alnwlsn

23 ms·

361.
by alnwlsn 2y ago
Compared to plain wires with your intended voltage and your choice of any 2-pin connector, USB-C is not so basic. SMD resistors imply you have a PCB or something to put them on. Which means that your power connector is no longer just a coup
362.
by alnwlsn 2y ago
Where do you even get a cable like that? If the answer is "they made it themselves" why go with a USB-C connector then? Seems like any old barrel connector would be both cheaper and easier to work with. Unless it was really to put
363.
by alnwlsn 2y ago
I was somewhat disappointed to learn that there's a lot less Monty Python on Youtube than there used to be. You can still find the Cheese Shop, Dead Parrot, or Silly Walks, but about 15 years back it seemed like nearly every sketch fro
364.
by alnwlsn 2y ago
Don't forget about lead in brass and free-machining steel. Got a normal metal? Now it has lead.
365.
by alnwlsn 2y ago
At least leaded soldering wire is mostly contained in a large chunk, but I really don't like leaded solder paste. Which is like leaded peanut butter, and easily spread around. All the new parts are designed based on a lead free process
366.
by alnwlsn 2y ago
No, but they are dead simple aren't they? Charging them is easy. They can handle super high discharge rates no problem. Construction is simple, only lead, sulfuric acid, and plastic. The materials are cheap, abundant, and recyclable. T
367.
by alnwlsn 2y ago
Being on top of the sand dunes is truly bizarre. It was so bright that I could see perfectly well without glasses (bright light = small pupil diameter = small aperture = high depth of field), and is pure monochrome white for miles in every
368.
by alnwlsn 2y ago
This reminds me of a news piece from my area about 10 years ago. A field was to be mowed, and they were considering options. They could get some high tech self guided lawn mower, or they could let a herd of goats graze on it. They went with
369.
by alnwlsn 2y ago
One time when I was very young, I was given some paper to draw on. It looked and felt like normal paper, but when you drew on it with a marker, it would swell up under the marker line creating a raised area. Putting a piece in water reveale
370.
by alnwlsn 2y ago
3000psi gas is the easy way. You just need a couple valves instead of a bunch of insulated stuff that has to not freeze up at -200C.
371.
by alnwlsn 2y ago
You should have been able to get a kit that controls relays with a parallel or serial port from Radio shack in 2000. Then it's just 2 wires to the switch.
372.
by alnwlsn 2y ago
It's almost 2 chips. One is just a USB-serial IC! But you didn't count the SD card, so you're up to 3 again. Total pin count is so low on this, I'm very tempted to make a dead bug version.
373.
by alnwlsn 2y ago
I'm really surprised that "the first x-ray taken in space" has occurred this late in the game, given what we know about what being in space on the longer term does to you.
374.
by alnwlsn 2y ago
Patently false. https://www.archives.gov/personnel-records-center/fire-1973
375.
by alnwlsn 2y ago
Somebody showed me a text-to-CAD AI tool recently, and I can't help but feel that whoever made it doesn't understand that people who use CAD aren't trying to solve the problem of "make a model of a rubber duck" but
376.
by alnwlsn 2y ago
Here's a video of one being restored: https://www.youtube.com/watch?v=3bjdrKCmiE0 The keyswitches are foam and foil, and the CRT really is a blue/white color.
377.
by alnwlsn 2y ago
Could be just about anything, from thermostats to CPAP machines to SFP fiber transceivers. Anything that needs to be just a little bit smart (but usually not internet connected) can have one. For hobbyists, the ATMega328P was the go-to for
378.
by alnwlsn 2y ago
I've been meaning to give this a try for a while - I have several of the "supported" systems and I've designed a couple of my own simple Z80 computers over the past few years. Being able to program AVRs from a scavenged
379.
by alnwlsn 2y ago
It seems to be this one taken by Louis Daguerre in 1838: https://en.wikipedia.org/wiki/Boulevard_du_Temple_(photograp...
380.
by alnwlsn 2y ago
I've thought about the "hundreds of years" problem on and off for a while (for some yet to be determined future time capsule project), and I figure that about all we know for sure that will work is: - engraved/stamped in
381.
by alnwlsn 2y ago
I've heard it said that the terrible nests are more to stop the eggs from rolling away. Apparently it was easier to evolve the ability to go get a stick than make square eggs.
382.
by alnwlsn 2y ago
Related, and a personal favorite of mine: DEF CON 18 - Jason Scott - You're Stealing It Wrong! 30 Years of Inter-Pirate Battles https://www.youtube.com/watch?v=QCAL_YgYiP0
383.
by alnwlsn 2y ago
I always wonder when people say things like that. What's the first thing a humanoid robot with human like intelligence do when you tell it to make a copy of itself? Does it set up a backyard forge and start to cast new arms and legs ou
384.
by alnwlsn 2y ago
I'm sure I found the same sources you just did. USR101 is surely not a ROM by this [0] schematic because the speaker audio goes directly to one of the pins on it - that doesn't seem right. I guess enough signal makes it through T1
385.
by alnwlsn 2y ago
According to this [0] schematic, there is a relay present. Looks like it's job is to be the hook switch for the phone. The recording sounds like the characteristic ping of a reed relay to me, so it seems like it's hanging up and t
386.
by alnwlsn 2y ago
Or, in the pre-USB-PD days, you do this[0]. Only 30 USB ports required. I swear I remember this being a toaster instead of a hot plate, but I guess you would need around 300 USB ports for a toaster. [0] https://hackaday.com/
387.
by alnwlsn 2y ago
The most dangerous thing about this is that the geiger tubes run at about 400V, backed by a small capacitor. If you touch it, it will feel about like getting hit by a bug zapper. Apart from that, yes, they are passive detectors.
388.
by alnwlsn 2y ago
It's things like this that remind me there's always a little more to discover. I've built a number of those SBM20 geiger counters but I've never come across this muon detector design before. Seems to be a pretty well kno
389.
by alnwlsn 2y ago
I only learned somewhat recently that a lot of (or all?) Magic Eyes are meant to be parallel viewed instead of cross eyed. The difference was pretty impressive the first time I saw one correctly.
390.
by alnwlsn 2y ago
For that matter, there are a couple of "Magic Eye" videos out there, which look like TV static until you cross your eyes enough.

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