Raspberry Pi

1847 Articles

Raspberry Pi OS In-Place Upgrades, Not For The Faint Hearted

November 1, 2023 by 33 Comments

The Raspberry Pi series of boards are noted for their good software support, with a continuous flow of operating system upgrades such that an original Pi from 2012 will still boot the latest Pi OS. But these upgrades are best done by writing a fresh SD card, so oddly, the Pi remains surprisingly difficult in many cases to upgrade in place. [Iustin Pop] has taken a look at the problem, and finds that though it’s not always easy it remains possible with a bit or work.

An upgrade in place of a Raspberry Pi OS install that’s running on a headless device is probably the simplest of the lot, with a relatively small set of issues. Do it on a machine using the GUI though, and the switch from x.org to Wayland makes for a whole world of pain.

Perhaps most interesting for the insight it gives us into the way Raspberry Pi OS is derived from Debian, is the crossgrade process from the ARMhf build for earlier machines to the ARM64 one for the more recent ones. Here aside from a headache of differing paths and versions, he encounters the Pi-specific compilation tweaks put in place by the developers of Raspberry Pi OS, leading to the ARMhf version being a different branch from the original Debian than the ARM64 one.

Having read his examination of in-place upgrades we have to say that simply writing a new SD card remains the most attractive option. But sometimes along comes a remote system where that’s simply not possible, and this guide might just be very useful sometime.

2023 Halloween Hackfest: Spooky Noise Maker Is Self-Contained

November 1, 2023 by 4 Comments

We just love it when y’all build off of each other’s projects. This spooky Halloween noise maker from [C.M. Herron] is no exception. But while the projects we’ve seen lately rely on external computers and/or guitar pedals to create the effects part of the build, this one has everything running on a Raspberry Pi that sits inside the box.

Readers of a certain vintage will recognize this as an 8-track storage box, on top of which are several noise-making objects that creak and ting and reverberate nicely. A USB microphone picks up the sounds, and by using a regular microphone instead of a piezo, [C.M.] can introduce varying levels of feedback to make the sounds even spookier.

So, how did [C.M.] make this work on a Pi 4? To put it simply, they’ve got the Reaper DAW and Windows Valhalla plugins running on top of WINE, which running on top of Box64, which is running on top of the Bullseye Pi OS. [C.M.] sure learned a lot from this build, and hopes to inspire others to build their own spooky noise boxen. Plus, they’ve already thought of ways to improve it for next year. Be sure to check it out in action after the break.

Continue reading “2023 Halloween Hackfest: Spooky Noise Maker Is Self-Contained” →

Booting The Raspberry Pi 5 With An NVMe SSD

October 25, 2023 by 27 Comments

The Raspberry Pi has come a long way since its humble origins, adding faster processors and better interfaces with each new generation. Now, the Raspberry Pi 5 has a lovely new PCIe port right on board, and [Jeff Geerling] has gone right ahead and slammed in an NVMe SSD as a boot drive.

[Jeff] explains that to use an NVMe to boot, you first have to modify /boot/config.txt to enable PCIe and modify the Raspberry Pi’s boot order. Once the bootloader is appropriately configured, you can boot straight off an SSD with Raspberry Pi OS installed. To get the operating system on to an NVMe drive, he recommends cloning an existing boot volume from a microSD install.

One of the primary reasons you might want to do this is speed. NVMe drives are generally a significant cut above even the best microSD cards, both in speed and reliability. [Jeff] also notes that you can use an NVMe SSD through a PCIe switch on the Pi 5 if you so desire, but you can’t currently boot with this configuration.

It’s a great feature to have on the Pi 5, and it follows on from the earlier implementation on the Raspberry Pi Compute Module 4. Video after the break.

Continue reading “Booting The Raspberry Pi 5 With An NVMe SSD” →

KaboomBox Is A Firecracker Of A Music Player

October 23, 2023 by 5 Comments

Ka-chunk. Let’s face it, 8-tracks were not that great. But the players, that’s another story. The Panasonic RQ-830S, aka the dynamite or TNT player is just one of many lovely designs that used to grace the shelves of electronics stores. Hackaday alum [Cameron Coward] came across a non-working model and used it to create the KaboomBox.

