I've been tinkering with Processing 4 and PEmbroider to embroider a few tests with the Alfa Duo.
I'll share some of my experiments, but I want to make sure I have things worth showing and I have a few tests working.
Back in December 2020, I used the JEF format to save embroidery files and they were working in the Alfa Duo machine. (Here's a video of those experiments.) Actually, the test files I saved back then still work with this machine. But the latest version of PEmbroider generates JEF files that make the machine crash. Luckily, I've been able to make my files work with the PES file format.