Supercon 2023: Teaching Robots How To Learn

Once upon a time, machine learning was an arcane field, the preserve of a precious few researchers holed up in grand academic institutions. Progress was slow, and hard won. Today, however, just abo…

Compact Driver Powers Steppers With USB-C PD

NEMA-17 steppers are (almost) a dime a dozen. They’re everywhere, they’re well-known to hackers and makers, and yet they’re still a bit hard to integrate into projects. That&#8217…

2024 Tiny Games Contest: Are You A Good Judge Of Time?

What can you do with a one-button keyboard? Quite a bit, actually, especially if that key has a little screen on it. That’s the idea behind [Maker M0]’s MagicClick macro pad, which is a…

The Last Instrument To Get Auto-Tuned

Various decades have their musical signature, like the excessive use of synthesizers and hairspray in the 1980s pop music scene. Likewise, the early 2010s was marked by a fairly extreme use of auto…

SIMD-Accelerated Computer Vision On The ESP32-S3

One of the fun parts of the ESP32-S3 microcontroller is that it got upgraded to the newer Cadence Xtensa LX7 processor core, which turns out to have a range of SIMD instructions that can help to si…

ESP-Hosted Turns ESP32 Into Linux WiFi/BT Adapter

While we are used to USB WiFi adapters, embedded devices typically use SDIO WiFi cards, and for good reasons – they’re way more low-power, don’t take up a USB port, don’t re…

An Easy Transparent Edge Lit Display

Displays are crucial to modern life; they are literally everywhere. But modern flat-panel LCDs and cheap 7-segment LED displays are, well, a bit boring. When we hackers want to display the progress…

ESP32 Powers Single-PCB ZX Spectrum Emulator

When word first got out that the Chinese board houses were experimenting with full color silkscreens, many in our community thought it would be a boon for PCB art. Others believed it would be akin …

PCB Design Review: ESP32-S3 Round LCD Board

For our next installment, I have a lovely and daring PCB submitted by one of our readers, [Vas]. This is an ESP32-S3 board that also has an onboard round TFT display, very similar to the one we use…

Single-Button Keyboard Has Multiple Uses

Well now why would I want a single-button keyboard, you might be asking yourself. We say it all depends on how you build the thing, and how you program it. Would you believe that the MagiClick by […

Card/IO Is A Credit Card-Sized, Open Source ECG Monitor

Of all the electrical signals generated by the human body, those coming from the heart are probably the most familiar to the average person. And because it’s also quite simple to implement th…

2023 Hackaday Prize: A Reusable Plant Monitor

[Ovidiu] cares for their house plants, trying to dial in the perfect soil humidity and light levels. However, many cheap monitors tend to rust after a few weeks of sitting in a damp, slightly acidi…

An ESP32 Dev Board As A Framework Laptop Module

The Framework laptop will no doubt already have caught the eye of more than one Hackaday reader, as a machine designed for upgrade and expansion by its users. One of its key features is a system of…

Much Better VGA From An ESP32

The ESP32 series from Espressif have been a successful line of products, offering a powerful microcontroller with on-chip wireless networking. There’s a snag though in their practice of calli…

Hackaday Prize 2023: Sleek Macro Pad Makes 2FA A Little Easier

We all know the drill when it comes to online security — something you know, and something you have. But when the “something you have” is a two-factor token in a keyfob at the bot…

Hackaday Prize 2023: Sleek Macro Pad Makes 2FA A Little Easier

We all know the drill when it comes to online security — something you know, and something you have. But when the “something you have” is a two-factor token in a keyfob at the bot…

Supercon 2022: Mooneer Salem Goes Ham With An ESP32

After being licensed as a ham radio operator since the early 2000s, you tend to start thinking about combining your love for the radio with other talents. In a 20-minute talk at Hackaday Supercon 2…