Visual studio form not able to receive the data from Arduino when first connected to usb

Projects Interfacing w/ Software on the Computer
6

The most common properties of a serial connection is:

  • Baudrate
  • Number of stopbits
  • Number of databits
  • Parity
  • Flowcontrol

You can take a look at the reference here: SerialPort Class (System.IO.Ports) | Microsoft Learn

Edit:

Also try asserting the RTS signal. Even with flowcontrol disabled.

See, SerialPort.RtsEnable Property (System.IO.Ports) | Microsoft Learn