Hackaday Links: October 11, 2020

If you’re concerned with SDR and digital sign processing however don’t know the place to begin, you’re in luck. Ben Hillburn, president of the GNU Radio Project, recently tweeted about an online curriculum for learning SDR and DSP using Python. The course was developed by Dr. Mark Lichtman, who was a lead on GNU Radio, and from the look of it, that is the place to go to study placing SDRs to make use of doing cool issues. The course is chock stuffed with animations that make the ideas clear, and clarify what all of the equations imply in a method that’s certain to enchantment to sensible learners.

It’s not a lot of a secret that the Hackaday neighborhood loves clocks. We construct clocks out of every little thing and something, and any distinctive method of telling time is rightly applauded and celebrated on our pages. But does the clock motif make a great foundation for a online game? Perhaps not, however that didn’t cease Clock Simulator from changing into a factor. To “play” Clock Simulator, you advance the fingers of an on-screen clock by urgent a button as soon as per second. Now, because of Michael Dwyer, you don’t even have to do this one easy factor. He developed a hardware cheat for Clock Simulator that takes the 1PPS output from a GPS module and wires it right into a mouse. The pulse stream clicks the mouse as soon as per second with atomic precision, rendering the participant irrelevant and making the entire thing much more pointless. Or maybe that is the purpose.

Maybe we have been somewhat onerous on Clock Simulator, although — we are able to see how it will assist obtain a Zen-like state with its requirement for regular rhythm, a minimum of when not dishonest. Another supply of Zen for some is watching precision machining, and extra exact, the higher. We bumped into this mesmerizing video of a CNC micro-coil winder and located it fascinating to look at, regardless of the vertical format. The winder is constructed from a CNC lathe, to the carriage of which a wire dispenser and tensioning attachment have been added. The wire is hair-fine and passes via a ruby nozzle with a 0.6 mm bore, and LinuxCNC controls the tiny forwards and backwards movement of the wire because it winds onto the shape. We don’t know what the coil can be used for, however we respect the precision of winding one thing smaller than a matchhead.

Dave Jones over at EEVblog posted a teardown video this week that goes to a spot few of us have ever seen: inside a processor module for an IBM System/390 server. These servers earned the title “Big Iron” for a motive, as every little thing about them was engineered to carry out. The processor module Dave present in his mailbag was value $250,000 in 1991, and from the look of it was value each penny. From the 64-layer ceramic substrate supporting as much as 121 particular person dies to the stout oil-filled aluminum enclosure, every little thing about this module is spectacular. We have been notably intrigued by the spring-loaded copper pistons used to switch warmth away from every die; the two,772 pins on the opposite facet have been fairly neat too.

Here’s an attention-grabbing query: what occurs if an earthquake happens in the midst of a 3D printing run? It’s in all probability not one thing you’ve given a lot thought, but it surely’s one thing that common reader Marius Taciuc skilled just lately. As he relates, the magnitude 6.7 quake that struck close to Kainatu in Papua New Guinea (later adjusted to a 6.3 magnitude) resulted in a stable 15 seconds of shaking at his location, the place he was printing a component on his modified Mendel/Prusa i2. The shaking confirmed up clearly within the half because the machine began swaying with the room. It’s in all probability not a sensible option to make a seismograph, but it surely’s nonetheless an attention-grabbing artifact.


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