I try to get the Sparkfun Bus Pirate v3.6a to work on a MacBook Pro with macOS 10.14, but I don’t get it to work. When I connect the USB cable, no /dev/tty… or /dev/cu… device appears. I have installed the latest driver from https://www.ftdichip.com/Drivers/VCP.htm, macOS 10.9 or higher, 2020-08-13, version 2.4.4, but that did not help.
As an add on to my previous post… I tried it on a Linux machine. On that machine, a /dev/ttyUSB0 device appears and I can connect with it using screen.
I still hope that I get the Bus Pirate to work on macOS.
I managed to solve it. macOS Big Sur was not the problem, I still work with 10.14 Mojave and 10.15 Catalina. It turns out that the Bus Pirate does not work on a Macbook 2014, but does work on a Macbook 2017. I don’t know why, but all is good now for me.