Thank you for answer PeteKnight.
But i didnt understand here.When is using Blynk.virtualWrite(vpin,value) i used this in arduino side:
'"
void p1slot1() // parkng 1 slot1
{
if( digitalRead(parking1_slot1_ir_s) == LOW)
{
sensor1 = “255”
delay(200);
}
if( digitalRead(parking1_slot1_ir_s) == HIGH)
{
sensor1 = “0”;
delay(200);
}
}
‘’’
In nodemcu side i used this
‘’’
void sensorvalue1()
{
int sdata = led1;
// You can send any value at any time.
// Please don’t send more that 10 values per second.
Blynk.virtualWrite(V10, sdata);
}
‘’’
What should i add here extra or should i delete here?