The Automatic Battery Charger You Never Knew You Needed

When we saw [Max.K]’s automatic NiMh battery charger float past in the Hackaday tips line, it brought to mind a charger that might be automatic in the sense that any modern microcontroller ba…

Teaching A Pi Pico E-Ink Panel New Tricks

We’ve noticed that adding electronic paper displays to projects is getting easier. [NerdCave] picked up a 4.2-inch E-ink panel but found its documentation a bit lacking when it came to using …

PicoROM, A DIP-32 8-Bit ROM Emulator

As we all know, when developing software for any platform or simply hacking a bit of code to probe how something works, the ability to deploy code rapidly is a huge help. [Martin Donlon], aka [wick…

M.2 Makes An Unusual Microcontroller Form Factor

When we think of an m.2 slot in our laptop or similar, it’s usually in the context of its PCI connectivity for high-speed applications such as solid state disks. It’s a connector that o…

An RP2040-based PC-FX Development Cartridge

[David Shadoff] has a clear soft spot for the NEC console systems and has been collecting many tools and data about them. When developing with these old systems, having a way to upload code quickly…

Use PicoGlitcher For Voltage Glitching Attacks

We see a fair few glitcher projects, especially the simpler voltage glitchers. Still, quite often due to their relative simplicity, they’re little more than a microcontroller board and a few …

An SAO For Hams

Generally speaking, the Hackaday Supercon badge will always have a place for SAO (rebranded as “Supercon add-ons”), and that makes sense. We did originate them, after all. This year, th…

Easily Program RP2040 Boards With Your Android Device

You could write your microcontroller code on your desktop PC, or you could do it on your laptop on the go. Or, if you want to get really portable about things, you could write your embedded code on…

Supercon 2023 – Going Into Deep Logic Waters With The Pico’s PIO And The Pi’s SMI

The Raspberry Pi has been around for over a decade now in various forms, and we’ve become plenty familiar with the Pi Pico in the last three years as well. Still, these devices have a great d…

Switch Your RP2040 Between 3.3 V And 1.8 V

Ever want to build a RP2040 devboard that has everything you could ever want? Bad news,  “everything” also means adding 1.8 V GPIO voltage support. The good news is that this write-up b…

Microsoft Sculpt Keyboard Lives Again With RP2040

Hackaday readers are likely the kind of folks that have a favorite keyboard, so you can probably imagine how devastating it would be to find out that the board you’ve sworn by for years is go…

Get More Freedom With This Guitar Pedal

When the electric guitar was first produced in the 1930s, there was some skepticism among musicians as to whether or not this instrument would have lasting impact or be a flash-in-the-pan novelty. …

2024 Tiny Games Contest: Salsa One Handheld Requires No PCB

If you’re thinking about building a single tiny game or even a platform, you might be tempted to use a single button for everything. Such is the case with [Alex]’s Salsa ONE minimalist …

A Look At The Intel N100 Radxa X4 SBC

Recently Radxa released the X4, which is an SBC containing not only an N100 x86_64 SoC but also an RP2040  MCU connected to a Raspberry Pi-style double pin header. The Intel N100 is one of a range …

Particle Physics On A Small, Affordable PCB

Experimenting in the world of particle physics probably brings to mind large, expensive pieces of equipment like particle accelerators, or at least exotic elements or isotopes that most of us can&#…

Keebin’ With Kristina: The One With The Tasty Snacks Board

[MakerM0]’s LangCard is an entry into our 2024 Business Card Challenge that just so happens to fit the Keebin’ bill as well. You might label this a pocket cyberdeck, and that’s ju…

An Open XBOX Modchip Enters The Scene

If you’ve ever bought a modchip that adds features to your game console, you might have noticed sanded-off IC markings, epoxy blobs, or just obscure chips with unknown source code. It’s…

Probably The Cheapest Mac Emulation Hardware

There are many ways to build your own Macintosh clone, and while the very latest models remain a little inaccessible, there are plenty of Intel-based so-called “Hackintoshes” which deli…

2024 Business Card Challenge: Who Do You Love?

When you hand your new acquaintance one of your cards, there’s a chance you might feel an instant connection. But what if you could know almost instantly whether they felt the same way? With …

A Scope Test Tool You Can Build With Just A Pico

Ever wanted to see how well your oscilloscope adheres to its stated capabilities? What if you buy a new scope and need a quick way to test it lest one of its channels its broken, like [Paul Wasserm…