Misc Hacks

4197 Articles

Sci Fi UI Made Easy With Arwes

June 29, 2023 by 18 Comments

Many of us grew up watching Star Trek, marvelling at the beautiful colorful interfaces on the computers that ran the Starship Enterprise. Today’s computer interfaces have certainly grown fancier since the Windows 3.1 and Mac System 7 days, but they’re still nowhere near that gorgeous. The Arwes framework aims to change that, at least where web apps are concerned.

The framework is inspired by the cyberprep and synthwave aesthetics, while drawing from media like TRON: Legacy and Halo. You can get a peek at what it can do on the Arwes website, or look at how it runs on sites like SoulExtract or the Cyber Movie Database. It’s very much about glowing lines, 1980s computer sounds, and screens with animated text fills.

It’s still in an alpha release, and likely isn’t yet ready for business-critical production use. It currently consists of a set of basic components that can be assembled into a functional futuristic website design, but you’ll need some experience to use the tools at hand. There’s a sandbox for experimenting that should help in that regard.

You might just find that it’s the perfect tool to create an interface for your very own cyberdeck, or you might put it to work on your next website design. Either way, if you create something fantastic, don’t hesitate to drop us a line.

 

A BASIC Interpreter For The Raspberry Pi Pico

June 28, 2023 by 38 Comments

It’s pretty easy to program the Raspberry Pi Pico in Python, or you can use C or C++ if you so desire. However, if you fancy the easy language of yesteryear, you might like PiccoloBASIC from [Gary Sims].

Putting it simply, piccoloBASIC is a BASIC interpreter that runs on the Raspberry Pi Pico. It features all the good bits of BASIC such as GOTO and GOSUB commands, that fancier languages kind of look down upon. It’s also got enough built-in routines to handle regular programming life, like sleeps, delays, a basic pseudorandom number source, trigonometric functions, and the ability to deal with floating point numbers. As far as microcontroller tasks go, it’s got rudimentary support for talking to GPIOs right now via the pinon and pinoff commands. However, it’s probably not the way to go if you want to bit-bang an SD card to within an inch of its speed rating.

Down the road, [Gary] hopes to add support for features like the Pico’s I2C, SPI, and PIO hardware, along with networking protocols and Bluetooth. PEEK and POKE are also hopefully on the way for those that like to fiddle with memory directly.

Meanwhile, if you’re looking for a different yet similar take, explore the port of MMBasic to the Pico platform. Video after the break.

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Portable Soldering Station Runs On Drill Batteries

June 22, 2023 by 37 Comments

Power tool batteries are a convenient portable power supply for all manner of different things. [Zachary Goode] noticed that Ryobi was using them to power soldering irons, but no such tool existed in the DeWalt range. Thus, he set about to build such a rig himself.

The build relies on a simple 3D-printed adapter to suck power from a DeWalt drill battery. It’s a little piece of plastic with spade terminals inserted to act as the contacts. Armed with this tool, [Zachary] included it as part of a simple compact portable soldering iron design that relies on the off-the-shelf T12-952 controller board. This allows him to use the rig with a wide variety of common soldering iron handpieces, like his favored Hakko FX-951. The design also features a lithium-ion battery protection circuit of [Zachary]’s own design, to make up for the fact that DeWalt don’t integrate them into their battery packs.

The high power density of lithium rechargeable batteries has led to a proliferation of portable soldering irons in recent years. Some are even completely handheld, with no external wires or power supplies to speak of. If you’ve been whipping up your own gear to solder on the go, don’t hesitate to drop us a line!

Behind The X86 Pipeline Curtain

June 19, 2023 by 12 Comments

We’ve often heard that modern x86 CPUs don’t really execute x86 instructions. Instead, they decode them into RISC instructions that are easier to schedule, pipeline, and execute. But we never really looked into that statement to see if it is true. [Fanael] did, though, and the results are very interesting.

The post starts with a very simple loop containing four instructions. In a typical RISC CPU — RISC-V — the same loop requires six instructions. However, a modern CPU is likely to do much more than just blindly convert one instruction set to another.

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BIOS POST Card Built Using Raspberry Pi Pico

June 13, 2023 by 18 Comments

A computer’s BIOS includes basic diagnostic tools for troubleshooting issues. Often, we rely on the familiar beeps from the POST system for this reason. However, error codes are also available via hardware “POST Cards” that were particularly popular in the 1990s. [Mr. Green] has now built a POST card using readily-available modern hardware.

[Mr. Green] built the device to help troubleshoot an x86 based firewall appliance that was having trouble. Like many x86 systems, it featured a Low Pin Count (LPC) bus which can be used to capture POST troubleshooting codes. By hooking up a Raspberry Pi Pico to the LPC bus on the firewall’s motherboard, it was possible to get it to display the POST error codes on some LEDs. This is of great use in the absence of a conventional PC speaker to sound the error out with beeps.

The build can be used for POST-based troubleshooting on any x86 system with an LPC bus. Files are on Github for those eager to replicate the build. We’ve seen similar work before, too. Video after the break.

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Arduino-Powered Missile System Uses Ultrasound To Aim

June 13, 2023 by 14 Comments

In the real world, missile systems use advanced radars, infrared sensors, and other hardware to track and prosecute their targets. [Raspduino Uno] on YouTube has instead used ultrasound for targeting for an altogether simpler desktop fire control solution.

This fun build uses a common off-the-shelf USB “missile launcher” that fires foam darts. To supply targeting data for the launcher, an Arduino Uno uses an ultrasonic sensor pair mounted atop a servo. As the servo rotates, the returns from the ultrasonic sensor are plotted on a screen run by a Raspberry Pi. If an object is detected in the 180-degree field of view of the sweeping sensor, a missile is fired using the dart launcher.

It’s a relatively simple build, but nonetheless would serve as a useful classroom demonstration of radar-like targeting techniques to a young audience. Real military hardware remains altogether more sophisticated. Video after the break.

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Cheap USB Sniffer Has Wireshark Interface

June 13, 2023 by 31 Comments

If you’ve done any development on USB hardware, you’ve probably wished you could peek at the bits and bytes as they pass through the data lines. Sometimes, it’s the only way to properly understand what’s going on. [ataradov]’s USB sniffer is built to do just that. 

To sniff high-speed USB communications, the device relies on a Lattice LCMXO2 FPGA and a Cypress CY7C68013A microcontroller, paired with a Microchip USB3343 USB PHY. This setup is capable of operating at data rates of up to 40-50 MB/s, more than enough to debug the vast majority of USB peripherals on the market.

The device is built specifically for use with Wireshark. Most commonly used for network packet sniffing, Wireshark can also be used with a wide variety of other capture hardware for other debugging tasks, as seen here. In addition to live sniffing, it also allows captured data to be saved for later analysis.

If you need this tool, spinning up your own is straightforward. Gerber files are available and the required components can be bought off the shelf. Once assembled, you can program the chips via USB, with no external hardware programmer required.

We’ve seen some other similar hardware before. Meanwhile, if you’re whipping up your own useful debug tools, don’t hesitate to drop us a line!