Questions tagged [blynk]
IoT platform to connect your devices to the cloud, design apps to control them, and manage your deployed products at scale.
30 questions
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2
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99
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Can't sync ESP32 with Blynk
I was trying to display the readings of my dht11 sensor on the Blynk dashboard but I am struggling a lot. A little help would be really appreciated.
#define BLYNK_PRINT Serial
/* Fill in information ...
- 111
2
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0
answers
86
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My esp01 code keeps on erasing after reboot
I am uploading a simple Blynk cloud example code to control a led on GPIO2 of my esp01 board.
#define BLYNK_TEMPLATE_ID ""
#define BLYNK_DEVICE_NAME ""
#define ...
- 21
1
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2
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764
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NodeMCU wont connect to Blynk
My NodeMCU wont connect to Blynk with my code but works fine with example code and same auth token and WiFi info. Cant figure out why its not working. Must be something in my code interfering with it (...
- 71
1
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1
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157
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Node MCU not functioning correctly
i have a node mcu and i uploaded one example code to test it for rf signal decoding it worked. so after that i have written a code based on that and when i uploaded the code my node MCU suddenly isn't ...
0
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1
answer
4k
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Blynk, but continue program if Blynk connection fails
I'm having an issue with Blynk.begin(auth, ssid, pass);
The problem is, when it fails to connect to the wifi, the rest of the program does not continue.
I'm using a Wemos D1 and it is also controlling ...
- 103
1
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0
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431
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Maximum baud rate for sending a byte of data via SoftwareSerial from master Arduino UNO to slave Arduino UNO
I am trying to read data from a Blynk widget via ESP8266 and Arduino UNO and trying to send it to another slave Arduino UNO. But, the problem is the data is taking some time to reach to the slave ...
- 21
1
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0
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53
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Arduino wait for incomming data from blynk terminal [duplicate]
I need to add wait command in code where it waits the next input value from blynk terminal to arduino? How can I do that? please help, I will appreciate your help, Thank you.
Here is my code
...
- 103
1
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1
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358
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How I can send data information without work WiFi to LCD?
Hi everyone I am beginning learn coding and the second language English. I have small project I use Arduino uno , esp8266 , dht11 , lcd I2C and use blynk app in my project I have the code and work ...
- 11
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1
answer
134
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Adding WiFi to my Arduino Keypad Lock
I'm a really passionate beginner with arduino and electronics and I've built a Keypad lock for my room's door (inside the house).
I've used an arduino that activates a motor using a transistor to ...
- 1
0
votes
1
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120
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Esp and blynk app
It is possible to control one relay using Blynk app and also using an atmega? To a better understanding think at a relay that will turn on a fan when you use the blynk app. but when you don;t have the ...
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0
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453
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Arduino Pro mini does not wake up after a few interrupts from DS3231
I hope someone can help me. I'm building a GSM water level meter that runs on solar power, using an Arduino Pro mini, a DS3231 RTC, a JSN-SR04T - ULTRASONIC SENSOR, and a SIM800L along with a DFrobot ...
- 11
0
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1
answer
998
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Combining two code of two sensor in one program
I'm using two sensors, which is Galvanic Skin Response sensor and Heartrate sensor. The problem is that when I combined both of the codes, the only output that is showing up is from Heartrate only ...
- 3
1
vote
1
answer
263
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Blynk app, DotStar bluetooth control code help
This is my setup:
Arduino Mega;
HM-10 bluetooth module (bought off ebay, so not sure if genuine but works);
Adafruit Dotstar addressable LED strip;
iOS Blynk app;
Hardware-wise, everything is ...
- 19
0
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1
answer
856
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Notifications in constant loop (Blynk) trying to trigger along with serial function
This is an extension from a previous thread that was getting lengthy and off the original topic. I have the following code which monitors the state of a float switch (high or low). I upload the sketch,...
- 107
1
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1
answer
4k
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Update button state in Blynk app through the code
I'm using Blynk along with a WeMos D1 R2 and i can change modes through an ON/OFF button.
I can succesfully change mode and make my application go from mode 1 (irrigation) to mode 2 (Fertilization), ...
