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Questions tagged [blynk]

44 questions
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1 answer

Connect Arduino to Blynk with ESP8266

so I got my Arduino Uno today. For a porject I want to be able to control some relays on my Arduino via Wifi (via Blynk app). For this I want to use the ESP8266-01 as a Wifi shield. I used this tutorial:…
Christoph Poser
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1 answer

How to fix 'IndexError: index out of range'

I have built a simple app with Blynk. Unfortunately, I regularly get the error: Traceback (most recent call last): File "/home/pi/Desktop/Blynk/blynktest2.py", line 12, in blynk.run() File…
Gerke
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Timewidget Input from blynk app

I am developing time based application using blynk app. if my timing is between set time limit relay must be on else relay must be off. I am pasting part of my code . Here in below code if my time set within 1 hour range it will work . if time is >…
AMPS
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3 answers

How to control multiple devices with Blynk app?

I have 1 project with token and one ESP8266 board with this token. I can easily control my hardware from app, however I do not understand how can I control more than 1 ESP? For example, I want to add one more device to existing project how can I do…
Alex Isayenko
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Code for PIR Motion Sensor not showing any output with Blynk

So in this project, I'm trying to connect my PIR sensor switch on Blynk to switch on/off through my phone. Although this code compiles just fine, I'm not getting any output from the PIR sensor or LED. I connect it through an ESP8266-01 with my…
Wong Wei Hong
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Blynk change properties of GPIO

I have a small problem with the python library of BLYNK: I need to set the properties of an appbutton with blynk.set_property("G20", "offBackColor", "#000000") It only works with blynk.set_property("20", "offBackColor""#000000") with a virtual…
YOUR_MOM
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How can I read multiple sensor data with blynk app and python?

I am trying to connect a bunch of sensors on my ESP32. I want to connect it to the Blynk app in order to get some data on my phone. I am currently coding on python, however, I have an issue. The code seems to always stop after it reads the light…
gapansi
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Blynk.syncVirtual(V1) not updating Virtual Pins values

I was trying this code to run stepper motors and print Blynk app joystick's X and Y coordinates. But the code is only getting the joystick values once. But it works fine when I use if condition instead of while(). I needed while condition to run…
Electro Tech
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How to read analog pin data from the Blynk HTTP RESTful API?

I am making my own app for my project with Blynk so I need the Blynk API it works fine with Digital Pins I am getting the right value. But I tried with analog pin I used this syntax: http://blynk-cloud.com/auth_token/get/pin When I give the analog…
Rohit
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Blynk_Write parameter to enter and break a loop

I am new to Arduino and blynk. I was working on the automated cloth line with blynk as my mobile application and I got it partially working. I am using virtual pin to enter the loop which is working perfectly fine. But upon the same button press it…
Saksham Gautam
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How to add custom interface function to Arduino library

I want to add event method to my arduino library something similar to cayenne or blynk framework.I have no C or C++ programming background. CAYENNE_IN_DEFAULT() { //to-do } Here is Fusi.h #ifndef Fusi_h #define Fusi_h #define DEBUG true …
Ashish Sahu
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1 answer

no matching function for call to 'WidgetBridge::WidgetBridge()'

I've visited this forum many many many times, but this is my actual first post here. Usually I can find my answer here and I guess I've probably found it this time, but this time my knowledge is lacking to understand the solutions given (been…
Wolph42
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Uploading the email sketch on ESP8266 via Arduino IDE

I am working on a project to send an email when a button is pressed using arduino uno, wifi module ESP8266, and the Blynk App. I was able to upload the sketch on the wifi module (ESP8266), but it's not responding. Here is the output that I am…
LearningEveryday
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1 answer

Can't connect Arduino Uno to Blynk via Bluetooth

I have the HC-06 bluetooth hardware device set up with my Arduino UNO. The RX on the Arduino is connected to the TX on the HC-06, and vice versa. They share a common 5V and GND. I'm trying to connect to Blynk. I've got the Blynk widget set up on…
Human Cyborg Relations
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The Sensor data from the nodemcu is not updating to blynk

I have managed to get the first initial values updated to the dashboard, but after the first update the dashboard values seems not to update. Any reasons? Any suggested changes to the code? // Fill-in information from your Blynk Template…
Tejas J Shetty
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