negative_zero

Joined 8 years ago

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648
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105
Member since
Feb 28
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Recent submissions

Comment · 18 days ago
Agree on your comments about amateur hour.

I've worked in payment terminal hardware security and this is not surprising to me at all.

This attack on the Ledger wallets would definitely rate as amateur in terms of sophistication in that world.

Comment · 18 days ago
Thanks for those links I will check them out.

I hope it's at least "probably fine". I've seen some pretty shoddy electrical work in my lifetime (including new installs) and am now of the mind that the deep-defense-in-depth of electrical safety we have these days is to also "cope" with shitty electrician work.

Comment · 18 days ago
I would contest it's without incident. The US is higher risk since it uses 120V => the currents are x2 higher and US electrical safety standards are an eclectic mess of: world leading and 3rd world.

Not picking on the US though. These panels in their current incarnation, are lowering the level of safety of electrical everywhere.

This is all just my opinion though. A lot of my background is in compliance. I've been frustrated by some obvious electrical safety advancements that are STILL not being implemented. I also have first hand experience with many many signed off electrical systems which were death traps. This all biases me heavily towards not compromising on electrical safety. But maybe I am overreacting.

Comment · 18 days ago
In my view it's more that: electrical safety has advanced to it's current "version" and allowing these panels is a regression in safety. There's already plenty of products/theoretical-products that are banned and/or tightly controlled for electrical safety sakes (suicide cable is the poster child).

To use your car analogy, we're not banning vehicles. We're disable one of the airbags when enabling fuel economy mode.

Comment · 19 days ago
Yup. Worst case scenario is indeed mixing generation and load on the same circuit. And you have to assume that some number of people will manage to do that and create a fire hazard. To connect it safely, you need to know the circuit layouts and the rating of the cables. This is not something solvable with a safety sticker and safety instructions. A huge amount of effort has gone into making domestic electrical installs as inherently safe as possible and these panels are a back door to that.

Don't get me wrong, I think they're a spectacular idea, especially for renters. But you'd need an electrician to check the circuit and maybe even have a special balcony-solar-plug to prevent people plugging in too many panels in the wrong locations.

Quick edit: Random idea. I guess if the panel could communicate with the RCBO it's connected to and that RCBO can dynamically alter it's trip current could also solve it. But again, that's an electrician call and new thing installed.

Comment · 19 days ago
You cannot rely on that limit though. People WILL plug in more than that. The whole system has to be kept inherently safe. All other concerns are solvable, but I don't see how you solve this, bar having a special balcony-solar-socket installed where an electrician has verified that it will be safe in all scenarios.
Comment · 19 days ago
EEE here. I've not looked at these in detail myself as they are illegal in my country. Off the top of my head, the big problem I see is that, since you are injecting power BEHIND the circuit breaker an end-user can overload a circuit.

i.e You have a circuit with max current 16A; clever end-user plugs in 3 x 800W panels into different sockets BUT they are unfortunately on the same circuit; now 26A can be potentially drawn through a single cable IN THE WALL without tripping the breaker. This is a BIG fire hazard.

And you can't wave this away with instructions. It has to be 100% impossible for an end-user to do this.

Comment · 1 month ago
Odd. Google Pixel 7 with GrapheneOS here. OsmAnd works perfectly fine for me without disabling any exploit protection options.
Comment · 1 month ago
Now get it through compliance :)
Comment · 2 months ago
Comment · 3 months ago
As usual for these posts. No certifications. No proper markings. Probably non compliant. Will probably go unpunished.
Comment · 3 months ago
Modular Approval is an FCC thing only. CE doesn't have it.
Comment · 4 months ago
It always seems wild to me how, in the US, something like the grid is just a wild west.

"ERCOT said it is reviewing the test failures and drawing up plans to protect the grid from disruptions."

Why are they even allowed to connect? / Why are they not kicked off? / Why aren't they being forced to add their own grid inertia?

Comment · 8 months ago
Any chance of having a finger print scanner on the back of the phone?

I personally really dislike the screen ones. They're slower, less reliable and the location is unnatural.

Comment · 1 year ago
So if I am a small open source developer or run small website, this could be added to my AI scraping defences?

If something like Nepenthes added poisoned pages to it's tarpit then a small number of users can just poison all LLMs?

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