This week’s post on core rope ROM was pretty popular. [Joey] wrote in with a book recommendation for those that found the project interesting. Digital Apollo discusses the technology which NASA built into the guidance computer. That was also the subject of a recent Retrotechtacular.
When we last looked in on [Vincent's] plywood stool project he had branched out into plywood folding chairs as well. Here’s two updates on his progress.
This one’s just silly. To keep up with his wife on exercise goals, this guy cheated using a reciprocating saw to spoof his exercise. Tape the FitBit to the saw blade, clamp the saw to the workbench, and then let her rip! [via Reddit]
[Harrison] wrote into share the Arduino button library he developed. It is designed to allow detection of multiple types of button events without blocking other operations. He came up with the project to use with his motorcycle hacking.
It looks like [Bertho] has kitted up his Executive Decision Maker. We first saw this as a perfboard project a couple of years ago.
And finally, [Bob Alexander] makes your hard drive clock look puny. His uses the platter from a 40-year-old mainframe hard drive.
So your hard drive quit working. Don’t despair, with a “little” work your disk can be repurposed into a clock like the one seen above. I made this clock after several iterations of various success, including the first revision, which was simply the platter with a clock kit from a hobby store screwed into the middle. Still a very neat effect, but if you want to actually tell what time it is, it helps to have the numbers available.
For this, you’ll need some sort of CNC machine (a kit-build router in this case), and some way to generate the Gcode to get everything cut correctly. A guide to how the logo was eventually turned into something a machine could understand is provided here. Of course if you’re not sure what logo would look good on your clock, you can always skip a few steps and engrave the our logo. In this [HAD] article, it’s conveniently provided in .dxf format, which can be converted by a CAM (computer-aided manufacturing) program into code that your machine can understand.
Check out after the break for a video of two “platter clocks” being engraved using these methods: Continue reading “Trashed Hard Drive? Why not an Engraved Clock?”