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It's a great store. It's similar to Ikea in that you can go in without doing any research or shopping around and be reasonably sure that whatever you buy from one of their own brands, at any price point, is better quality than the same price point somewhere else. For camping stuff especially, the value is very good. The higher end might be missing but that's almost a feature for the average person to go in and choose from a good or pretty good option.

If you have a bike or something, staff will scan its barcode for you. They generally see you coming and you don't have to wait.

Resistor cost is irrelevant. It's way more likely the device was updated from micro-usb to usb-c by the most junior person and it was missed. Then, any change carries some cost so that design is not changed later.


5 years ago it was really hard to find usb-c shaver. I could only find cheap ones; I got an Enchen boost for about $10 and it has served me well.


I think your suggestion and also the author's are too big for my taste. I carry a US-style 45W GaN charger, a couple of usb-c cables, and an EU adapter (which, off the record, also works for UK outlets so it covers anywhere I normally travel to). I carry this daily and for travel even though I live in Europe as this combination is the same size as the EU version of my charger by itself.

For devices I have a work laptop, work phone, personal laptop, personal phone, headphones, usually a couple other small devices, and a mobile battery. I usually only heavily use my work laptop and personal phone. For phones and smaller stuff, I can charge them from the laptop while the laptop charges overnight so I don't typically wish for a second charger. If your laptop has decent battery life, charging at less than max speed is no big deal (I have two 16 inch MacBook Pros).

Additionally, I've converted most of my old favourite micro-usb devices like mouses to usb-c. A search for "usb-c 4.7kohm 5v female" will give you some options for replacing micro-usb with usb-c, with hobbyist soldering skills.

For a beard trimmer, I got an Enchen boost usb-c model for $10 for travel. It works well and even has ceramic blades but I had to add 4.7k resistors to work with a c-c cable[1].

[1] Cheap devices often omit some 4.7k resistors that tell a usb-c charger to output 5V, so it outputs nothing. This is why some devices work only with usb a to c cables, as usb-a outputs 5V by default. If you can manage to add the resistors to the correct pins or replace the connector with one that has them built-in, you can fix this problem. The difficulty of doing this varies a lot by device.


> and an EU adapter (which, off the record, also works for UK outlets so it covers anywhere I normally travel to).

What type of adapter is this? EU and UK plugs are very different.


I think they're describing how you can force the two pins of a europlug into a type-G socket, if you first stick a screwdriver or key or something into the earth pin to open the shutters.

This will give you access to electricity, but the contact area is much smaller than it's designed for (round pins in a rectangular hole), so using it for anything high wattage will end poorly.

An often overlooked part of the BSA spec for type-G sockets is they're supposed to have a flat surface surrounding the socket large enough to prevent you using the earth pin of an upside down plug to do this.


(Not recommended at home kids) use a key (or, safer, an upside down UK Earth pin) in the Earth hole to open the Live/Neutral shutter - then insert the EU prongs. The width of the EU prongs is handily the same as the UK holes.

Touring musicians do it if venues don’t have convertors.

Doesn’t work if the EU plug needs a live earth of course.


Exactly. Even for this small board, the IC has 0.65mm spacing of the LGA pads. It would be pretty difficult to assemble it without solder mask.

Almost everyone who has the experience of etching a board, or even using a router to automate making one, and also has the experience of ordering a PCB, never makes one by hand again.



It's a shame (in practice, although I get the philosophical idea).

I think the lawsuit chances are very low because FAANG right now depend way too much on LLM being legal, so they would not want to shoot themselves in the foot.


Misumi sells it, and they have an online tool to configure almost anything you want in 3D, including brackets of your choice, fasteners and accessories (like panels, hinges and handles). Then, you can order all of the parts to make your creation with 1 part number.

Makerbeam is also nice, they sell a 5x5mm, 10x10mm and 15x15mm version (normally the smallest cross section of t-slot is 20x20mm). The 5x5mm version is comically small when you hold it in your hand. When you order a set, it comes with tweezers to pick up the screws which are size M1.2.


Most of my "favorited" comments on here are by software people with confident yet incorrect statements (usually by way of vastly underestimating complexity) about one of my domains of expertise.

I can't find it but one of the greatest show HN was a blog post about someone who was annoyed by his inconsistent shower temperature control. From memory, he spent a full weekend adjusting it, taking measurements, making graphs, and proposed "next steps" about prototyping better temperature control with microcontrollers and servo and pontificated about developing a product, of course controlled by software. He skipped the part where a bit of research leads you to the already common "thermostatic mixing valve".


In addition to the other comments, in general o-rings are actually very difficult to use for vacuum sealing. Unintuitively, at least until you have some experience in seal design, lower pressure differentials are much harder to seal than large ones. They depend on the pressure differential itself to form the seal, they don't work like a gasket between 2 faces. This is also why compressing in a v-groove doesn't make them perform better.

Even if you can get an o-ring to seal a vacuum, it will likely only work in the context of applying a vacuum to a system to a desired level, not as a permanent seal.


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