mitxela

This reminded of this other clock project: https://mitxela.com/projects/precision_clock_mk_iv Also: I reckon the closest best-value watch alternative that ticks most(?) of the author's boxes is the Casio GW-M5610-1ER, so long as you are inside a radio-controlled time area.

This kind of thing can be mitigated by not publishing a page/download for every single branch, commit and diff in a repo. Make only the HEAD of each branch available. Anyone who wants more detail has to clone it and view it with their favourite git client. For example https://mitxela.com/projects/web-git-sum (https://git.mitxela.com/)

Speaking about small led panels, I also recommend the "Fluid Simulation Pendant" from mitxela: https://mitxela.com/projects/fluid-pendant

If you like this, you'll also love Mitxela's fluid simulation pendant [0], and likely all of his work! I'm consistently astounded by how informative and enjoyable his stuff his. He shares so much, so freely and it's so well produced, with a lovely voice to boot. Inspirational! Watch his vids, read his write-ups or both! We need more people like this. [0] https://mitxela.com/projects/fluid-pendant

(2017) Also worth a nod toward @mitxela’s gorgeous and absurd Precision Clock series, the latest of which pretty much nails the 7-segment elements TFA references… https://mitxela.com/projects/precision_clock_mk_iv Discussed here 1 month ago, 532 points, 130 comments (https://news.ycombinator.com/item?id=44144750)

I of course don't know your specific circumstances, but nonetheless I'd like to recommend you the author's own take on their work described in a rant titled "Spare Time and Hard Work". It's available here: https://mitxela.com/rants (unfortunately It's not possible to link directly to it so you'll need to scroll a little bit down to find it) I personally like coming back to it from time to time, since it's inspiring in it's own way for me.

The writeup page is also definitely worth taking a look at: https://mitxela.com/projects/fluid-pendant

I didn't realize this was the same creator of the tiny LED matrix earrings. I love the attention to detail in the work and the article. Super interesting! https://mitxela.com/projects/ledstud

See also the CH32V003 [0] (more expensive variants also available), a neat, cheap and standalone RISC-V with plenty of modern & flexible peripherals, good package options, single wire debug and an open toolchain [1] for ~20c per. Mitxela has a great article on them [2] and I totally agree they have a lot of the same joy & simplicity of the ATTiny - but with the added bonus of lots of interesting DMA controller misuse! The peripherals have a very STM feel (in a good way) which perhaps isn't surprising given WCH's history. 0: https://www.wch-ic.com/products/CH32V003.html 1: https://github.com/cnlohr/ch32v003fun 2: https://mitxela.com/projects/badge

His volumetric candle is AMAZING https://mitxela.com/projects/candle

This is a really neat little project. Make sure to check out the other ones, some of which have been featured on HN before: https://mitxela.com/projects/hardware Personal favorite: the MIDI slide whistle.

holy hell is this guy productive. it is worth scrolling through the various one-off projects he has completed and documented: https://mitxela.com/projects

> If I were making something for this problem I would make an AC-DC-AC converter with a PLL to divide the 60Hz input frequency to 50Hz to control the inverter. This is the best way to do it, especially if the synchronous motor inside the clock is actually fed with a lower voltage from a transformer (which seems to be common in old radio clocks as they needed a transformer anyway to power the radio circuitry). If that is the case, it should be possible to bypass the transformer entirely and build a converter that operates entirely on low voltage; some quick searching suggests that this exact kind of project has already been done before in fact [1]. [1]: https://mitxela.com/projects/phase-locked_inverter

You’re going to love this: https://mitxela.com/projects/melting_kicad

You're not kidding. The slide whistles are my favorite so far: https://mitxela.com/projects/slide

Nice! It reminded me of this great little synth powered parasitically from the MIDI port. https://mitxela.com/projects/flash_synth

mitxela is one of the hidden gems of the internet. Another great project by him — there are so many! — are these earrings with an embedded ATtiny9. Really inspired me to get into hardware hacking. Video: https://www.youtube.com/watch?v=Fzbg-BqIdJI Writeup: https://mitxela.com/projects/charliestar

For more inspiration check out the rest of his page, especially his hardware[1] and software projects[2]. I'm not affiliated with him and recently discovered his channel on youtube[3]. But his homepage is just a sparkling land of great and funny things, I had to share it. [1] https://mitxela.com/projects/hardware [2] https://mitxela.com/projects/software [3] https://www.youtube.com/channel/UCeEf90AEmmxaQs5BUkHqR3Q

