Reader9

joined 1 year ago
[–] Reader9 2 points 1 year ago* (last edited 1 year ago)

If you’re willing to try Aliexpress, Convoy offers a cheap twistable AAA light with a basic low CRI emitter in three color temps for under $10. It’s better than other twist lights I’ve used like because both “on” and “off” are tightly secured to the body so the light won’t fall apart or turn itself on.

[–] Reader9 3 points 1 year ago

Just to add to the other great response, the “D2” pictured above is configured with one ultraviolet emitter and one “deep” red emitter which is not an easy combination to find. And there is a wide range of emitters to choose from based on preference.

[–] Reader9 1 points 1 year ago

Toykeeper herself confirmed that the strobes have no thermal regulation.

https://budgetlightforum.com/t/wurkkos-ts10-ti-v2-much-more-aggressive-thermal-stepdown-compared-to-regular-ts10/220508/48

As of 2023-10, only the ramp mode has thermal regulation

[–] Reader9 5 points 1 year ago

Thanks for posting this. Additionally, I think highlighting some great posts in the sidebar like @[email protected] ’s Anduril diagrms https://lemmy.world/post/1038159 would be great since it shows what’s unique about this small community (on Lemmy).

[–] Reader9 3 points 1 year ago (5 children)

Moisture could be a problem, found this manufacturer faq:

Energizer Non-Rechargeable Batteries: Frequently Asked Questions Is it a good idea to store batteries in a refrigerator or freezer? No, storage in a refrigerator or freezer is not required or recommended for batteries produced today. Cold temperature storage can in fact harm batteries if condensation results in corroded contacts or label or seal damage due to extreme temperature storage

[–] Reader9 2 points 1 year ago

Simon mentioned these represent 3 lights, hopefully including a single-cell mechanical switch light. There appears to be one e-switch single-cell with charging, and unclear if the 2-cell has tail, electronic, or both.

 

Repost from BLF to share these future flashlight designs. There isn’t too much content like this out there that I’m aware of but it’s fascinating to me.

Bonus 90mm TIR:

[–] Reader9 5 points 1 year ago (1 children)

This s6 config is awesome value and I don’t think you’ll be disappointed, especially running in 18350 mode.

Found this beamshot on the other site but I can also say from personal experience that theres a nicely defined hotspot for a tube light.

[–] Reader9 2 points 1 year ago

A posthumous sequel to 1984? Sounds a bit dystopian to me!

Then again I enjoyed Grendel, a retelling of Beowulf from a different point-of-view, so perhaps Julia could be enjoyed in the same way.

[–] Reader9 2 points 1 year ago

I also still like the older Thrunite catapult v1 which preceded Wurkkos’s ts11. It has reasonable output and good runtime for its size, but ts11 can be found for cheaper and has anduril and aux with a possibly slightly worse driver.

[–] Reader9 3 points 1 year ago* (last edited 1 year ago) (2 children)

How about Mankerlight MC13 II with SBT90.2 ($110 USD) emitter or sft40 ($65)?

http://mankerlight.com/mankerlight-mc13-ii-90-2/

It’s a larger 18350 light that twists open to 18650. The TIR is similar to Thrunite Catapult v1 and possibly Wurkkos ts11.

.

A 21700 tube was also released as part of a bundle or here: https://www.killzoneflashlights.com/products/manker-21700-tube-for-mc13-ii-e14-iv.

I don’t have this light but it seems like OK value for the higher price (for very short bursts of throw, not sustained).

[–] Reader9 3 points 1 year ago

Agreed. My copy lost this documentation link in the original which gives more detail about the horizontal scaling: https://join-lemmy.org/docs/administration/horizontal_scaling.html.

It seems really straightforward (which is a good thing), each backend Lemmy_server handles incoming requests and also pulls from a shared queue of other federation work.

[–] Reader9 23 points 1 year ago (2 children)

Time zones are an endless source of frustration, this one doesn’t sound too bad though:

Going forward, all timestamps in the API are switching from timestamps without time zone (2023-09-27T12:29:59.113132) to ISO8601 timestamps (e.g. 2023-10-29T15:10:51.557399+01:00 or Z suffix). In order to be compatible with both 0.18 and 0.19, parse the timestamp as ISO8601 and add a Z suffix if it fails (for older versions).

https://github.com/LemmyNet/lemmy/pull/3496

101
Lemmy 0.19 updates (self.programming)
submitted 1 year ago* (last edited 1 year ago) by Reader9 to c/programming
 

https://programming.dev/post/3666732

Change log for upcoming Lemmy version 0.19.0 I am just reposting this from the original post: https://lemmy.ml/post/5711722.

