Lenovo is announcing a second ARM-powered Windows 10 laptop this week, and this time it’s a Yoga. The Lenovo Yoga C630 WOS (Windows on Snapdragon) is, as you might have guessed, powered by Qualcomm’s latest Snapdragon 850 processor. It’s the first Windows laptop we’ve seen with the Snapdragon 850, and its a chip that Qualcomm specifically designed for always-connected Windows 10 PCs. This new processor ushers in the latest generation of ARM-powered Windows 10 laptops.
can’t be said too many times: foteks are known to roll over, fart and let the smoke out. doesn’t hurt to overspec by 3-5. not when playing with fire.
Knocking over a candle would be an accident. Keeping barrels of petrol in your living room would be negligence. Doing your own mains wiring without the proper qualifications, I dunno which side that falls on. Real accidents can’t be foreseen, but you have to take reasonable precautions.
Converting mains voltage down to 12 or 24VDC to drive a heating element makes no sense. To get 120 watts at 12 volts requires thick wires that can handle 10 amps, whereas at 120V, tiny 1A wires will do. If you’ve ever felt the MOSFET that switches your heated bed on and off, you know it’s working hard to pass that much current. [Makertum] is of the opinion this is a dumb idea. He’s creating a 110 / 230 V, mains-powered heated bed.
The microwave I recently tore apart had a hefty resistor connecting the capacitor to ground, to quickly drain it of power when the magnetron itself wasn’t energized. (The capacitor itself had a label saying there should be a resistor bridging the cap’s contacts for the same purpose.)
Hopefully the era when people did industrial sourcing from an overgrown Beanie Baby marketplace will be looked back on by future generations, and they’ll laugh.
I recall doing the exact same as a kid when in france, on holiday. The french also have those so seductive to interested kids 2-Prong plugs with a gap of ‘just’ that size….
Gardner Minshew II threw two touchdown passes and ran for another score and No. 12 Washington State stopped No. 25…
Given my long-term dislike of EVFs, I was surprised to find myself as comfortable as I was with the one on the Sony A55 and A33. It by no means corrects all the ills of the genre, but does go a long way in the right direction. It still loses highlight detail in scenes with both deep shadows and strong highlights, but I found it workable most of the time. I could generally make out clouds against the sky, important for framing landscape shots. It also seemed to do pretty well under low light conditions, although as of this writing, I haven’t done a lot of night photography with the camera. Still, the large pixels of the Sony A33′s APS-C size sensor mean that its EVF is much more able to form a usable viewfinder image under dim lighting than is that of a typical digicam. Under really dark conditions, I’d still like to see it gain-up a bit more, though, even at the cost of slower refresh rates.
My fairly large (print volume 450x250x350mm) home-made 3D printer uses a mains-powered heat bed made from a junk-pile sourced electric pancake griddle which I ground down to more or less flat and glued a 24×12″ ceramic floor tile down to its top with high temperature silicone. It has a 10 ohm resistance and I use the original temperature control knob as a safety / sanity interlock against thermal runaway and then it is driven by 120v mains power switched by a 25A solid state relay controlled by the normal RAMPS heatbed output. The mains input runs through a breaker box before going to the 24v power supply for the NEMA23 motors and the ATX power supply for the Arduino, RAMPS, extruders, hotends, and Odroid U3 that make up the rest of the printer.
Simple, do you know how expensive it would be to change from 120v to 240v? It would be an insane amount and there would be virtually no benefit.
One nice thing about the Sony A55 and A33′s electronic viewfinder is that the Fn menu is also available in the viewfinder display; you can make many camera settings without taking your eye from the viewfinder eyepiece. As I became more familiar with the camera’s controls, this led to a very efficient shooting style, although it would take more than the few days I’ve had with the camera thus far for this to become second nature.
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