I was asked to post my tools for headless Twiddler usage here:
The two tools are: 1. A NodeJS script to read the binary format of the file containing recorded keypresses that sits on the Twiddler USB drive, and 2. a small shell script to move the resultant text to another file.
I also use NodeRed, not seen in this repo, to watch for the Twiddler being connected and its drive being mounted, and then run the aforementioned tools.
So my flow is: Go for a walk and take some headless notes, then get back to my computer and plug it in and have those notes automatically put in my personal "GTD" inbox.
It's been very effective and robust for me. I hope others enjoy it.
Note: If you are not into Node or JS, please note how simple the conversion script is, it really could be written in any language with filesystem access.