Juancho 🇪🇸

Spaniard, software developer for more than 25 years, geek, Lego super fan, dogs lover and tech fan. Here you could find cool stuff about any of those

[Tolkien World @TolkienWorldG]

Possibly the coolest thing I’ve ever seen.

Via: qrelics IG (Quantum Relics Workshop YT)

[Ilir Aliu @IlirAliu_]

You don’t need expensive hardware to build something that feels like real robotics.

An Arduino, a servo, and an ultrasonic sensor can scan space and turn echoes into a simple radar view. It sweeps, measures distance, and visualizes it in real time.

Cheap, simple, and a solid way to understand how machines sense the world. Limits show up fast, which is where better sensing and smarter software come in.

Original build by SunFounder
https://t.co/hS8LsLOXAk

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Weekly robotics and AI insights.
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[Ryan Els @RyanEls4]

The difference between Server and Serverless architecture 🤔

[Raúl Sánchez 📈 @raulsanchezglez]

🌘 ¿Sabes ya dónde vas a ver el eclipse total de Sol del 12 de agosto de 2026?

En @elDiarioes hemos montado un mapa para ver por dónde pasará la sombra de la Luna y cómo se verá el eclipse desde cualquier lugar del mundo, minuto a minuto 👇

[Marc Berruezo Ais @MarcAis]

Funniest thing about the Central Europe heat wave fuss is that, all of a sudden, the Spanish siesta, closing stores mid-day, and dinner at 10 PM doesn’t sound so lazy Southerners.

We had 35 degrees for centuries before AC existed. Welcome to our life. You will get better at it.

[ruanyf @ruanyf]

SQLite 数据库的作者 Richard Hipp 解释，为什么他的项目一律不接受外部的 PR。

PR 不是免费的。你实际上是对我提要求：你开发了这个很棒的功能，然后希望我帮你维护它、帮你编写文档、帮你测试，并在接下来的二十五年里一直为你维护它。

Linus 曾说过一句名言：Free 既可以指免费啤酒，也可以指言论自由。但还有另一种 Free：免费的小狗。“瞧，我这儿有只免费的小狗送给你。” 你明白我的意思了吧？

提交一个 pull request 就相当于有人送你一只小狗。一天下来，你的小屋里就多了一只小狗。你不能把它扔掉——你有道义上的责任照顾它，直到它自然死亡。

我可不要任何免费的小狗。https://t.co/kD8Kri3V9K

[Epic Clip Vault @EpicClipVault]

Whatever she’s getting paid, triple it.

[Enrique @enriqdev]

Google fue muy listo; usan los acelerómetros de miles de teléfonos Android cómo una red global de sismos, toda esa data se envía y Google logró una forma de detectar esas ondas a tiempo y enviar las alertas.

[Maximiliano Firtman @maxifirtman]

Cuenta de Gmail desactivada luego de usar el servidor MCP oficial de Gmail con un agente de IA. La sospecha es que la cuenta fue creada por un bot. 🤌🤡

Por eso, tengan cuidado con conectar sus cuentas principales a agentes de IA. Más la de Gmail donde tienen toda su vida.

[Constantine K @Semper_Viventem]

Claude Code automatically adds itself to the commit metadata "Co-Authored-By: Claude Opus <[email protected]>".

I strongly disagree with crediting Claude as a commit co-author. It is a tool I'm paying for, not a copyright holder, not an author. We don't credit Visual Studio.

[Puppies & Positivity @Puppieslover]

“Loyalty” By Briton Rivière in 1869

[Knowledge & History @xKnowledgeBANK]

A very ridiculous Billionaire's maths!

[Deedy @deedydas]

Most software engineers are facing an identity crisis bordering on depression.

As CTOs aggressively evangelize tokenmaxxing, a class divide ensues.

The lazy. The lazy push code. They don't write it. They don't manually test it. They don't even read it. They're on autopilot. See Jira ticket, prompt for task, submit code. Many of them are barely on their computer the whole day. A comment on the PR asking why they did this? The lazy ask AI. A Slack message? The lazy ask AI. Need to prepare for standup? The lazy ask AI. As long as it sounds enough like them and isn't detected. Some of the lazy are even overemployed, and work multiple jobs. The lazy smart ones get away with this, and even rewarded. After all, software engineering for the lazy is just a dance to convince your colleagues you're smart and hard working.

The craftsmen. The craftsmen are tired. Very tired. 15 PRs in queue. Slack blowing up. The entire burden of review falls on the craftsman. The burden of understanding. They try. They work their way through the code, thoughtfully commenting to improve what ships. The response? A lazy: "That's a clever idea! You're absolutely right." with an incorrect change. It's fine, the craftsman says. I can fix them. They write a doc urging his colleagues to be better. The next day? 20,000 line PR to review. Day after day, their workload grows. Bugs seep into production. No one seems to care. Another round of AI is thrown at it. Their animosity to their colleagues rises. Eventually, they give up. It's just not what it used to be. The craft they loved is dead. They eventually wake up, a lazy.

This isn't all companies. Many companies are genuinely more productive, adopt the right set of principles and practices around AI development and have highly talented teams that trust each other. It tends to happen in bigger companies that are 10+yrs old with a higher talent variance. But it happens. A lot.

[Mat Velloso @matvelloso]

-We built a sandbox for agents!
-Oh, cool, so they are blocked from accessing anything outside?
-Well, no, they need to access files, emails, APIs...
-So... you have a sandbox with a literal port open to the internet?
-Well, yeah otherwise the agents would be useless
-I see... But at least they can't write and run arbitrary code, right?
-What, no, of course they can do that, they are agents
-So... your sandbox lets agents write and run code that can literally run anything on internet?
-Yeah
-Let me ask you this: Are the employees in your company running these on their machines?
-Well, they are...
-But...?
-...but with guardrails
-Guardrails?
-Yeah
-Let me guess: The guardrail is a prompt?
-IT'S A VERY NICELY FORMATTED MARKDOWN FILE OK

[Nitro-Spidey @NitroSpidey]

I didn’t realise how bad the centred cinematography was until I saw this, like… goddamn.

[Ryan Els @RyanEls4]

Still accurate in 2026 😂🤭

[Antonio Camuñas @ManhattanManOne]

The spanish…