Cannot Connect Blynk-cloud in Blynk App

[Gunner]

@Fatina_Aisya If you haven’t already found it with the recommended search… I also have a ultrasonic example you can try. It will work just fine without a physical servo attached.

C++ Blynk (Legacy) - Code Examples for Basic Tasks

#16 - Ultrasonic Distance Sensor with Servo This little project used the HC-SR04 Ultrasonic sensor… but instead of boring old distance numbers, it will also position a servo within a range of selected distances. This sketch demonstrates a timer that can be enabled and disabled, so as not to be running something like the Ultrasonic sensor if other critical timing functions need to run. And also demonstrates enabling and disabling the servo, so that there is no jitter or fluttering when it is n…