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sandreas

2,872 karma · joined May 17, 2017

<https://pilabor.com>
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sandreas··on The $8 Linux Computer (2022)
Unfortunately, to my knowledge there is no "official" buildroot image for the LicheeRV Nano that supports a Kernel higher than 5.x, although 7.x would bring native support for many features, likely the cpu governor.

However, there is also still a proprietary bootloader blob that has to be included, but still: I like the device and it's hardware... it could have better docs though.

I wrote some best practise, but a lot of thing are still missing: https://github.com/scpcom/LicheeSG-Nano-Build/blob/develop/b...

A newer project might be more successful on that: https://github.com/lone0/buildroot-external-licheervnano

sandreas··on The $8 Linux Computer (2022)
Personally I think the LicheeRV nano on SG2002 is worth the investment of 15-20 bucks.

This thing has USB OTG, multiple usable GPIO and can be flashed via microSD and has a display out with touch support.

I was in the process on building a little iPod Nano clone[1] with Rust / Slint but i was too busy for a while, yet I plan to get back to it in the future. Unfortunately the sg2002 image has no CPU governor yet.

Maybe I switch to the tinyembedded dual with a custom PCB to save power[2].

1: https://github.com/nanowave-player/nanowave-ui

2: https://github.com/yuansco/TinyEmbedded-Dual/

sandreas··on Show HN: Marelleo, an open-source story box I built for my kids using ESP32
Nice work. Although I'd probably had used one of the newer esp32 from seeed Studio with integrated battery pads (unfortunately the BatteryPal from PNLabs is still in the making). A DFPlayer Mini might also habe saved some time...

There also is a german project called Tonuino, which is quite similar and has lots of examples and documentation - they even designed a custom PCB which unfortunately is no longer available:

https://github.com/tonuino/TonUINO-TNG

Another rasperry focussed project that has a web interface is Phoniebox:

https://phoniebox.de/index-en.html

There also is a toniebox hack, which lets you setup a self-hosted content server:

https://gt-blog.de/toniebox-hacking-how-to-get-started/

sandreas··on Show HN: Uberblok – an interactive museum of ZFS internals
Just use an LLM, describe what you need and you get a commented config that does what you need.

I use it for:

- job 1: every 15 minute autosnapshot and cleanup

- job 2: push encrypted snapshots to an external harddrive via cronjob and signal

- job3 (another server): pull snapshots from the main server via ssh for ransomware resistant backups (mainserver cannot access backupserver at all)

sandreas··on Show HN: Uberblok – an interactive museum of ZFS internals
Wait until you find out that zrepl[1] exists, what it can do and that it can even be signaled ;-)

1: https://github.com/zrepl/zrepl

sandreas··on Ask HN: What's your favorite children's books?
If you are looking for something non-mainline with exceptional drawings, you could check out Chiaki Okada's work. My kids loved the "Spring" book with the ice bear (in germany it is called "Bist du der Frühling", but i did not find an english translation)
sandreas··on Ask HN: What are you reading to your kids?
If you are looking for something non-mainline with exceptional drawings, you could check out Chiaki Okada's work.

My kids loved the "Spring" book with the ice bear (in germany it is called "Bist du der Frühling", but i did not find an english translation)

sandreas··on 192GB Framework Desktop open for pre-order
They really should make a notebook board with the strix chip, like the zbook ultra g1a. I wouldn't mind the soldered ram having the opportunity to get this Kind of performance with no upgrade path if it had a good reason
sandreas··on Gitea 28.0
Something like gitolite has the benefits of access control... act can hell with actions. But I like the webif approach
sandreas··on 16GB iPod Nano 3G Upgrade
USB-C is possible, but really difficult to solder:

https://www.youtube.com/watch?v=YtYlUcelBuc

Should also work on the Nano 3g

sandreas··on 16GB iPod Nano 3G Upgrade
I think the iPod is a strongly underestimated device. Unfortunately the iPod Nano 3rd gen lacks first class support for audio books.

I'm more into 6th and 7th gen iPods. These unforunately are missing the iconic click wheel in favor of a tiny touch screen. The 7th gen even has Bluetooth 4.0.

Trying to build one myself[1] with Linux, Rust/Slint and 3d printing made me realise what an engineering effort it took to build a device running more than 12 hours of music playback with a 220mah battery supporting ui animations - all that more than 12 years ago. My nanowave approach draws ~330ma, which would require a 2000mah battery to run 6h from full to dead.

