I used a
geared motor similar to the one linked. I made mine about 9 years ago but struggled occasionally to get that reasonable 15 seconds.
To be realistic, 15 seconds is not enough. Mine was an 12" Dobsonian and it took great images both planetary and lunar but for DSO, I really needed more precise guiding and longer subs to get the real detailed I would be happy with now. Below is the only DSO I took with the 15 second subs:
https://photos.app.goo.gl/4vPhCZ9ja6GFhp1r5
plus the more viable on a EQ platform:
Lunar:
https://photos.app.goo.gl/TK4sBDvpQ5mP5bCe6 and
https://photos.app.goo.gl/CDb5CGv8fqrri6hM9 My favorite.
Planetary:
https://photos.app.goo.gl/GBwcDKnr66jrporD7
Now that moved to SA, I had to make a decision to revert back to EQ Platform or attempt to build my one EQ mount. The EQ mount prevailed.
I see no guiding capability with the Baladine mount but I really do not know much detail.