I need to connect an RPI-4 to a serial modem (a Multitech MT1932ZDXK, to be exact). I recently purchased a pretty blue USB to UART serial console cable from Pimoroni, which I thought might do the job, but it doesn’t. It allows me to connect various GPIO pins to a USB connector that I could plug into my desktop PC. Ideally, I would like a device/cable that I can plug one end into one of the RPI USB ports and a dB25 male connector to plug into a serial device at the other end.
Does Pimoroni sell such a device? I only need it to support 9600 bits/sec. I’m building an exhibit for a local museum to show what we used 30 years or so ago to communicate to a remote computer. The exhibit needs to demonstrate how slow everything was and let everyone hear that magic sound as the modems connected.