LoRa Repeater Lasts 5 Years on PVC Pipe and D Cells

Sometimes it makes sense to go with plain old batteries and off-the-shelf PVC pipe. That’s the thinking behind [Bertrand Selva]’s clever LoRaTube project.
PVC pipe houses a self-contained LoRa repeater, complete with a big stack of D-size alkaline cells.
LoRa is a fantastic solution for long-range and low-power wireless communication (and popular, judging by the number of projects built around it) and LoRaTube provides an autonomous repeater, contained entirely in a length of PVC pipe. Out the top comes the antenna and inside is all the necessary hardware, along with a stack of good old D-sized alkaline cells feeding a supercap-buffered power supply of his own design. It’s weatherproof, inexpensive, self-contained, and thanks to extremely low standby current should last a good five years by [Bertrand]’s reckoning.

One can make a quick LoRa repeater in about an hour but while the core hardware can be inexpensive, supporting electronics and components (not to mention enclosure) for off-grid deployment can quickly add significant cost. Solar panels, charge controllers, and a rechargeable power supply also add potential points of failure. Sometimes it makes more sense to go cheap, simple, and rugged. Eighteen D-sized alkaline cells stacked in a PVC tube is as rugged as it is affordable, especially if one gets several years’ worth of operation out of it.

You can watch [Bertrand] raise a LoRaTube repeater and do a range test in the video (French), embedded below. Source code and CAD files are on the project page. Black outdoor helper cat not included.

youtube.com/embed/_I2cU9q78XQ?…

hackaday.com/2025/12/02/lora-r…

В тимчасово окупованому Криму "примари" ГУР "відмінусували" винищувач МіГ-29.

Атака була здійснена на військовий аеродром "Кача".

🙌 Під удар також потрапив аеродромний радіолокаційний комплекс "Іртиш" поблизу тимчасово окупованого Сімферополя.

До Києва прибув Президент Кіпру на тлі підготовки країни до головування у Раді ЄС.

Очікується, що Нікос Христодулідіс зустрінеться із Зеленським.

Сі Цзіньпін на зустрічі з президентом Франції заявив, що Китай підтримує ідею мирної угоди щодо України, "прийнятної для всіх сторін".

🇨🇳🇨🇳Він також сподівається, що сторони зможуть досягти справедливого і тривалого миру шляхом діалогу, а Пекін, зі свого боку, підтримує будь-які зусилля для цього

Білий дім перейменував Інститут миру на честь Трампа, інформує CNN.

Напередодні адміністрація Трампа фактично закрила інститут, скасувавши його федеральне фінансування на наступний рік.

У КНДР є табори "перевиховання" українських дітей з ТОТ, яких мілітаризують та русифікують", – заявила експертка міжнародного правосуддя на слуханні Сенату.

За даними Рашевської, російська влада утримує дітей у росії, Білорусі та Північній Кореї, створивши щонайменше 165 таких таборів.

Генасамблея ООН ухвалила резолюцію з вимогою до рф негайно повернути всіх незаконно вивезених українських дітей.

Проти виступили країни: росія, Білорусь, Буркіна-Фасо, Бурунді, Куба, Демократична Республіка Конго, Еритрея, Іран, Малі, Нікарагуа, Нігер і Судан

A grim reminder that #Russia GRU actually killed an entirely unrelated and innocent civilian in their sloppy and reckless chemical weapons attack in 2018:

The GRU, Russia’s military intelligence agency, is now sanctioned in its entirety by the UK. GRU agents carry out Putin’s bidding, seeking to destabilise Ukraine and attempting to sow chaos and disorder across Europe. The action comes as the Dawn Sturgess Inquiry publishes its final report into the tragic circumstances surrounding Dawn Sturgess’s death in Salisbury in 2018.

Today’s sanctions also zero in on 8 cyber military intelligence officers for working for the GRU, the organisation which was responsible for cyber operations targeting Yulia Skripal with X-agent malware and, 5 years later, the attempted murder of Yulia and her father on UK soil.

The report concludes that the GRU is responsible for the death of a British national on UK soil after President Putin himself authorised the operation to poison the Skripal’s with deadly nerve agent Novichok. This Novichok was developed and held by Russia in contravention of the Chemical Weapons Convention. This subsequently resulted in the tragic death of Ms Sturgess.

gov.uk/government/news/uk-crac…

Post di prova da Raccoon

Questo è un post di prova pubblicato dall’app Raccoon, dopo l’installazione del plugin #WordPress Enable mastodon app, una soluzione che implementa in un qualsiasi sito Wordpress le API di mastodon.

Obiettivi

L’obiettivo è capire se i tag di formattazione presenti su Raccoon, come quelli del grassetto, del corsivo, del sottolineato, del testo monospazio e del barrato, funzionano.

Vorrei […]

Questo è un post di prova pubblicato dall’app Raccoon, dopo l’installazione del plugin #WordPress Enable mastodon app, una soluzione che implementa in un qualsiasi sito WordPress le API di mastodon.

Obiettivi

L’obiettivo è capire se i tag di formattazione presenti su Raccoon, come quelli del grassetto, del corsivo, del sottolineato, del testo monospazio e del barrato, funzionano.

Vorrei provare anche le citazioni ma non so bene quale tag utilizzare…

…quindi Ne utilizzo due.

Vediamo invece se funzionano le menzioni e come vanno trattate:

@test

@test

Allego anche un’immagine per capire come verrà visualizzata su WordPress

#Activitypub #Raccoon

informapirata.it/2025/12/04/po…

#ActivityPub #Raccoon #wordpress

informapirata.it/2025/12/04/po…

Retrotechtacular: Learning the Slide Rule the New Old Fashioned Way

Learning something on YouTube seems kind of modern. But if you are watching a 1957 instructional film about slide rules, it also seems old-fashioned. But Encyclopædia Britannica has a complete 30-minute training film, which, what it lacks in glitz, it makes up for in mathematical rigor.

We appreciated that it started out talking about numbers and significant figures instead of jumping right into the slide rule. One thing about the slide rule is that you have to sort of understand roughly what the answer is. So, on a rule, 2×3, 20×30, 20×3, and 0.2×300 are all the same operation.

You don’t actually get to the slide rule part for about seven minutes, but it is a good idea to watch the introductory part. The lecturer, [Dr. Havery E. White] shows a fifty-cent plastic rule and some larger ones, including a classroom demonstration model. We were a bit surprised that the prestigious Britannica wouldn’t have a bit better production values, but it is clear. Perhaps we are just spoiled by modern productions.

We love our slide rules. Maybe we are ready for the collapse of civilization and the need for advanced math with no computers. If you prefer reading something more modern, try this post. Our favorites, though, are the cylindrical ones that work the same, but have more digits.

youtube.com/embed/RA0uRxVjZL4?…

hackaday.com/2025/12/02/retrot…