Just like before, all [Cameron] has to do is stick a tape in, and music starts playing. But now, instead of using rust on tape, the music is accessed via RFID and lives on an SD card inside the 8-track player.

Power it on, and a tiny LCD screen showing through the track number window first displays the KaboomBox logo, then shows a timer whenever it’s waiting for a tape. And just like before, pushing down on the plunger skips to the next track.

The new guts include a Raspberry Pi Pico and an RFID reader, plus a DF Player Mini to handle the digital-to-analog conversion and amplify the signal, and an SD card to store the music. Now, [Cameron] is only limited by the size of the SD card. Check out the demo video after the break.

We’ve seen all kinds of boomboxen around here, from the lit to the Bluetooth to the payphone variety.

Continue reading “KaboomBox Is A Firecracker Of A Music Player” →

2023 Halloween Hackfest: Haunted Keyboard Is Free From Ghosting

October 20, 2023 by 1 Comment

This may look like another DIY mechanical keyboard, but it’s hiding a secret. [Mx. Jack Nelson] has combined Halloween and keyboards in glorious, haunted fashion. Type a line, any line into this bad boy and you get a spooky, sort of cryptic response generated by AI.

Essentially, a Raspberry Pi Pico W does all the work, it handles the keyboard matrix, connects to Wi-Fi, sends the input to ChatGPT, and spits the response out on the screen wherever the cursor happens to be. Incidentally, it turns out [Mx. Jack Nelson] used ChatGPT to generate much of the CircuitPython code.

The layout is a custom 40% that is heavily influenced by the Akko 40%, with the Ctrl, Alt, and Win keys replaced by Ctrl, Cmd, and Opt. This was [Mx. Jack Nelson]’s first PCB, and you never forget your first. You don’t want to miss the demo video after the break.

Are keyboards just not spooky enough for you? Here’s a creepy baby doll that does basically the same thing.

Continue reading “2023 Halloween Hackfest: Haunted Keyboard Is Free From Ghosting” →

A Typewriter For The Paperless Age

October 19, 2023 by 9 Comments

Writing is, as any of the Hackaday crew will tell you, a task which requires concentration. For your best work there’s a need to be in that elusive Zone, and for some that means making the experience as distraction free as possible. For them there’s an entire class of minimalist word-processors and text editors which reduce the UI to nothing more than the text. [Adam Blumenberg] has taken this a step beyond software with his digital typewriter, a single-purpose Raspberry Pi-based cyberdeck that serves only for distraction-free writing.

There’s not a lot in the way of descriptive text at the above link but in a way there doesn’t need to be as the photographs tell the story. A mechanical keyboard and a wide but not very tall display fit with the Pi in a fairly rudimentary wooden case, and running Focuswriter it leaves very little in the way of distraction. In that sense it’s not quite so much a cyberdeck in its application as something more like the smart digital typewriters from a few decades ago without the printer, but we can see that it makes for a very handy writing implement. Sadly the job of writing for Hackaday requires constant access to online sources on a larger screen, or we’d be tempted to try one ourselves.

The one-purpose writing computer is an idea we’ve seen before from time to time, for example in this one with an e-paper display.

The Birdy44 Keyboard Is Something To Crow About

October 18, 2023 by 6 Comments

The funny thing about keyboard end game is that it usually involves more than one keyboard. Rare is the board that is great for both home and away. Having finished their dactyl build, [RalphCoder13] was looking to build something slimmer and more portable, and the Birdy44 was born.

This hand-wired beauty uses a pair of Waveshare RP2040 Zeros and features a pair of 40mm Cirque track pads that were salvaged from a Steam controller.

As you may have guessed, there are 44 Kailh Chocs that sit underneath a combination of MBK and 3D-printed keycaps. Our favorite part might be the tenting legs, which are optional and connect magnetically.

Part of portability is how you decide to carry the thing. You probably don’t want it naked and loose in your backpack if you can avoid it, right? To that end, he designed a nice little case for the halves. The original plan was to use magnets to hold them in place inside the topless case, but that didn’t work out so well, so he added wide elastic bands to stretch around the case.

Is this still not portable enough for you? Check out this folding split keyboard.

Via KBD