My ESP-01 (Wifi Module) connected to arduino always disconnects and reconnects repeatedly to blynk.

[PeteKnight]

@Codename_Hydra

#define ESP8266_BAUD 115200

The SoftwareSerial library is trying to emulate a hardware UART with software. Unfortunately the Arduino Uno doesn’t have enough processing power to reliably support high baud rates via SoftwareSerial.

You need to tell your ESP-01 (via an AT command, which is best done using an FTDI adapter) to communicate at 9600 baud then change your sketch to use the same baud rate.
How you do this will depend on the firmware version of your ESP-01.

The issue is fully explained here…

Understanding hardware and software serial ports

I’m still seeing frequent posts, mostly from new members of the forum, who are confused about how to add WiFi or Bluetooth connectivity to devices like the Arduino Uno, Nano or Mega, or from people who are trying to use serial communication with some other type of peripheral. I thought I’d try to put together some guidance on how to do this properly. First things first though – if you’re using a device such as an Uno, Nano or Mega that doesn’t have built-in internet connectivity then you shoul…

Pete.