Hands On: The Hacker Pager

It should come as no surprise that the hacker community has embraced the Meshtastic project. It’s got a little bit of everything we hold dear: high quality open source software, fantastic documentation, a roll-your-own hardware ethos, and just a dash of counterculture. An off-grid communications network cobbled together from cheap parts, some of which being strategically hidden within the urban sprawl by rogue operators, certainly sounds like the sort of thing you’d read about it in a William Gibson novel.

But while the DIY nature of Meshtastic is one of its most endearing features for folks like us, it can also be seen as one of its weak spots. Right now, the guidance for those looking to get started is to pick a compatible microcontroller development board, 3D print a case for it, screw on an antenna from AliExpress, flash your creation with the latest firmware, and then spend some quality time with the documentation and configuration tools to actually get it on the air. No great challenge for the average Hackaday reader, but a big ask for the weekend adventurer that’s just looking for a way to keep in touch with their friends while camping.

Quality hardware that offers a turn-key experience will be critical to elevating Meshtastic from a hobbyist’s pastime to something that could actually be fielded for applications such as search and rescue. Plus, let’s be honest, even those of us who like to put together our own gadgets can appreciate a more consumer-oriented piece of hardware from time to time. Especially if that hardware happens to be open source and designed to empower the user rather than hold them back.

Enter the Hacker Pager from exploitee.rs. As the name implies, it’s still very much a device intended for hackers — a piece of hardware designed for the halls of DEF CON rather than trekking through the wilderness. But it’s also an important step towards a new generation of Meshtastic hardware that meets the high standard of quality set by the software itself.

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Farewell Shunsaku Tamiya: The Man Who Gave Us The Best Things To Build

In the formative experiences of most Hackaday readers there will almost certainly be a number of common threads, for example the ownership of a particular game console, or being inspired into engineering curiosity by the same TV shows. A home computer of a TV show may mark you as coming from a particular generation, but there are some touchstones which cross the decades.

Of those, we are guessing that few readers will not at some point have either built, owned, or lusted after a Tamiya model kit at some point over the last many decades, so it’s with some sadness that we note the passing of Mr. Tamiya himself, Shunsaku Tamiya, who has died at the age of 90.

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Robots Are Coming For Your Berry Good Job

We don’t know if picking blackberries at scale is something people enjoy doing. But if you do, we have bad news. The University of Arkansas wants to put you out of a job in favor of your new robot overlord. It turns out that blackberries in Arkansas alone are a $24 million business. The delicate berries are typically hand-picked.

The robot hand that can do the same job has three soft fingers and tendons made from guitar strings. Each finger has a force sensor at the tip so it can squeeze the berries just right. How much force does it take to grab a blackberry? To find out, researchers placed sensors on the fingers of experienced pickers and used the data to guide their design. Researchers claim they were inspired by the motion of a tulip opening and closing each day.

Your berry picking job is safe for now, though. They don’t have the vision system to actually find the berries. Not yet, anyway. Of course in the meantime, the gripper could be used for anything that needs a delicate touch.

Oddly, everyone seems to want to develop robots to pick agricultural items. We are usually more interested in a different kind of picking.

Closeup of WOPR interface on Raspberry Pi

Rebooting WarGames‘ WOPR With A Pi And Gemini

WarGames fans, rejoice: [Nick Bild] has rebooted WOPR for real. In his latest hack, the Falcon, he recreates the iconic AI from the 1983 film using a Raspberry Pi 400, a vintage SP0256-AL2 speech chip from General Instrument, and Google’s Gemini LLM. A build to bring us back to the Reagan-era.

Where most stop at visual homage, this one simulates true interaction. The Python script acts as dungeon master for Gemini 2.5 Flash, guiding it to roleplay as the WOPR computer. Keypress sounds click-clack in synchrony with every input. Gemini replies are filtered into allophones, through GI-Pi, [Nick]’s own Python library. The SP0256 then gives it an eerily authentic robotic voice, straight out of 1983.

[Nick] himself is no unfamiliar name to Hackaday. Back in 2020, he hosted a Hack Chat where he talked us through getting from ideas to prototype builds. He practices what he preaches, since he carried out projects like a breadboard 6502 computer, home-automation controlling AI sunglasses, and more silly inventions, like dazzle-proof glasses.

So… shall we play a game? If you’ve ever longed to chat with an 80s military AI about thermonuclear war or tic-tac-toe without doubting you end the world in a blink, start on this build.

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Legally Distinct Space Invaders Display WiFi Info

In the early 00s there was a tiny moment before the widespread adoption of mobile broadband, after the adoption of home WiFi, and yet before the widespread use of encryption. For this brief time a unique practice arose called wardriving — where people would drive around, document, and use these open wireless networks.

Although the pursuit has diminished with the rise of mobile broadband and WPA encryption, there are still a few use cases for the types of hardware a wardriver would have used. [arduinocelentano] recently built a Wi-Fi strength monitor in this style but with a unique theme.

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Stephen Hawes operating his LumenPnP

The LumenPnP Pasting Utility: Never Buy Solder Stencils Again?

Over on his YouTube channel the vivacious [Stephen Hawes] tells us that we never need to buy solder stencils again!

A big claim! And he is quick to admit that his printed solder paste isn’t presently quite as precise as solder stencils, but he is reporting good success with his technique so far.

[Stephen] found that he could print PCBs with his fiber laser, populate his boards with his LumenPnP, and reflow with his oven, but… what about paste? [Stephen] tried making stencils, and in his words: “it sucked!” So he asked himself: what if he didn’t need a stencil? He built a Gerber processing, G-code generating, machine-vision implemented… website. The LumenPnP Pasting Utility: https://paste.opulo.io/

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Soldered RAM Upgrades Finally Available For Mac-PPC

In the retrocomputing world, [DosDude1] is a name spoken with more than a little respect. He’s back again with a long-awaited hack for PowerPC Macintosh: soldered RAM upgrades!

[DosDude1] is no stranger to soldering his way to more storage– upgrading the SSD on an M4 Mac Mini, or doubling  the VRAM on an old GPU. For a PPC Mac, though, it is not enough just to solder more RAM onto the board; if that’s all it was, we’d have been doing it 20 years ago. Once the RAM is in place, you have to have some way to make sure the computer knows the RAM is in place. For a WinTel machine, getting that information to the BIOS can be as easy as plugging in the right resistors. Continue reading “Soldered RAM Upgrades Finally Available For Mac-PPC”