Above you can see [Hans’] creation next to the official Arduino USB-to-serial programmer. He used the same connection scheme, but went with an edge connector for the USB instead of using a mini ...

While the Arduino family of boards connect to your computer using a USB virtual serial port, the ATmega ones have an actual serial connection on-board.

There are already many USB-to-TLL debug boards on the market, but Olimex USB-SERIAL-L open-source hardware USB-to-serial board is more advanced than most with not only Tx/Rx pins, but also CTS/RTS ...

The library is based on the IDF USB Host VCP component and it is a wrapper to use it on Arduino IDE. Tested on ESP32S3, but should work on S2 based devices. The sample code is a simple USB<->Serial ...

Learn how to program the ESP32-CAM development board using USB to Serial converters. This guide covers pinouts, boot modes, hardware connections, and troubleshooting methods.

It's of course backwards compatible with existing Arduino add-ons, but sets itself apart with a new USB controller with lower latency and driver-free operation on Mac and Linux.

Windows Update drivers bricking USB serial chips beloved of hardware hackers The move to combat counterfeit chips leaves hobbyists stuck in the middle.