My father and I had a rough time with my budding 'hacker nature' as you describe it. I was always tearing stuff apart to see what was inside. It pissed him off that in the process of exploring I would break stuff.
In some areas, electronics, chemistry, he had some input. But he had no idea how to encourage me, or help me. He was trying to teach me Maxwell when I couldn't even get long division to cross check reliably. I felt like an idiot because I couldn't understand what he was trying to teach me. I was willful hot head and he was a hot head.
Our 'bicycle incident' ended in a huge blowup when I was 13 that deeply scarred our relationship until I was in my late 20's. He flat out refused to help me rebuild my bike. I had no access to his experience, or to the correct tools. When my 20" sears special finally started falling apart after 6 years of hard use and abuse it was 'tough shit.' Then one night he did something really stupid he berated me about it. He told me I had allowed my bike to fall apart.
I reminded him that he never even gave any suggestions for how I should go about maintaining it, even when I asked for help. I reminded him that I was not born knowing how to repair stuff, nor did I know where to find good materiel on it. The books in the library focused on 'real bikes' (10-speeds and early BMX stuff) I had figured out the basics.. oiling bearings, replacing tubes and tires. But what do I do about cracked forks, a stripped gooseneck, or broken coaster-brake retaining strap? How do I re-true a rim? He knew! Where's the guidance.... Dad?
His response to that: A serious beat down.
I gave up on bikes. I still don't like messing with them even though I like riding a lot.
I also stumbled onto a mentor. Alton was a machinist who lived near by. That man could build almost anything out of metal, and repair everything else. He had the tools, patience and enough free time to teach me a lot... mostly by dragooning me into being an apprentice.
From Alton I learned the Art of Hacking.
Eventually my Dad got over whatever it was that set our relationship on a dark path, and I forgave him. By then, though, he wasn't really a guiding influence. If anything he helps me refine my teaching skills, because he wants to understand how wear-leveling on an SD card works... He knowns each cell in a FLASH array can be written to a few thousand times before they fail, and he knows better than I do WHY they fail. He wants to know how long to expect an SD card to last before he should replace it.
So.. take the time to teach your sons and daughters what you DO know... Try not to avoid the subjects just because you are tight on time, and their sudden interest in something catches you off guard. Don't expect them to get it the way you did. Don't expect that you are a good teacher of the subject, just because you are good at it.