If you need help resolving a specific hardware connection issue, please share , the USB-to-Serial converter chip you are using, or the error messages you are encountering so I can give you precise troubleshooting steps. Share public link
Set your Data Bits (usually 8), Stop Bits (usually 1), and Parity (usually None) based on your device datasheet. sscom 3.2
: Capable of sending text or binary files directly through the serial interface. If you need help resolving a specific hardware