It’s interesting to see this for the software we’re all using and it makes me want to learn a bit more about the architecture. Quite a few user-facing features and some backend improvements. For example:

Outgoing Federation Queue The federation queue has been rewritten to be much more performant and reliable. This is irrelevant for client developers, but admins should look out for potential federation problems. If you run multiple Lemmy backends for horizontal scaling, be sure to read the updated documentation and set the new configuration parameters. The Troubleshooting section has information about how to find out the state of the federation queues.

https://github.com/LemmyNet/lemmy/pull/3605

22
submitted 1 year ago* (last edited 1 year ago) by Reader9 to c/[email protected]
 

Who’s getting one?

28
Wurkkos TS25 prototypes (budgetlightforum.com)
 

Interesting post from the designer of the ts10 (I think) about potential new body styles of the next-generation ts25.

Bonus comment with good news

Wurkkos Terry: Got it my man. I can feel that the higher and higher voice of regulated driver. We are constantly increasing the regulated models.

 

cross-posted from: https://programming.dev/post/2656516

What are your real-world applications of this versatile data structure?

They are useful for optimization in databases like sqlite and query engines like apache spark. Application developers can use them as concise representations of user data for filtering previously seen items.

The linked site gives a short introduction to bloom filters along with some links to further reading:

A Bloom filter is a data structure designed to tell you, rapidly and memory-efficiently, whether an element is present in a set. The price paid for this efficiency is that a Bloom filter is a probabilistic data structure: it tells us that the element either definitely is not in the set or may be in the set.

 

What are your real-world applications of this versatile data structure?

They are useful for optimization in databases like sqlite and query engines like apache spark. Application developers can use them as concise representations of user data for filtering previously seen items.

The linked site gives a short introduction to bloom filters along with some links to further reading:

A Bloom filter is a data structure designed to tell you, rapidly and memory-efficiently, whether an element is present in a set. The price paid for this efficiency is that a Bloom filter is a probabilistic data structure: it tells us that the element either definitely is not in the set or may be in the set.

14
submitted 1 year ago* (last edited 1 year ago) by Reader9 to c/[email protected]
 

Updated link from https://zeroair.org/2023/08/28/convoy-m21h-flashlight-review/ to https://darrenyeo.com/convoy-m21h-xhp70-3-hi-flashlight-review-best-budget-pocket-rocket/ since the former had some pretty aggressive ads (the new link has some but they were only at the top).

21
submitted 1 year ago* (last edited 1 year ago) by Reader9 to c/[email protected]
 

Convoy is a personal favorite brand for single-cell mechanical switch lights. I’ve been comparing an s2+ with 18350 vs T3 with 14500, and T3 is my preference as a daily light.

So why is the T3 so great? It’s large for a 14500 but also durable and it has an elongated shape (21mm x 97mm) more similar to larger lights than the short s2+ (24mm x 84mm). Just like the s2+, it’s semi-custom in that the customer can choose from a few LEDs and in the case of the popular 519a choose a color temp from 2700k-5700k. Plus Convoy now offers these lights with MAO or in copper (coated for the T3) or titanium (linked) for more consumer choice direct from the factory.

The biggest downside of the T3 and the reason I keep trying to like short s2+ is the T3 driver. With a limit of 1.5 amps with a 14500, this is only 30% as powerful as the standard s2+ 5 amp driver. That’s still very useable with a 519a, but if it were bumped up to about 2.5 amps I think it would be even better. The driver itself has great reviews and regulates the output such that brightness does not immediately decrease with voltage. And for the DIY-capable, the driver is the same size as s2+’s so it has the potential to be just as powerful.

So far I have aluminum T3s in sst-20 deep red and 519a 3000k plus a broken 219b 3500k. Did I mention these start at $15??

 

Anyone else using Hollow (written by Netflix) in production?

Hollow is a java library and toolset for disseminating in-memory datasets from a single producer to many consumers for high performance read-only access.

 

This novella fits well under the larger umbrella of speculative fiction I think. It feels like magical realism with a touch of science fiction and having fairy tale elements.

I also enjoyed Noor and I plan to check out the author’s Binti trilogy.

Would recommend checking one of these out for something a little bit different!

19
submitted 1 year ago* (last edited 1 year ago) by Reader9 to c/[email protected]
 

Edited: previously linked to https://www.sofirnlight.com/products/sofirn-if30-edc-powerful-flashlight?spm=..collection_eea4d417-4338-4a86-ba3e-1a41b66cb32b.collection_detail_1.1, replaced with an image for better Lemmy preview.

Something new from Sofirn. These larger cells (than 26800) seem to be popping up in flashlights more often now. This one lists 6500 mAh which isn't a much bigger capacity but presumably the maximum discharge must be pretty high to support 12000 lumens.

Sft-40 in the center surrounded by flood emitters. This isn’t one I’ll be picking up, maybe I’ll hold out for a 461000 cell!

 

Throwing Rocks: Without spoiling the plot, what are some good books that involve the threat of weaponizing a planet’s gravity well against its population?

Please if possible don’t specify whether the event actually happens in the book to keep it a mystery.

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