Category Archives: software hacks

Simple Quadcopter Testbed Clears The Air For Easy Algorithm Development

We don’t have to tell you that drones are all the rage. But while new commercial models are being released all the time, and new parts get released for the makers, the basic technology used in the hardware hasn’t changed in the last few years. Sure, we’ve added more sensors, increased computing power, and improved the efficiency, but the key developments come in the software: you only have to look at the latest models on the market, or the frequency of Git commits to Betaflight, Butterflight, Cleanflight, etc.

With this in mind, for a Hackaday prize entry [int-smart] is working …read more

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Posted in 2018 Hackaday Prize, algorithm, ardupilot, drone, drone hacks, lidar, localisation, mapping, quadcopter, ros, software hacks, testbed, The Hackaday Prize | Leave a comment

A Real Time Data Compression Technique

With more and more embedded systems being connected, sending state information from one machine to another has become more common. However, sending large packets of data around on the network can be bad both for bandwidth consumption and for power usage. Sure, if you are talking between two PCs connected with a gigabit LAN and powered from the wall, just shoot that 100 Kbyte packet across the network 10 times a second. But if you want to be more efficient, you may find this trick useful.

As a thought experiment, I’m going to posit a system that has a database …read more

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Posted in run length encoding, software hacks, xor | Leave a comment

Someone Set us Up the Compiler Bomb

Despite the general public’s hijacking of the word “hacker,” we don’t advocate doing disruptive things. However, studying code exploits can often be useful both as an academic exercise and to understand what kind of things your systems might experience in the wild. [Code Explainer] takes apart a compiler bomb in a recent blog post.

If you haven’t heard of a compiler bomb, perhaps you’ve heard of a zip bomb. This is a small zip file that “explodes” into a very large file. A compiler bomb is a small piece of C code that will blow up a compiler — in …read more

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Posted in malware, software hacks | Leave a comment

VCF East: The Mail Order App Store

Today we take the concept of a centralized software repository for granted. Whether it’s apt or the App Store, pretty much every device we use today has a way to pull applications in without the user manually having to search for them on the wilds of the Internet. Not only is this more convenient for the end user, but at least in theory, more secure since you won’t be pulling binaries off of some random website.

But centralized software distribution doesn’t just benefit the user, it can help developers as well. As platforms like Steam have shown, once you lower …read more

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Posted in retrocomputing, software hacks, VCF, VCF East, VCF East XIII | Leave a comment

Tiny Sideways Tetris on a Business Card

Everyone recognizes Tetris, even when it’s tiny Tetris played sideways on a business card. [Michael Teeuw] designed these PCBs and they sport small OLED screens to display contact info. The Tetris game is actually a hidden easter egg; a long press on one of the buttons starts it up.

It turns out that getting a playable Tetris onto the ATtiny85 microcontroller was a challenge. Drawing lines and shapes is easy with resources like TinyOLED or Adafruit’s SSD1306 library, but to draw those realtime graphics onto the 128×32 OLED using that method requires a buffer size that wouldn’t fit the ATtiny85’s …read more

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Posted in oled, pcb, software hacks, ssd1306, tetris | Leave a comment

Open-source Circuit Simulation

For simple circuits, it’s easy enough to grab a breadboard and start putting it together. Breadboards make it easy to check your circuit for mistakes before soldering together a finished product. But if you have a more complicated circuit, or if you need to do response modeling or other math on your design before you start building, you’ll need circuit simulation software.

While it’s easy to get a trial version of something like OrCAD PSpice, this software doesn’t have all of the features available unless you’re willing to pony up some cash. Luckily, there’s a fully featured free and open …read more

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Posted in psim, PSpice, qucs, simulation, software, software hacks, SPICE | Leave a comment

Spoofing Cell Networks with a USB to VGA Adapter

RTL-SDR brought cheap and ubiquitous Software Defined Radio (SDR) to the masses, opening up whole swaths of the RF spectrum which were simply unavailable to the average hacker previously. Because the RTL-SDR supported devices were designed as TV tuners, they had no capability to transmit. For the price they are still an absolutely fantastic deal, and deserve to be in any modern hacker’s toolkit, but sometimes you want to reach out and touch someone.

Now you can. At OsmoDevCon [Steve Markgraf] released osmo-fl2k, a tool which allows transmit-only SDR through cheap USB 3.0 to VGA adapters based on the Fresco …read more

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Posted in osmo-fl2k, radio hacks, RTL-SDR, sdr, software hacks, usb, vga | Leave a comment

When Detecting Lines Is Harder Than Expected

[Conor Patrick] is no stranger to hardware development, and he’s had an interesting project for the past few months. He’s attempting to create a tool to convert images of technical drawings (such as footprints for electronic components) into digital formats that can be imported into other tools. This could automate turning a typical footprint drawing like the one shown into an actual part definition in a CAD program, which could really speed up the creation of custom parts.

Key to the entire concept is the detection of lines in a black-and-white technical drawing. To some people this won’t sound like …read more

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Posted in KiCAD, line detection, part generation, software hacks | Leave a comment

Blueprints Make It Easy To Make (Some) Alexa Skills

If you can code, you can create an Alexa skill — the programs that allow an Amazon Echo or similar device interact with you. What if you can’t code or you are just too lazy to do all the setup? Amazon now has Blueprints that can help anyone make a skill. The only problem is the skills you can create are pretty limited. In addition, they are only available to your Alexa devices.

The idea is simple. You start with a template — OK, a blueprint. This is a model application that does something like giving you a compliment or …read more

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Posted in Skill, Software Development, software hacks | Leave a comment

TensorFlow in your Browser

If you want to explore machine learning, you can now write applications that train and deploy TensorFlow in your browser using JavaScript. We know what you are thinking. That has to be slow. Surprisingly, it isn’t, since the libraries use Graphics Processing Unit (GPU) acceleration. Of course, that assumes your browser can use your GPU. There are several demos available, include one where you train a Pac Man game to respond to gestures in your webcam to control the game. If you try it and then disable accelerated graphics in your browser options, you’ll see just what a speed up …read more

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Posted in javascript, machine learning, neural network, Software Development, software hacks, tensor flow, tensorflow | Leave a comment