Ah, I mistranslated french, indeed they are hard to find ... The only shop stating a delivery date is 05-2022 I might be able to compile the software ? Anyway, thanks for the info!
Thanks for the help! I got a Rpi 1 and a pi zero W collecting dust right here, can those still be used ? I have been googling and was able to find 3B+ still in some local stock, so it should be doable. I'm happy to hear it might work (on both protocols)!
I'm looking for some pre-buy support. We have a haematology instrument that has a parallel port which is intended to support external printing (based on the original manual, it supports ESC/P2 and PCL3). We connected this to a HP desktjet 310 portable printer and this worked for years, but now ...