Yes, I have an engineering notebook. It's actually a system that consists of both a public codex and a private digital note taking system.
The public codex contains lessons learned and other such things which are publicly shared so that others may learn as well.
The private digital note taking system is less formal and more ad hoc and is thus probably more akin to what you have in mind. It contains semi formal documentation on both engineering processes used and noted properties of physical phenomena (which software is included in) that should be noted to simply remember things.
Both of the note taking systems are very useful as one of the primary purposes is to, again, simply remember things.
The public codex as a notebook mechanism is not used as often as its private digital notebook counterpart, namely because it requires more energy to add new entries given its formal presentation requirements. The private digital notebook, in contrast, doesn't have such stringency and so creating new entries is easier. Also note that it's digital because my physical notebook has run out of available writing space :)
The public codex contains lessons learned and other such things which are publicly shared so that others may learn as well.
The private digital note taking system is less formal and more ad hoc and is thus probably more akin to what you have in mind. It contains semi formal documentation on both engineering processes used and noted properties of physical phenomena (which software is included in) that should be noted to simply remember things.
Both of the note taking systems are very useful as one of the primary purposes is to, again, simply remember things.
The public codex as a notebook mechanism is not used as often as its private digital notebook counterpart, namely because it requires more energy to add new entries given its formal presentation requirements. The private digital notebook, in contrast, doesn't have such stringency and so creating new entries is easier. Also note that it's digital because my physical notebook has run out of available writing space :)