I'm in the process of analyzing the TinyEmbedded Dual[2] to have better efficiency as my current solution (LicheeRV Nano) but progress is painfully slow because i have pretty much no free time and have to learn 3d printing, PCB design and Rust at the same time.

However, I think today it would be possible to build an iPod at home if you have the knowledge and time. Probably you're better off just using a HiBy R1 (which uses Linux under the hood, I already managed to compile my Rust/Slint player for it)[3]

1: https://github.com/nanowave-player/nanowave-ui

2: https://github.com/yuansco/TinyEmbedded-Dual

3: https://github.com/yetisoldier/Hiby-R1-Audiobook-Mod/issues/...

sandreas··on F-Droid 2.0
No... I use a combination of Aurora, Obtainium and F-Droid.

Unfortunately there are APP providers actively preventing their apps to work on graphene OS, so i own an extra use@home cheap broken glass iphone for these mandatory but non-graphene apps.

It is a pain and it is getting worse... I'm really tempted to get back to the Apple ecosystem for less shens but currently i cannot do this yet... It just feels wrong but the pain is real. I'm Lösung the fight of investing too mich of my time in things that just should work.

sandreas··on Ideas on modernizing the open-source desktop
The only thing I'm missing with the workspaces or tiling WM is slide in Windows for cross cutting concerns...

Want a terminal on the exact screen/workspace without minimizing windows or switching workspaces?

Want to drag a file from a file manager into an open Window?

Want to lookup something in your contacts or calendar?

I thought of something like quake-mode [1]/ guake as global overlay triggered by a shortcut like super+t for terminal etc. Would be a nice Addition to cosmic with tiling i think. Did not find the time for a PR yet.

1: https://github.com/repsac-by/gnome-shell-extension-quake-mod...

sandreas··on Used ThinkPad Buyer's Guide (2019)
T14(s) is to small for my old eyes - see comment above ;)
sandreas··on Used ThinkPad Buyer's Guide (2019)
Yeah the T14(s) would be the right choice in nearly all of my requirements - even Gen 4 has Ryzen 7840 + OLED + 32GB configs (rarely, but available).

Unfortunately T14 is NOT > 14.5" Display... I would prefer a 15-16" Display (I'm getting old and my eyes are not as good any more), but all of these have a numpad, except the Thinkpad P1 which is only available with Intel and pretty expensive. So the only Ryzen > 14.5" Display option without numpad might be the Framework 16 or maybe some other non business or niche brand.

sandreas··on Used ThinkPad Buyer's Guide (2019)
Yeah I know... ZBook Ultra G1a is the only "notebook" alternative while the z13 i more like a "Pad" with keyboard - and while the zbook seems to be a good notebook in general, it is not > 14.5". Otherwise I would have bought it right away.

To be real I already had my mousepointer over the "order" button, when it was 3099 with Ryzen 395+ and 64GB RAM, but I didn't do it and 3 days later it was 3299 - regrets ;)

Another option as buy a used T14s with Ryzen 7840, 32GB and 2k Oled for 699 - but it was too far to check it out and pay it in cash, so I skipped... regrets²

sandreas··on Used ThinkPad Buyer's Guide (2019)
I was looking for a Notebook (best case Thinkpad) with the following Criteria:

- Business class

- Ryzen 5 or greater (Strix Halo would be great)

- >= 32GB RAM (soldered would be ok)

- 14.5" WQHD 2560x1440 Display (>1920x1200)

- NO Numpad / centered keyboard

- >=70Wh Battery

There just is hardly anything to find in this category. There is Dell Precision, Hp Elitebook, LG Gram, Acer Swift... but somehow they all feel unsufficient. The Thinkpad P1 was close, but has Intel...

So I'm gonna wait until the Framework 16 Pro (if ever released) or until Intel gets another decent GPU upgrade so it can compete :-)

sandreas··on The largest electric aircraft just flew [video]
No offense taken, thanks for the explanation. Makes sense.
sandreas··on Btrfs/ZFS/bcachefs under workloads classic benchmarks skip
This. Btrfs blew up without ANY reason at all in my case. Rebooted and the system won't even recognize any filesystem. All btrfs tools fails to recover a single file.

Here is my journey: https://forum.cgsecurity.org/phpBB3/viewtopic.php?p=39143

I switched to ZFS and never Bad a Problem again.

sandreas··on Fujitsu launches made-in-Japan next-generation CPU FUJITSU-MONAKA
I'm kind of a Fujitsu fanboy. Since i came across the fact that a pretty modern xeon ecc ram nvme Workstation boards can be optimized to only draw ~10 Watt idle is just impressive, that is less than a gaming router. Even older ones like D3417-B12 were crazy effizient.

