Miscellaneous distractions and diversions.
I’m planning to do a partial capacitor replacement on the power supply of my old Macintosh IIsi computer. After 25+ years, these capacitors aren’t in the best condition, and the PSU doesn’t work correctly anymore. When plugged in, it makes…
While I’ve been working on my USB-to-ADB converter with a PIC32, I’ve received a steady barrage of feedback saying I ought to consider an ARM Cortex-M microcontroller instead. There are several reasons I haven’t done that, but one of the…
Did you find an old Mac system in the attic, but it won’t boot up? Was your Craigslist impulse buy delivered without any software? Do you need SCSI utilities to format your hard disk, or a terminal program to connect…
I’m working on a design for a “scribbling machine”, similar to the concept shown here from Make Magazine. For the past three years, I’ve led groups of children through a scribbling machine construction project at our school’s annual Discovery Day…
It’s time for more Apple II love from Floppy Emu! The newest Apple II compatible firmware, apple-II-0.1M, adds a few small but important improvements: Fixed Smartport hard disk timing problem when starting from a cold boot (Apple IIgs, IIc, IIc+)…
How much current does a typical USB car charger consume, when nothing is charging? Zero? Microamps? Milliamps? Is it enough to be concerned about draining the car’s battery? There’s no better way to find the answer than direct measurement, so…
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