This gets such a huge thumbs up that I had to scroll up and reread it to make sure this wasn’t my own post from a revived thread from last year!
I’ve been using a pixelblaze with a long string of cheap 2812 LEDs on my Christmas tree for three years now with tons of compliments from neighbors.
I’m an embedded software guy, and every year I mean to dig in and try roll my own, or do something clever with an RP2040 board (also a shoutout for the Pimoroni Plasma), but the demands of life and “get the light show started” mean I keep using the Pixelblaze.
I even upgraded to their newer versions last year, and used some of the smaller ones to make some LED tutus for my girls that synced pattern with the tree (the tutus were synced with each other for a Christmas show, but it was trivial to then add the tree for fun afterwards).
The mapping is huge for the wow factor, and the pixelblaze makes it so much easier to get something fast and good enough.
There’s so many community-shared patterns to choose from, and it’s been easy to make small modifications to look better once mapped to a tree, though most work as-is.
My project I won’t get done this year is to try to make some calibration patterns and use ChatGPT to analyze some photos/videos to make a 3-D map, but I’ll realistically probably end up with the vaguely-triangular 2-D map again; I can get it done in about 30 minutes now.
The following is a couple years ago. I think last year I was up to 1100 LEDs and the mapping was a bit better, but I didn’t take good videos.
Apple should hire a couple hackers to create “end-of-life” firmware for their obsolete devices; give them new life as super-specialized devices. Part green program, part customer delight, even some wacky art projects.
Maybe if an iMac doesn’t have a video input—have it boot as an AirPlay-only monitor.
I’ve got 2 old EOL appleTV boxes sitting in a drawer—again, one last firmware update to make them dedicated AirPlay receivers.
Take my 2011 MacBook Air and make it a dedicated Notes machine/word processor—all it does it run notes and sync with iCloud.
Obsolete iPad picture frame is an obvious one.
They can work on the “Reuse” side of the 3R’s of waste reduction (with reduce and recycle, right?)
PS, I’m available, 9 years embedded SW experience ;)
I have an obsolete Epson scanner (an expensive one!) and an iPad from 2012. Neither are usable anymore, officially. The iPad won't install more than a handful of apps from the App store, and both Epson and Microsoft refuse to supply drivers for old scanners even though I'm sure they're little different to the ones they use for the latest model.
So I grabbed a raspberry pi, installed Apache, PHP and phpsane (heavily hacked) and now my scanner has an iPad for a control panel, and I can scan dozens of documents without turning on my computer. Then I can access the whole thing across the network (samba file shares for docs, or the scanner interface).
My SIL who was junking the scammer after upgrading to Windows 11 thinks it's a better solution than the new scanner she bought to replace it.
Such hacks shouldn't only be possible with years of tech experience though.
> "Apple should hire a couple hackers to create “end-of-life” firmware for their obsolete devices; give them new life as super-specialized devices."
They've actually done this in a few cases! There's a whole generation of obsolete Airport Express Wifi base stations that got a final firmware update which gave them AirPlay 2 functionality. Now they're still quite sought after as a device to make old stereos/speakers wirelessly compatible with the latest Apple devices. Especially if you have stereo eqipment that can take optical (TOSLINK) audio input.
Oh nice. I didn’t know about the Airplay 2 update, but I’ve been using an old Airport Express to airplay for this old audio receiver I have for ages. And I’ve got a spare I hold onto in case this one ever shits the bed.
And while we’re on the topic — its amazing how many hifi audio receivers I see being thrown away, stuff that is still top-of-the-line for sound quality, but is now considered “obsolete” purely based on connectivity options — ie not having a direct bluetooth/wifi ability, when one could easily buy a separate device for that and hook it up.
I build quite a bunch of Pi e.g for multiroom setups:
- some output directly via the jack (which is okay quality wise as long as you don't push the gain/stay at line level, the device downstream being the one doing amp)
- others have an iqaudio hat (either DAC for when the internal jack doesn't cut it or people want 24/192 or Amp+ to drive passive speakers)
And I didn't notice til recently but the Amp+ has onboard headers for balanced output, so with a bit of soldering one can add, say, XLR to the thing.
Then throw in some room eq via an impulse response and you get a device that rivals off the shelf stuff that cost one to two orders of magnitude more, plus you get to not throw away perfectly good hardware.
Similarly I've smartified a crapton of dumb+ devices with a bunch of Shelly stuff (notably Plug S are dead easy): washing machine, water heater, mechanical ventilation, light switches, thermostatic valves...
+ And in a few cases smart ones too, except I compared what I can do with the first party offering and my hackjob, and it's nuts that not only the first party shit is never local when technically it could totally be, but that my hacked-together BS is more useful than the first party option, on top of being 100% local.
Fun thing: I bought a board + enclosure for an iPad screen from AliExpress. I had a 2011 iPad to which I had no practical use. I did have to break the iPad (RIP) so I could detach the screen, but in return I got a really nice crisp display with mini-HDMI ports, cool!
I have a 2011 iPad that I watch videos on in the Gym. It's not everything it used to be, but I can stream videos on Prime, though it had a tendency to crash on offline Netflix, and I watch downloaded videos in VLC.
So the US sells some bonds, then slips a couple trillion into a brown envelope to buy Baja California from Mexico, then “lease-to-own” it on very favorable terms (0 down, 0% APR, 150 years) to New Taiwan, or Formosa II. Uproot TSMC and an entire culture and move them over, then let China wave the flag over the mound of dirt left behind. Pencil them in to NAFTA and watch the chips flow over to the new iPhone plant outside Mexicali. Tijuana to Ensenada remains Mexico and is a buffer between them and the USA, and the night markets there are the envy of all food-eating people on the planet—-I can’t wait to try the albondigas soup dumplings.