Be sure to read the whole series, the interesting screenshots of the oscilloscope and discussions on gameplay start on page 7 ( https://mitxela.com/projects/console/retroracer ) To the author: if you read this, it is was not a waste of time. I would love to read more about your short projects. Don't wait 4 years to document the next one!

yeah, I was really impressed too. using three.js and .wrl files (vrml I guess, hello again 01994) the one-finger orbit and 2-finger pan and zoom was fantastic and intuitively obvious. with a mouse it's left-button orbit, right-button pan, and mousewheel zoom, which is not as immediately obvious but still pretty usable https://mitxela.com/other/3d/loader.js?2 view-source:https://mitxela.com/img/uploads/metal/scaffold/scaffold-case.wrl incidentally meshlab knows how to open .wrl files, and the loader on this page also supports .stl surprisingly, this is not a hack of modelviewer.dev, though it uses the same tag name and underlying 3-d library. it supports different model formats and is an independent effort. https://mitxela.com/projects/model-viewer is a page from last month by jacobs about it no license visible tho, which is a shame because it's awesome and i'd like to be able to use it. still, not that hard to reimplement i guess? now that jacobs has done all the hard and non-copyrightable work of figuring out what kind of user interface and programming interface works best for this

Why would one choose to work with a bare computer board atop a layer of tinfoil like this? https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjc1rzfjnK1u… Perhaps the tinfoil was clipped to a ground? Would it then be protected from static shocks and other invisible (to the naked eye) damage? Historically I've used flattened cardboard outside on top of a brick patio, and ensured I touch a grounded circuit before e.g. replacing capacitors. No e-deaths due to static yet, though my equipment is nearly all from ~circa 1999 or newer, and I believe newer equipment typically incorporates some static protections into designs. TFA's PCB layout connections are so flowy and beautiful, they remind me of a past HN submission about rounded PCB circuit wiring: "Melting KiCad" https://mitxela.com/projects/melting_kicad / https://news.ycombinator.com/item?id=31108652 p.s. this is an amazing writeup, thank you to the OP for submitting and to the author for taking the time and care. Really, really cool. This reminds me a bit of a Ken Sherriff analysis https://righto.com (!) <3

https://mitxela.com/projects/thermal_paper_polaroid talks about making a camera with a raspberry pi, and by using Buildroot they got it down to acceptable boot times

https://youtu.be/edERx4x5eY0 https://mitxela.com/projects/soldering_wlcsp

Oh come on, now I want that clock. https://mitxela.com/shop/clock4

Isn't DDC the I2C bus? Interesting article about that here: https://mitxela.com/projects/ddc-oled

The desireable thing here is that they can fly, not that it's optimal. also you could just drive, lol this thing: https://mitxela.com/projects/turbine_transport_transformer the bigger questing is anyway where this could safely land and start, when it's of no need for sea transport to begin with. Same question remains for that plane. How to do the last miles from the airport. If the route is long enough you can usually find an autobahn and a river wide enough to get 100m blades around. There seem little use for planes in that size class that doesn't add costs.

For those that want more details on how the software works, this guy goes into a bit more detail for his version Fluid simulation pendant https://mitxela.com/projects/fluid-pendant https://www.youtube.com/watch?v=jis1MC5Tm8k

I didn't see that bit, but the layout image[0] shows very large cuts in the ground plane with traces running right over the middle of them, especially between U8 and U7. There's plenty of space here to add some ground traces between them, but that hasn't been done. > you never really know until you get it tested. I suspect they haven't given the lack of a CE marking on the board. As an aside that bothers me a bit given that they say they sold 1000 of the last version, which would easily cover the cost of the (legally required) testing. Normally I'm of the opinion that it's fine to ignore it for some obscure hobby product where the cost of testing would be higher than any expected profits, but in this case they have the money from previous versions of the same product. [0]: https://mitxela.com/img/uploads/clock/mk4/kicad-screenshot2.png

Be sure to check their other projects! Stylophone business card is one of my favs: https://mitxela.com/projects/stylocard

> any jack can have a knob plugged into it to set it to a fixed value. I'm kind of surprised he didn't start with a knob with a tiny accelerometer, mcu and battery in it to produce some sort of output signal into a stock plug depending on how the knob is oriented with respect to gravity. Putting electronics inside the plug is nearly a mitxela trademark. https://mitxela.com/projects/flash_synth