Thought I'd share a recent highly successful duet wifi conversion on the latest printer for our shop. It's a Creatbot D600 Pro with excellent hardware but terrible 8-bit electronics based on a Frankenstein closed source Marlin flavor. They will not share the source code and refuse to enable things like thermal runaway and print quality wasn't up to par among other things.
The duet has really made it feel like a premium industrial grade machine and quality/reliability is superb.
I designed a drop in base mount for the thingiverse paneldue mount to directly attach to which works nicely.