How to reconnect ESP8266 NodeMCU to WiFi after lost connection?
The alternative way to reconnect with WiFi is to restart the ESP8266 NodeMCU device. By using ESP.restart () function, we can restart ESP8266 NodeMCU development board. This may recover the lost network connection. Implement the ESP.restart () function inside loop () function to check if your ESP module is connected with the WiFi.
What happens when ESP8266 loses WiFi signal?
This can be useful if the ESP8266 temporarily loses the Wi-Fi signal; the ESP8266 is temporarily out of the router’s Wi-Fi range; the router restarts; the router loses internet connection or other situations. We have a similar guide for the ESP32 board:
Can a NodeMCU automatically reconnect to a WiFi router?
The ESP8266 has the ability to automatically reconnect to your router in case of a Wi-Fi outage. For example, if the ESP8266 is connected to your router and you suddenly turn it off, when it goes back on, the ESP8266 can reconnect automatically. However, many of our readers report situations in which the ESP8266 doesn’t reconnect.
What does onwificonnect ( ) do on ESP8266?
The onWifiConnect () function simply prints that the ESP8266 connected to Wi-fi successfully and prints its local IP address. However, you can modify the function to do any other task (like light up an LED to indicate that it is successfully connected to the network).
How does the ESP8266 handle different WiFi events?
The ESP8266 is able to handle different Wi-Fi events. With Wi-Fi events, you don’t need to be constantly checking the Wi-Fi state. When a certain event happens, it automatically calls the corresponding handling function. The following events are very useful to detect if the connection was lost or reestablished:
Why is my ESP8266 not connecting to Meraki?
Since the “forced” upgrade to MR 25.9 firmware, my ESP8266 devices fail to reconnect to Meraki if they disconnect and connect frequently. These devices can enter deep sleep and connect again every few minutes to update their data. If those periods are smaller than about 10 min, they won’t connect to Meraki networks.