I also liked their Primergy Servers, but never got one for a reasonable price to test it out.

Another thing was the Futro series (e.g. S930) that could be used as opnsense firewall or low budget proxmox host.

Unfortunately it was always hard to obtain the high quality stuff as a consumer and years ago they sold their mainboard section to kontron. So no new Fujitsu Mainboards for now... What a pity.

sandreas··on Ask HN: Resources to get good at soldering?
As already been said, an Oscilloscope is for more professional work. As an example you can take a look at the iPod Remote Protocol (https://tinymicros.com/wiki/Apple_iPod_Remote_Protocol) or watch Jeff Geerlings video about the device (https://www.youtube.com/watch?v=IRBT0N67YFA)

In general you probably don't ever need one, if you're not too serious into electronics - that is why I put one in the "more advanced" listing.

sandreas··on Ask HN: Resources to get good at soldering?
Yeah I forgot solder wick. It's better to have both. However, if you'd always used cheap pumps you'd maybe like to try the Engineer SS03. It's a whole different ballpark, although it is pretty expensive. The clones are not as good, but way better than the normal 2$ ones.
sandreas··on Ask HN: Resources to get good at soldering?
Did not know that. Thank you.
sandreas··on Ask HN: Resources to get good at soldering?
FNIRSI 2C53T for more serious work

ZEEWEII DSO154Pro to go as cheap as possible for something that is roughly useful

sandreas··on Ask HN: Resources to get good at soldering?
Any recommendations?
sandreas··on Ask HN: Resources to get good at soldering?
I don't fully agree. Hakko is high quality, quiet, but also VERY expensive (300+ bucks) and the gun contains the vacuum pump which makes it HEAVY and not easy to work with for longer than a few minutes.

The ZD-8965 is cheaper (not as high quality but good enough and only around 100 bucks), has a separated station with a very light gun, that is pretty easy to work with and it is significantly smaller more silent than other ZD-* models. Another advantage is that the gun can be replaced for around 25 bucks, so if you ever drop it or it gets leaky, you don't have to invest another 100 bucks.

I used it for desoldering / mill maxing multiple Logitech G515 keyboards with 88 switches (264 solder joints) and I worked through a whole keyboard with one go - no cleaning, no clog, no overheat.

sandreas··on The largest electric aircraft just flew [video]
I'm aware of that. Just thinking of using ANY space, that can be filled - like all hallow room in the plane that cannot be made use of.

I'm not an engineer, probably it is more reasonable to fill the remaining space with battery ;)

sandreas··on The largest electric aircraft just flew [video]
I wonder if these airplanes are using helium to "reduce the weight"... that is something I also don't usually on drones. Probably too expensive.
sandreas··on Ask HN: Resources to get good at soldering?
Oh I forgot... a big magnifier glass (8x to 15x) with an LED light is way cheaper than a microscope and very helpful for small parts soldering (SMD) :-)
sandreas··on Ask HN: Resources to get good at soldering?
While soldering is not that hard, different tasks require different tools. Most of them can be from very cheap to very expensive. As a beginner I'd recommend the following:

A small USB-C soldering iron supported by IronOS[1], e.g. Pinecil vor TS100

A solid stand with brass wool

A KU soldering tip (looks a bit like a knife) for good heat transfer, too small tips are not good

Thin (<=0.5mm) solder wire

No clean flux (not a pen)

Isopropyl alcohol

Solder fume extractor (DIY is OK, if you're building it right) is good for your health

Solder mat (blue silicone)

Multimeter (not too cheap, around 20 bucks)

Self closing tweezers

Normal tweezers

A wirecutter (blue 5 bucks from ali express)

Manual Desoldering pump (engineer ss03 or a clone for cheaper)

Most important is cleaning (alcohol, then flux) and heat transfer (tin your tip, your pads or your wire before putting things together to ensure good heat transfer). Cleanup nicely and tin your tip after soldering to prevent corrosion.

Optional but helpful for more professional tasks:

Hot air station

Auto Desoldering pump (ZD-8965)

Adjustable power supply (fnirsi usbc, 30 bucks)

Oscilloscope (mini beginner with display Cost around 30 bucks)

Capton tape

Solid Copper wire

1: https://github.com/Ralim/IronOS

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