I think AirBNB has the infrastructure to upend the Realtor market. If they just add an “AirBNB listings” buyers can search and scroll through pictures. They’d have to show exact location, but otherwise pretty much the same as what’s there. Seller pays an upfront listing fee, gets referrals for staging and photos if they want to stand out.
Simply add a “30 minute viewing” rental for $25-$50 (AirBNB keeps $10-25), available to registered users (with already-verified ID). Maybe rent the homeowner a bundle of cams for viewings for extra security.
If a buyer is really interested, have an above-market-rate nightly rental—I’d love to spend a night in a house before paying a million+ dollars for it (without the cams, of course). Maybe half refunded with an offer made thru AirBNB Listings; full refund with an accepted offer (again, less AirBNB fees). Maybe partner with Redfin or Zillow to set prices, provide school and property info, and finish the deals. Do it all cheap enough to make it worth sellers forgoing an MLS listing; should be a flat fee, a tiny fraction of 6% in most cases.
A startup couldn’t do it, but AirBNB has the name recognition, and the pieces already there, right? I’m available for consulting, or send me a fruit basket if it all works out, a nice one, without a lot of melon.
I keep intending to reinvent my own controller with an RP2040, but life gets in the way, so for the second year in a row, I’m using a Pixelblaze to control the 950 LEDs on my Christmas tree. It’s a continuous string (well, 19 strands of 50 lights connected), put on the tree in a zigzag pattern and manually mapped to a vaguely triangular 2-D shape. The patterns are mostly as downloaded from the Pixelblaze repository.
I’d highly recommend Pixelblaze for getting a fairly complex setup working quickly.
Although I know financial markets are extremely complex and driven by human psychology, I can’t help thinking about thinking about it in terms of classical control systems.
Do you want a smooth input, or an abrupt step input? Psychologically, I’ve got to believe there would be a quicker response by consumers if rates shot up overnight vs “boiling the frog” with a gradual increases.
In simpler dynamic systems, you get a faster response with overshoot and ripple, maybe this would be similar? But would it be better? I wish the article author had been able to find more discussion by economists talking about the potential effects.
Could you pull out of a recession or pop a forming bubble in months instead of years? Maybe it could lead to a smoother Macro-macroeconomics. But maybe the overshoot is too much; maybe the system is just too chaotic to control effectively.
Financial markets dislike abrupt changes, but I think if the central bank was perfectly transparent about their goals and responses (“To maintain a annual growth rate of 1.9%, Fed decisions will be made based on a PID controller with the following parameters…”), some smart financial engineers should be able to account for the rapid changes in their own models. Maybe there’s even some profit potential anticipating the overshoot and ripple that could provide some dampening effects.
I’m sure I’ve completely Dunning-Kruger’d this and millions of lives would be ruined, but since I’m not the Fed Chairman, we’re all safe.
After growing up on a Mac SE and going off to college with a Centris 650, I went through a string of windows PCs until the 2013 MacBook Air brought me back into the fold.
I still use the 2013 MBA almost daily—mostly as an external keyboard and screen for my iPhone notes, but it really slowed down with Mojave, so I’m trying to decide whether to pick up a cheap replacement M1 model now, or wait for sales on the M2. I think I can hold out a little, but won’t quite make the 10 year mark.
BTW, the c. 1993 Mac Centris was able to boot up last year (at 28 years old!), and thanks to an Ethernet adapter I dumpster-dived from work in the early 2000s, I was even able to get online with it without any extra configuration. Netscape Navigator doesn’t do too well with modern websites (and probably made for a baffling entry in some server logs), but I could at least load the Dole/Kemp ‘96 site.
For the first question, I ended up using this trick for a video editing app on Android phones about 10 years ago in order to cut video together on low end, out of date (Android 2.3) phones. They couldn’t handle video compression in a reasonable time and we didn’t want to upload/download to process on a server.
The point of the app was to sync the cuts to music cues, so each clip had a defined length. I ended up doing it all through file manipulation. You can cut into a video file starting at any arbitrary I-frame then trim it to the desired length. I would cut the input videos down to size then concatenate the files, replacing the audio with the new soundtrack at the end.
It worked great, only took a few seconds to create the final edit. Of course you couldn’t overlay text or filter video, but I still think it was a valid solution.
With the requirement of starting each clip on an I-frame, there was some imprecision in where your cut would actually start—an arteur might have a problem with their masterpiece being butchered that way, but it would certainly work well for some special cases like efficient distribution or being able to show a diff that a video was unaltered outside of timing cuts.
I’ve been using a pixelblaze with a long string of cheap 2812 LEDs on my Christmas tree for three years now with tons of compliments from neighbors.
I’m an embedded software guy, and every year I mean to dig in and try roll my own, or do something clever with an RP2040 board (also a shoutout for the Pimoroni Plasma), but the demands of life and “get the light show started” mean I keep using the Pixelblaze.
I even upgraded to their newer versions last year, and used some of the smaller ones to make some LED tutus for my girls that synced pattern with the tree (the tutus were synced with each other for a Christmas show, but it was trivial to then add the tree for fun afterwards).
The mapping is huge for the wow factor, and the pixelblaze makes it so much easier to get something fast and good enough.
There’s so many community-shared patterns to choose from, and it’s been easy to make small modifications to look better once mapped to a tree, though most work as-is.
My project I won’t get done this year is to try to make some calibration patterns and use ChatGPT to analyze some photos/videos to make a 3-D map, but I’ll realistically probably end up with the vaguely-triangular 2-D map again; I can get it done in about 30 minutes now.
The following is a couple years ago. I think last year I was up to 1100 LEDs and the mapping was a bit better, but I didn’t take good videos.
https://youtu.be/hu-RQx_NpAY?si=BMYbafbPAn2XAlU9