Lee H Goldberg

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Principal

Recovering Engineer, High-Tech Journalist, Solid State Lighting Junkie, Green-Tech Maven, Open-Source Opinionator, Freelance Writer, Maker, Aviator, Gadfly, Geek Dad.


Lee H Goldberg

's contributions
  • 11.17.2015
  • Rugged 16mm LED indicators feature customizable "Secret-Until-Lit" option
  • As Scott said, there are very practical uses for hidden indicator lights. But now that you mention it, I prefer your idea. I would really love to have a "Landing Gear Up" or a "Missiles Armed" indicator lurking in the dashboard of my truck! Now, if I can only get APEM to stencil up a few lights for me...
  • 10.20.2015
  • Make your own LED video wall
  • I sympathize with your disappointment Jim, but am still amazed at what even these early DIY video walls can do. Let's hope that your enthusiastic vision becomes a reality in the near furture. And if you happen to develop something along these lines (or any other "illuminating" invention) please make sure to bring it to my attention.
  • 10.20.2015
  • Hands-on review: Osram's Lightify smart lighting
  • Those are great questions Mr. Divakar, I 'll try to answer them in the order you posed them. First, the kit works without a hitch AFTER you get it set up. As I mentioned, the set-up procedure is not as well-documented as it should be and there are still some places in the sequence where conflicts and/or errors can arise. I probably should have been more clear about my concerns in the review that it will take one more pass for the setup UI to be truly consumer friendly. Next, Osram does have Wi-Fi in the Gateway - they use it to communicate with your Smart Phone. The gateway uses ZigBee HA to communicate with the lighting devices it controls. I can't speak for Osram but think they did this partly because of ZigBee's robust characteristics and partly to be compatible with a growing ecosystem of HA-compatible products. I did test the system for through-wall operation and it worked well thorough a single wall. I believe I successfully tested through 2 walls but didn't document itso I'm not sure. I also failed to test for range due to lack of time before my deadline. If I do a follow-on story about cmpatibility with 3rd-party products I'll definitely re-visit these issues too. Speaking of which, I'd really like to test a few other kits, including Luxtron (Lutron?), but haven't had luck in obtaining any from the manufacturers yet. I'll probably buy a few HA-compliant bulbs myself to test their compatibility with the Osram system but can't afford to do this for every product I test. If you have any suggestions about getting evaluation units I'd be very interested to hear them.
  • 10.20.2015
  • Scenes from the desktop manufacturing revolution, part 1
  • Rocco - it sounds like Leo may need the boards sooner than your machines will be available. At the risk of putting you on the spot, would it be too much trouble to turn out a few boards for him at a more reasonable price (or in exchange for a kickstarter sponsorship??) - it would make a good demonstration/confidence builder if you can afford the time and effort as you work to bring Prometheus to market. Apologies if my suggestion is out of line but I felt itwas worth considering.
  • 07.02.2015
  • $49 Arduino-compatible board features enhanced Cortex M7 MCU
  • Thank you Keith - I really appreciate you digging up a place where readers can get the kit at a fair price. I should have checked the pricing but made the silly assumption that, unlike components, eval kits have fixed pricing regardless of where they are offered.
  • 07.02.2015
  • $49 Arduino-compatible board features enhanced Cortex M7 MCU
  • Thanks for pointing out the "missing" DAC - I missed it amid the mountain of features. I suspect that the omission was a deliberate trade-off, based on the mainstream applications it's targeting. But I understand your concerns since the Maker/DIY community is all about content creation .
  • 05.20.2015
  • LED Lady, Rumblings of China LED industry shakeout , Metal-free OLEDs on the horizon
  • I don't know whether to tell you to take off your tinfoil hat or congratulate you on your prescience. Sadly, I think you are at least partly correct in your assessment. I don't recall the specifics at the moment but I believe there has already been some pressure from Asian manufacturers to develop a reliability certification standard for LED lights that requires an average lifetime of significantly fewer than the 30-50,000 hours expected from a typical LED device. It's my understanding that this was primarily for cost savings rather than to prevent a glutted market. In any case, I'll try to get the details and post them here. That said, I'm hoping that market pressures and market transparency will still give manufacturers a disincentive from "shaving" hours from their products' lifetimes. In such a scenario, they would rely instead on added features, higher efficiencies and better light quality to maintain sales in a semi-saturated market.