Follow Slashdot blog updates by subscribing to our blog RSS feed

 



Forgot your password?
typodupeerror
For the out-of-band Slashdot experience (mostly headlines), follow us on Twitter, or Facebook. ×

Comment: Clevo P650SE (Score 1) 558 558

I have a Clevo P650SE laptop (rebranded as the Eurocom M5 Pro, also available as the Sager NP8651 though the Sager variant has no TPM). 15.6" 1920x1080 IPS panel (opted for standard HD instead of 3k/4k due to problems with mixing high/low DPI displays, and I plug in an external 1920x1200 display sometimes), 2.6GHz quad-core i7, nVidia GTX 970M, 512GB SSD for OS/applications, 500GB spinning disk for media (though I'd like to unify those into a single large SSD in the future, moving parts are no fun) and I've boosted it to 32GB of RAM because RAM is cheap and I run multiple VMs sometimes. It's fairly light and portable, extremely powerful, and even under full load the fans don't get terribly loud. Only downside is that it was bloody expensive. I expect to run it for 5 years though.

Comment: Re:rpi comparison (Score 3, Interesting) 41 41

ARM has two general series of processors, the A series, or application processors, and the M series, or microcontrollers. Microcontrollers (such as the STM32F4 in the Armstrap boards) are designed for low-power embedded device use, you *might* run a specialized RTOS on one, but usually it's just your code, running bare-metal. An application processor, such as what you have in your smartphone or in the Pi, is a more general purpose computing core, running faster, taking more power, and using a full OS for resource management and process scheduling. Also, generally, microcontrollers have their own built-in RAM and Flash, while application processors use external RAM and storage (the Pi looks like the RAM and CPU are one, but in reality they're two separate dies, stacked up within the same package, while micros have everything on the same die).

Comment: Comparison to STM32F4 Discovery boards? (Score 2) 41 41

ST makes several ARM M4F based dev/eval boards with built-in JTAG and a few additional chips thrown in to play with (I think accelerometers and MEMS microphones are common). They cost around $15-$20... go to http://www.st.com/web/catalog/... and check the box for STM32F4 under Supported Devices.
So, with what I suspect is the benefit of manufacturer loss-leader subsidies on the Discovery boards, why would I spend $40-$60 more on a dev board?

Comment: Tools for modifying open hardware designs (Score 3, Interesting) 78 78

OSHW has a bit of a difficulty associated with it, and that's the tools used to view/edit the designs. Many proprietary PCB CAD packages are offered in free-as-in-beer versions for boards up to a certain size or pin count, but then you're locked into that package. If you want to take that design and expand it beyond those constraints then you're stuck buying into the next step up of the software, or you have to fully re-design (schematic capture and layout) in another tool. Fortunately KiCAD (http://www.kicad-pcb.org/) seems to be picking up a bit of steam, but for those already using other tools, unless they're deep believers in the full open toolchain philosophy, what incentive do they have to switch packages (and re-implement their existing designs in that new package)?

Comment: Comparison chart (Score 4, Informative) 81 81

I was actually looking at several of these boards recently, trying to find all the multi-core options at/below about $100. I put together a Google Docs spreadsheet comparing various specs (#/type/speed of cores, RAM, Flash, network, SATA, USB, RTC), I've got 18 on the list so far. Looks like I have a few more to add...
https://docs.google.com/spread...

Comment: It has vision! (Score 2) 43 43

This project appears to have computer vision for parts alignment, which is a HUGE deal for a pick-and-place. You need your machine to know if a component is oriented improperly in the reel, and to provide positive feedback on board position by referencing fiducials for accurate placement of fine-pitch components. Other pick-and-place projects I've seen in the past have been just standard 3-axis CNC gantries with a vacuum pickup, the addition of CV means it potentially can truly compete with the high-cost units.

Comment: My CFL lifetime depends on where they were bought (Score 1) 278 278

I've bought a number of Feit Electric CFLs from Costco, and get at least a few years of regular use out of them. However, whenever I've bought the same brand from various local hardware stores (both mom-n-pop and big brand stores) I've had them fail within a few months. I'm not sure what's up with that, but that's my experience. I have yet to try any LED bulbs due to the up-front cost and the long life I'm getting out of my CFLs, and I have no use cases where dimming is necessary.

Have you ever noticed that the people who are always trying to tell you `there's a time for work and a time for play' never find the time for play?

Working...