I've had bad experience with UART adapters in the past. They usually are very limited, because they don't support all the common voltages in today's electronic projects, they are missing pins for various use cases, they are easily damaged, and have freezes and latchups. They either have quality problems, or those that don't, only cover a portion of the functionality I need. At one point I've had enough, and I started making my own device that can replace my collection of previous ones and at the same time is reliable and robust.

All the pins, wide voltage range, galvanic isolation, reverse polarity protection, IO over-current protection, ESD protection, an enclosure, custom baudrate support, LEDs, GPIOs, filters and more. See full list over at CrowdSupply.