in run self.func() File "/home/carma/blynk-library-python/DHT22_NewBlynk2.py", line 38, in myData blynk.virtual_write(1, temperature * 9/5 + 32) TypeError: unsupported operand type(s) for *: 'NoneType' and 'int'

I know thats a lot but I have scoured the blynk community and asked there but no attempts from suggestions there have any better outcome. Thank you very much in advance.

Haven’t worked with BeagleBone.

@@SMEDehradunme either😢 but i dont know why there's BeagleBone Black error in turminal page...

Yes. You can use same script in your raspberry pi. It will work in similar manner.

🙏

There are lots of library available for DHT sensor that works fine.

@@SMEDehradun I tried the new adafruit_dht. Unfortunately it doesn't work as it returns error on the adafruit_dht_read line. Have a look I would be interested in a working solution

@@Kritsalos @SME Dehradun It worked for me, but unfortunately couldn't get the data on blynk web and app. On terminal it shows the values by using adaruit_dht library. I can share the codes, can you help me find out where did I do wrong? btw I was using DHT22 Sensor and raspberry pi 4.

Hmmm Drop the mail with code & snapshot of the output you are getting at schematicslab@gmail.com

Same here AdafruitDHT not working

Custom server?

@@SMEDehradun yes . Custom sever in blynk v1

Now blynk V1 is not available.

@@SMEDehradun I am using ESP8266 and ESP32 but not use on RASP

But you can work on Blynk2, blynk1 is not available

Check your blynk credentials and put in the code & and then try.

I don’t have NPK Sensor. You need to courier the sensor to me.