Need help on how to get data from ultrasonic sensor by using virtual pin

[PeteKnight]

@xanotic

Serial.begin(38400);

Your Uno isn’t able to consistently read and write dat to a SoftwareSerial port at this speed, it just doesn’t have the processing power to emulate a serial port with this baud rate. You should read this…

Understanding hardware and software serial ports

I’m still seeing frequent posts, mostly from new members of the forum, who are confused about how to add WiFi or Bluetooth connectivity to devices like the Arduino Uno, Nano or Mega, or from people who are trying to use serial communication with some other type of peripheral. I thought I’d try to put together some guidance on how to do this properly. First things first though – if you’re using a device such as an Uno, Nano or Mega that doesn’t have built-in internet connectivity then you shoul…

Pete.