Hi,
I came up with a problem regarding my nodemcu light controll a while ago This is the regarding thread
and it looked like I solved the problem.
A few days ago I woke up in the middle of the night and my light was turned on, this happened a few times since then.
I know it has something to do with my esp disconnecting from the internet for a short time (our internet host has some struggle these times); it only turns on after the esp reconnected to the internet, but isnt turned on every time; it seems random!
I have a relay board connected to the esp and use two relays to switch between the 2 inputs for the light (to form a two-way connection, so I can controll the lights with both a switch and blynk.
What causes that problem? 
Code: (Code needed for the light is between **)
#define BLYNK_PRINT Serial
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "";
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "";
char pass[] = "";
long unsigned int switchActivated;
long unsigned int switchActivated2;
BlynkTimer timer;
**int light = 0;**
void setup()
{
// Debug console
Serial.begin(9600);
**pinMode(4, OUTPUT);**
** pinMode(0, OUTPUT);**
Blynk.begin(auth, ssid, pass);
}
**BLYNK_CONNECTED() {**
** Blynk.syncVirtual(V3);**
}
BLYNK_WRITE(V1) //Button Widget is writing to pin V
{
if (param.asInt()){
switchActivated2 = millis();
digitalWrite(5, HIGH);
Blynk.virtualWrite(V1, HIGH);
Blynk.virtualWrite(V5, 1023);
Blynk.virtualWrite(V4, 0);
}
}
BLYNK_WRITE(V2) //Button Widget is writing to pin V
{
if (param.asInt()){
switchActivated = millis();
digitalWrite(16, HIGH);
Blynk.virtualWrite(V2, HIGH);
Blynk.virtualWrite(V4, 1023);
Blynk.virtualWrite(V5, 0);
}
}
**BLYNK_WRITE(V3) //Button Widget is writing to pin V**
**{**
** if (param.asInt()){**
** if (light == 0) {**
** digitalWrite(4, HIGH);**
** digitalWrite(0, LOW);**
** light = 1;**
** }**
** else {**
** digitalWrite(0, HIGH);**
** digitalWrite(4, LOW);**
** light = 0;**
** } **
** }**
**}**
void loop()
{
Blynk.run();
timer.run();
if(switchActivated > 0 && switchActivated + 20000 < millis())
{
switchActivated = 0;
digitalWrite(16, LOW);
Blynk.virtualWrite(V2, LOW);
}
if(switchActivated2 > 0 && switchActivated2 + 20000 < millis())
{
switchActivated2 = 0;
digitalWrite(5, LOW);
Blynk.virtualWrite(V1, LOW);
}
}