Arduino UNO + ESP8266 + Ultrasonic sensor + Blynk

[PeteKnight]

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Having trouble with the coding

Before this happens, i insert the SimpleTimer Library from the Github and include the library in the coding, but it is no recognised when i deleted the coding and back to this one and this appear “Error Compiling for Board Arduino/Genuino or Mega 2560” how to fix this? #include <BlynkSimpleStream.h> BlynkTimer timer; char auth[] = "cabb6d95d9804956b25f9e4553fc10b8"; int GreenMe =4 ; int YellowMe =3 ; …

Pete.