If you are hardcoding your Wifi and Blynk credentials, and reflashing every time when you need to change them, please stop it, seriously. I was like that before, but one day I woke up, and said enough is enough.
I understand that if you do Arduino as a hobby, it's quite difficult to make time to write unnecessary features. But, with this library, you can do it without writing any extra code. Just replace, Blynk with EasyBlynk8266 in your code, then it should just work fine, technically.
If it cannot connect to the Blynk server in 30 seconds, it will switch to Configuration Mode. You will see your built-in LED (if you have one) flashes every second. In Configuration Mode, it starts an access point called EasyBlynk8266-Config, like below. Connect to it.
After you connected, please, go to http://192.168.1.1. You will see a page showed as below.
Enter your credentials, then click Save. After you restarted, you will see your built-in LED flashes 3 times. That means, it connected to your Blynk server successfully.
- ESP8266 core for Arduino https://github.com/esp8266/Arduino#installing-with-boards-manager
- Blynk library https://www.arduino.cc/en/guide/libraries#toc3
Please take a look at examples, as well.
#include <EasyBlynk8266.h>
void setup() {
EasyBlynk8266.begin();
}
void loop() {
EasyBlynk8266.run();
}