If you doesn't have TTL (Transistor-Transistor Logic) USB and want to do Rx-Tx transmission. Don't worry you can use us arduino. From simple hardware modification you can use your Arduino as USB TTL ...

So he tried his hand with some really small SMD parts by building this USB to serial Arduino programmer. The chip he went with isn’t the FTDI part we’re used to.

Conexión serial entre Seeduino XIao y un USB TTL. Contribute to P4t0R/Arduino-USB_TTL development by creating an account on GitHub.

To learn more about the USB to TTL plug and play USB-UART adapter project checkout the promotional video below. Early bird pledges are now available for the interesting project from roughly $4 or ...