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So what is the law that requires UL, ETL or other NRTL for power supplies in network equipment?

If such a law exists then how does Ubiquiti get away with selling unlisted product in North America?

Most networking equipment doesn’t have a UL or other NRTL listing. I don’t think any Ubiquiti product includes a UL mark. Even their power bricks and devices that take line voltage lack a listing.

Even if a product does have a listing it’s prob just for the power supply and not for the PoE circuitry.

As long as the laptop has Thunderbolt 3 or 4 you can use a thunderbolt to PCIe enclosure with a SFP28 network card in it. It wouldn’t be very portable but neither is a fiber optic tether.

I picked up an inreach mini a few years back for emergencies while backpacking. I’m gonna get rid of it and use Apple SOS instead. Family being able to track my location and being able to contact emergency services is good enough for me. I kinda like the idea of going back to not being able to contact or be contacted while hiking but retaining an option for emergency service if something extreme like a broken bone or snake bite occurs.

Prop 13 applies to both residential and commercial property. Also new home construction would be assessed at the currrent market value. So no difference from a tax perspective for the town/city.

What I don’t understand is why cities like Menlo Park, Palo Alto and Cupertino allowed to add office spaces for 100,000+ jobs but not required to add a similar number of residences for the people who work those jobs?

Atherton isn’t building a tech campus (or any office/retail for that matter), why should it be forced to build housing to accommodate people who work in nearby towns that choose to prioritize commercial space over residential?

Even just adding a little inuslation to a pipe will drop the heat loss down to a few watts/ft when dealing with a pretty large delta T. If you’re using 20k+ watts to heat a home the losses on the pipe are minimal. And I’m guessing these homes are all pretty close together. Not a mile apart.

Intentionally deflating someone’s tire is also considered criminal mischief in most states.

This Toyota battery pack is 8.7 kWh compared to 13.5 kWh in a Powerwall. The Toyota pack can produce slightly higher (I assume sustained) output at 5.5 kW compared to 5 kW on a powerwall. But there is also no mention of the peak power output which for a single powerwall is 7 kW. Also no mention of pricing and if you can connect multiple batteries in parallel to increase total storage and output, which you can do with multiple Powerwalls.

I’m all for home battery backup but no one has come close to meeting or beating what Tesla has offered for years.

This is my exact reason for going Logitech keyboard and mouse. I have a work Mac and personal PC. With a thunderbolt dock I can use either one at my desk. I don’t have to fiddle with pairing anything, just plug in the computer and the keyboard and mouse show up. If I travel then I just pack my mouse and pair it with my laptop via Bluetooth while away.

I’ve done a lot of backpacking and tried various approaches inluding solar panels but I’ve settled on bringing a good 10,000mah rechargeable usb battery pack. With this I can keep my garmen inreach mini, iPhone and headlamp charged for 5-6 days on the trail with a battery that weighs 6oz.

I’m under the impression the concern is more about smoke being emitted during a fire which would then filter into a room and obscure escape paths.

This is more of an issue in a commercial building where you have lots of people who need to move through potentially narrow escape routes than it is in a home where every major room will have multiple means of egress.

“Another auction house managed to find the head in a catalog of items from a German museum in the 1920s and 1930s.” Per the article it was looted from a German museum.

How the german museum acquired it originally is anyones guess. But it’s possible it was legally acquired at some point over the past 1900 years.

Yeah because it’s so easy to verify creepage and clearance requirements with a bunch of squiggly lines all over the board… Add to that thermal properties and temp rise calculations. There’s a heck of a lot more to PCB design than just an “electrical reason”.

Funny I wish my M1 MBP ran hotter. It’s uncomfortably cold in the mornings.

Even if the goods are ultimately destined for California they still will likely enter the US through Texas. It just doesn’t make sense for a truck coming from Laredo or Reynosa to snake it’s way accross northern Mexico.

If they include a USB A port then it forces users who have USB C cables to purchase adapters and results in more e-waste.

Is there loads of space in the display? Looks like apple is packing quite a bit into a slim display profile. Not to mention, ports with different dimensions/heights require additional fixturing and likely additional PCBs or connectors to work. It’s not as easy as slapping a few more ports in the display. Sure a company the size of apple can add more ports. But it’s far easier to line up 4x usb C connectors. And likely makes for less ewaste.

Personally I’d rather have an RJ45/Ethernet port built in over USB A ports. The monitor is going to sit on a desk it might as well be hardwired to the local network.

At this point I see no reason to continue putting USB A ports in products. Continuing to include them is only going to prolong the transition to USB C. The great thing about USB is the protocol is the same for different connector types so you can use a $5 adapter to easily plug an older USB A device into a USB C port.

Where are these available? I just checked all the links on Nvidia's webpage for a 3060 and they are all out of stock...

What’s industrial home control?

It’s not picking sides it’s a result of economic sanctions. How are financial transactions going to clear when Visa/MC can’t transfer money in/out of Russia.

There also just aren’t many home use cases for >1gbps networks.

For each kwh you feed to the grid you get a credit for the value of that kWh during that time. Say off-peak is $.20 and peak is $.40 (this is an exaggeration but makes the math easy). You would need to feed 2 kWh to the grid during off peak to cover 1 kWh drawn from the grid during peak usage. On top of this there are non-by passable charges for every kWh drawn from the grid regardless of any credits on your account.

This is my complaint too. There needs to be a way to share airtags with family members so they can also located missing items and they don’t get spammed with alerts. Without this option it’s just creating alert fatigue and will make users discredit real alerts.

The UK Type-G plug design is very well thought out. The ground pin is first to make/last to break and it opens a cover on the live terminals when inserted to prevent accidental contact to live components. The power pins are recessed so you can’t accidentally (or intentionally) make contact with life parts of the plug is only partially inserted. The plugs also have internal fuses (although I’m not sure if this is always the case).

The only negative is the plug is physically larger than plugs used in other countries. This makes them take up more space in a bag/backpack. And it’s harder to cram lots of sockets into a small space like a power strip.

TRR won’t help if you deliberately half insert a plug and toss a penny in as suggested in this “challenge”. Also fwiw US residential power is 120/240V. Actual voltage can vary but should be within +/-5%.

The UK has the best designed plugs IMO but they sure are clunky as a result.

Maybe because not everyone has the option to get vaccinated yet.

Or get a loan at a very low rate using equity as collateral thereby avoiding income/cap gains.

It takes at most an hour to setup the tooling on windows. My first intro into embedded development was setting up the esp32 IDF. While there may be simpler platforms out there, it’s not overly complex for anyone doing embedded development.