Miscellaneous distractions and diversions.
Today’s project: metal casting! I’d been wanting to try this for years, because who doesn’t love playing with molten metal? This was a single-sided open air sand casting process, which is about as simple as it gets. You basically just…
Recently I’ve been toying with the idea of building an Apple II video card. Like many of you, I’ve grown tired of searching for the dwindling supply of monitors with a native composite video input, and frustrated with available solutions…
Yesterday’s post contained lots of details about Apple II copy-protection and the minutiae of 5.25 inch floppy disk data recording. It mentions that bits are recorded on the disk at a rate of 4 µs per bit. This is well-known,…
For most of 2019 I was going crazy trying to solve unexplained problems with Windows 10 external video on my HP EliteBook x360 1030 G2 laptop. I bought the computer last May, with the idea to use it primarily as…
Now that I have a solar-powered 12V battery, how can I charge my laptop from it? An inverter would seem absurdly inefficient, converting from 12V DC to 110V AC just so I can connect my Apple charger and convert back…
Sometimes you can have too much of a good thing. Take a look at the growth of residential roof-top solar power in California. For individual customers who are blessed with sunny weather, installing solar panels can be a smart financial…
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