[MrBuddyCasino]

A device that is a bit similar, but more advanced is the Glasgow Interface Explorer: https://www.crowdsupply.com/1bitsquared/glasgow

It costs 145$ instead of 50$, and you can interface with it via Python3 over USB. It is quite flexible due to a reconfigurable FPGA and has some nice features such as automatically detecting UART baud rates, JTAG pinouts, ESD / Under / and Over-Voltage protection on the I/O pins and more.

[westurner]

A $5 Pi Pico has two UARTS, but is not an FPGA; "Show HN: PicoVGA Library – VGA/TV Display on Raspberry Pi Pico" https://news.ycombinator.com/item?id=35117847#35120403

According to https://www.reddit.com/r/raspberrypipico/comments/1aut3l2/co... , pico-uart-bridge turns a pico into 6 TTL UARTs; https://github.com/Noltari/pico-uart-bridge

[wrongbaud]

The Glasgow is an awesome piece of kit, I have one and love it! I wanted the PiFex to be a little more user friendly and targeted towards beginners