gubby

10 ms·

1.
by gubby 3y ago
Interesting idea, I suspect it isn't possible with the existing connector. You either need to increase the voltage or the current. The new 240W spec is 5A and 50V. Assuming 5A is the thermal limit of the connector and that can't c
2.
by gubby 3y ago
> There's not a single smart plug on market that won't connect to cloud to control plug from anywhere Look at Shelly devices, they are exactly what you are looking for (in no way affiliated)
3.
by gubby 3y ago
Interesting point, but of course it’s not possible to create a platform with an average win rate of 80%.
4.
by gubby 4y ago
Grounding isn't really about dispersing energy over an area, it's about creating a situation where faults can be detected and circuits automatically opened to prevent shocks or fires. It actually gets very involved to reason throu
5.
by gubby 4y ago
Very often with contract law there is mostly no such thing as 'knowing a claim is not legally valid'. A lot of contract law is established by precedent, meaning in those cases nobody including the judge knew the enforceability of
6.
by gubby 4y ago
I suspect (IANAL) that in a sense, it already is, in that anybody testing this in court would deny the existence of any form of contract acceptance, and that would be the end of it.
7.
by gubby 4y ago
And that heat ends up at the worst possible place, on the junction itself, meaning the device has to also work to remove it.
8.
by gubby 4y ago
For an article about a specific scientific concept (the proportional land use for different types of generator), it’s surprising they actually got that concept wrong in all their examples: “These can have a small land footprint of just 8m2
9.
by gubby 4y ago
They look identical to me too, but I know that I can perceive RGB hues.
10.
by gubby 4y ago
This has been true of OSX, especially since around 10.15. The performance degradation of the upgrade to 10.15 from 10.14 was so immediate and severe that I reverted it.
11.
by gubby 4y ago
It only had itself to blame
12.
by gubby 4y ago
And the atrocious disregard for performance over the last few years. My 2014 OSX 10.14 home Mac Mini is so much faster and more responsive than my 2021 OSX 12.4 work Mac mini (with no notable difference in features) it is difficult to con
13.
by gubby 4y ago
For some types of power supply, not having a proper ground can dangerous for reasons many people don’t realise. It’s not just about fault currents ‘flowing to ground’. Should just the supply neutral become disconnected, such as during high
14.
by gubby 5y ago
Interesting observation, yes, power might restrict the deployment as much as running e.g. cat5 to a fixed camera install. A decent PTZ can easily see over that kind of range - some of this stuff can see for km in the distance: https:/
15.
by gubby 5y ago
In response to the comments of the form "just install PTZ cameras", I have done an installation like this for a modest-sized site, and it is extremely difficult and time consuming (+ expensive) to install enough cameras to cover t
16.
by gubby 5y ago
Agreed. As an existence proof, the optimising compiler for language X could realise that a for() loop that uses 95% of the actual runtime CPU has no side effects and can be removed. There may be some feature or property of language Y that m
17.
by gubby 5y ago
1440*2 different pre-rendered videos I assume.
18.
by gubby 5y ago
I think the key conceptual thing that's difficult to grasp is the propellor's interaction with the wind. Forgetting the speed of the car vs the wind for a moment, the propellor is arranged so it is trying to push air into the wi
19.
by gubby 5y ago
> Americans represent ~4% of the world's population. About 32% of Americans have graduated college. ALREADY I'm part of ~1% of the world's population [...]. FYI, other countries have effective college/university progr
20.
by gubby 5y ago
> Basically, in the EU, UK and Russia I can't even reconstruct your database piece by piece. You are entitled to create a similar database based on your own efforts or research. So, you could walk the streets of London with an iPa
21.
by gubby 5y ago
What do they feel like for you? I’ve had a CO2 sensor in my office for a long time, and don’t think I can tell the difference between 500 and 1500ppm.
22.
by gubby 5y ago
I personally don’t understand the claimed need for such high bandwidth for video calling and general business use. My work laptop has forced software updates, so at the start of lockdown, to protect my home internet connection I hard capped
23.
by gubby 6y ago
Another scummy website that hijacks the back button. I wish there were a way to block domains from the results I see on HN.
24.
by gubby 6y ago
Both PCs and fan heaters are 100% efficient at producing heat.
25.
by gubby 6y ago
In my view the audiophile £500+ Ethernet cables are more than borderline fraud.
26.
by gubby 6y ago
Obligatory: https://xkcd.com/1150/
27.
by gubby 6y ago
I have been gradually installing Shelly relays and dimmers in my place for some time, and they are excellent. They have a fully open and documented REST API, a simple but effective local web interface, and any Cloud connectivity is complete
28.
by gubby 6y ago
In practice a lot more since people don’t use their full connection 100% of the time.
29.
by gubby 6y ago
An instantiation of me from a backup, however accurate, would be no use to my sense of having survived as I would have ceased to exist and not even be aware of the copy.
30.
by gubby 6y ago
FYI, this query took 81 seconds: select count(*) from trips where fare_amount > 0 Presumably this is Hacker News load?

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