alnwlsn

9 ms·

151.
by alnwlsn 8mo ago
The maker movement probably is a failure if you're an economist. Nothing could be worse for the economy than people buying less domestic products in favor making their own stuff, and sending more of their paychecks to China to get more
152.
by alnwlsn 8mo ago
Of the people I know, about 80% of households have a 3D printer. Now, I'm sure I don't know that many people, but that's a lot more 3D printers than they had a decade ago.
153.
by alnwlsn 8mo ago
I think TempleOS also worked like this, though its certainly better known for its "other" features. edit: I missed it was linked on the above page
154.
by alnwlsn 8mo ago
Veritasium started out as a physics channel, and they've covered a wide variety of physics, math and science topics. They are never afraid of showing you the math, but one of the things I think they are really good at is not losing the
155.
by alnwlsn 8mo ago
This must be the one I remember playing with around 2010. It used to be a java applet and you could draw in it like a paint program to make interesting sounds. After messing with it for a while I could kind of tell what was going on but not
156.
by alnwlsn 8mo ago
For whatever reason, I have an 8" floppy disk with one of these microwave cookbooks on it. Mine seems to be (part of?) one called "The Guaranteed Goof-Proof Microwave Cookbook" by Margie "Microwhiz" Kreschollek. Sad
157.
by alnwlsn 8mo ago
You might only be able to get 8-16MB/s max out of some of those old drives (especially pre-1994), so you probably aren't missing much. edit: whoops, that's bytes not bits per second
158.
by alnwlsn 8mo ago
You might like the ESP32-P4
159.
by alnwlsn 8mo ago
Related - this insane project to build the "most 3D printed" 3D printer [0]. The author has 3D printed mechanical components, motor windings, and a complicated electomechanical "motor controller". The whole thing is inte
160.
by alnwlsn 8mo ago
My #1 way is from impatiently touching the board to see if it's cool enough to touch yet. That sounds dumb and it is. More generally, with iron soldering only the iron and the last couple joints are hot. For SMD, there's more plac
161.
by alnwlsn 8mo ago
Provided you have good eyesight and steady hands, I've mostly found what happens as you get smaller is: - Heating becomes easier. There's no large sinks to take the heat away. It's also easier to overheat things. - You need f
162.
by alnwlsn 8mo ago
The display controller they are using (RA8875 or RA8889) has several hundred KB of internal memory. So you can write to the screen and the image will "stay there" as it were, you don't have to store a framebuffer or keep writ
163.
by alnwlsn 8mo ago
I know that the Rectified Lunar Atlas [0] was done this way, but it used normal telescope images of the moon from earth. [0] - https://sic.lpl.arizona.edu/collection/rectified-lunar-atlas
164.
by alnwlsn 8mo ago
If the batteries were rechargeable at all (some radio 'A' batteries [0] were), they could have been recharged by a small wind turbine [1]. [0] - https://en.wikipedia.org/wiki/Vacuum_tube_battery [1] - https:
165.
by alnwlsn 8mo ago
I don't think it should be obvious. If you could measure spectra, that would tell you that starlight and sunlight are the same, but you could still think they were very tiny suns that were near. You would need to measure parallax to kn
166.
by alnwlsn 8mo ago
These are usually marketed as "atomic time" or "atomic clock" here in the US.
167.
by alnwlsn 8mo ago
Depending on how dark your room is you might get by with an ordinary but bright LCD screen and a camera lens. There's a pretty common 240x240px, 1-inch square TFT display on amazon or other usual places you might start with.
168.
by alnwlsn 9mo ago
I remember doing this too, a little bit later. It would churn on the disk for minutes on end, and usually fail. I think I got it to work once or twice. Floppy disks and drives were plentiful, but scrap in those days. So of course those were
169.
by alnwlsn 9mo ago
One of the Hackaday writers does a PCB review series. It's probably worth reading through to learn from past mistakes.
170.
by alnwlsn 9mo ago
Reminds me of the 2-hole "snake eye" or "pig nose" screw heads you sometimes see in bathrooms or elevators. I have several of the bits for these since they come with every one of those n>20 -piece screwdriver bit sets
171.
by alnwlsn 9mo ago
You don't use CNC for making a billion individual screws. These would have their heads formed by being stamped in a die, just like phillips, robertson, security torx or any other screw heads.
172.
by alnwlsn 9mo ago
All the open source designs from 10 years ago still work, not like they went away.
173.
by alnwlsn 9mo ago
Surely that would be a cleanroom-style bunny suit?
174.
by alnwlsn 9mo ago
Eye of the beholder, I suppose. I like KiCAD's UI much more than Altium (but to be fair, I hate Altium).
175.
by alnwlsn 9mo ago
Speaking of which, I have yet to see a consumer battery charger that isn't incredibly cheap feeling. Even ones for charging different chemistries or that let you set current rates are a mess of low-quality molding and cryptic button pr
176.
by alnwlsn 9mo ago
Designers have a choice in lithium-ion though. 18650 is is pretty large cell but there's 14500 which is AA sized or 10440 which is AAA sized. They make versions with the usual battery "nub" rather than the flat faces for spot
177.
by alnwlsn 9mo ago
I could have sworn I remember hearing about some historical satellites involving wood in some way and I guess it was this: https://en.wikipedia.org/wiki/Fanhui_Shi_Weixing >The successful recovery of an FSW-0 recove
178.
by alnwlsn 9mo ago
Some might say he gets too much credit. For example this Woz quote “It was the first time in history anyone had typed a character on a keyboard and seen it show up on their own computer’s screen right in front of them.” seems pretty believa
179.
by alnwlsn 9mo ago
It depends. I use Solidworks all the time but I think OpenSCAD was a great choice to make this part: https://github.com/settinger/selectric_typeballs A bit like how you can edit images in MS Paint, Python, or Photoshop
180.
by alnwlsn 9mo ago
You don't need to learn BASIC first but it might be helpful for bootstrapping at the beginning. Since it's included in the computer you can PEEK and POKE memory locations from BASIC and get a feel for how memory and machine code w

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