Hi there!
After more time of working, testing, and, more long process, writing the documentation (help offline) I publish my new OTL for Houdini (17.5 and up) to create a dust/smoke FX generated from the contact between one or more geometry.
The tool is inspired by another tool I did and used in production on some TV-Show for kids (check on my LinkedIn profile). In the last 4 months, I re-created, re-design, and fixed some problems from the old OTL for made a very stable and cool tool you can use for your FX and in more cases is "ready-out-the-box".
It's a payment tool and if you buy the version for Houdini 17.5 I give you a free update for the next release with the sparse solver.
buy now here https://gum.co/NVcJM
If you follow me on Patreon you can take it for free.
I'm working on the version with sparse solver, if you get it now you have the update for free.
Thanks
Matteo
video