[LINK] Has the world just gone light-headed, or completely bonkers?
kim at holburn.net
Wed Jul 17 23:27:32 AEST 2019
From your wikipedia link:
In an ordinary LED light globe, the LED itself is silicon and the bulb has power circuitry in the base that includes silicon circuitry. Perhaps you mean something different by "active"?
The smart light must have a microprocessor, volatile memory, networking, clocks and perhaps one or more kinds of radio and switching. That's a lot more transistors.
> On 2019/Jul/17, at 10:17 pm, Roger Clarke <Roger.Clarke at xamax.com.au> wrote:
>>> On 2019/Jul/17, at 11:56 am, Roger Clarke <Roger.Clarke at xamax.com.au> wrote:
>>> The thing my inadequate imagination isn't coming up with is why I would want active silicon inside my light-bulb assembly.
> On 17/7/19 9:51 pm, Kim Holburn wrote:
>> Most of my light bulbs are LED lights which definitely have a bunch of active silicon.
> The active silicon seems not to be intrinsic to the function:
> So what does the active silicon do?
> (And why do I want it to do it?).
>>> Remote operation of lights can be achieved by installing active silicon in a control panel that operates a bank of switches.
>>>> On Wed, 2019-07-17 at 10:21 +1000, Roger Clarke wrote:
>>>>> If you need to reset the software in your GE smart light bulb --
>>>>> firmware version 2.8 or later -- just follow these easy instructions
>>> On 17/7/19 11:24 am, Karl Auer wrote:
>>>> This procedure saves them the cost of a reset switch in the bulb
>>>> circuitry. A switch that they cannot have people operating in the
>>>> presence of 240V mains power, so would have to be on the base of the
>>>> bulb, inaccessible when the bulb is in place.
>>>> With the switch, the procedure would be "turn off light, remove bulb,
>>>> set switch, insert bulb, turn on light, bulb will flash three times,
>>>> turn off light, remove bulb, set switch off, insert bulb".
>>>> However, this procedure does not ensure that the customer turns off the
>>>> light before removing or inserting the bulb, so dramatically increases
>>>> the risk that the customer will electrocute themselves while trying to
>>>> reset the bulb. As bulb resets are not a function of ordinary light
>>>> bulbs, these electrocutions will immediately become "GE's fault", and
>>>> they don't want that.
>>>> The actual procedure directly incorporates having the bulb in place and
>>>> safe. The many steps ensure that the bulb is highly unlikely to reset
>>>> So not as insane as it may first appear...
>>>> Regards, K.
> Roger Clarke mailto:Roger.Clarke at xamax.com.au
> T: +61 2 6288 6916 http://www.xamax.com.au http://www.rogerclarke.com
> Xamax Consultancy Pty Ltd 78 Sidaway St, Chapman ACT 2611 AUSTRALIA
> Visiting Professor in the Faculty of Law University of N.S.W.
> Visiting Professor in Computer Science Australian National University
> Link mailing list
> Link at mailman.anu.edu.au
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