The Google Chrome Dinosaur Game, In Real Life

August 6, 2020 by Orlando Hoilett 6 Comments

[Ryan] wanted to hack the Google Chrome Dinosaur Game so he could control the dinosaur with his own movements. The game only requires two keyboard presses (up and down arrow keys), so controlling the game with the Arduino Keyboard library only requires a few simple function calls.

He uses the Arduino MKR board in his build, but notes any number of other boards would work as well. A force sensor detects his jumps and a stretch sensor detects him ducking. Both the stretch and force sensors are resistive transducers, so two simple voltage divider circuits (one for each sensor) are needed to convert changes in force to a voltage. You may need to adjust the sensor threshold to ensure the code responds to your movements, but [Ryan] makes that pretty easy to do in software as both thresholds are stored as global variables.

It’s a pretty simple hack, but could make for some good socially-distanced fun. What other hackable Google Chrome extensions do you like?

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3D Printed ESP8266 TV Is A Blast From The Past

July 23, 2020 by Tom Nardi 16 Comments

We’ve often said that one of the best applications for desktop 3D printing is the production of custom enclosures, but you certainly aren’t limited to an extruded version of the classic Radio Shack project box. As [Marcello Milone] shows with this very clever retro TV enclosure for the Wemos D1 Mini, 3D printing means your imagination is the only limit when it comes to how you want to package up your latest creation.

As nice as the printed parts are, it’s the little details that really sell the look. [Marcello] has bent a piece of copper wire into a circle to make a faux antenna with vintage flair, and while the ESP is connecting to the WiFi network, it even shows an old school TV test pattern on its 1.8″ TFT display.

In the video after the break you can see the device go through its startup routine, and while displaying the Hackaday Wrencher at boot might not be strictly on theme…we’ll allow it.

While you could certainly use this little enclosure for whatever ESP project you had in mind, [Marcello] says he’s building a distributed environmental monitoring network using HTU21D temperature and humidity sensors. It sounds like he’s still working on the software side of things though, so hopefully he posts an update when the functionality is fully realized.

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Modern Mice On Old Computers

July 14, 2020 by Bryan Cockfield 23 Comments

Getting retro hardware up and running again is sometimes a feat, and the amount of effort needed tends to go up exponentially with increased hardware age. Getting an IDE hard drive running again is one thing, but things like peripherals on truly “retro” computers like Commodores and Amigas is another beast altogether if you even have a 30-year-old mouse still lying around. That’s why adapters like Project mouSTer are here to help you connect modern USB hardware to truly ancient computers.

This piece of equipment was built for the Atari ST (hence the name), a ~~8-bit~~ computer from the mid-80s. It mates a DB9 plug with USB via a small microcontroller which does the translating. The firmware can be flashed over the USB connection so there’s planned support for other machines of this vintage. The chip supports all the features the original mouse did, too, including PS4 pad support and support for joysticks, and comes in an impressively tiny package once assembled which blends in seamlessly.

The project is a great step to getting retro computers working again, even if you can’t find exact OEM replacements anymore. That’s a common problem, and we’ve seen this solved in other ways for other old Ataris. It’s not uncommon to put modern power supplies in retro computers, either, as long as they power up and work after everything’s wired together.

Back To Basics Hack Chat

July 13, 2020 by Dan Maloney 24 Comments

Join us on Wednesday, July 15 at noon Pacific for the Back to Basics Hack Chat with Simplifier!

Stay in the technology business long enough and eventually you’ll have to face an uncomfortable question: “Have I built anything permanent?” Chances are good that most of us will have to answer in the negative. For all the flash and zazzle we put into our projects, and for all the craftsmanship we try to apply to our systems, all of it is built on a very fragile foundation of silicon that will be obsolete within a decade, held together by slender threads of code in a language that may or may not be in fashion in a year’s time, and doesn’t even really exist in anything more tangible than a series of magnetic domains on a hard drive somewhere.

Realizing you’ve built nothing permanent is the engineer’s equivalent of a midlife crisis, and for many of us it sets off a search for an outlet for our creativity that we can use to make things that will outlast us. One hacker, known only as “Simplifier”, turned his search for meaningful expression into a quest to make technology better by making it more accessible and understandable. His website, itself a model of simplicity, catalogs his quest for useful materials and methods and his efforts to employ them. He has built everything from homebrew vacuum tubes to DIY solar cells, with recent forays into telecom tech with his carbon rod microphone and magnetostrictive earphone.

In this Hack Chat, Simplifier will answer your questions about how turning back the technology clock can teach us about where we’re going. Join us as we explore what it takes to build the infrastructure we all take so much for granted, and find out if there’s a way to live simply while still enjoying a technologically rich life.

Our Hack Chats are live community events in the Hackaday.io Hack Chat group messaging. This week we’ll be sitting down on Wednesday, July 15 at 12:00 PM Pacific time. If time zones have you down, we have a handy time zone converter.

Click that speech bubble to the right, and you’ll be taken directly to the Hack Chat group on Hackaday.io. You don’t have to wait until Wednesday; join whenever you want and you can see what the community is talking about.

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Gaming In Different Languages

July 7, 2020 by Bryan Cockfield 2 Comments

One of the perks of using older hardware is its comparative simplicity and extensive documentation. After years or decades of users programming on a platform, the amount of knowledge available for it can become extensive. This is certainly the case with the 6502 microprocessor, used in old Apple computers and some video game systems from the ’80s. The extensive amount of resources available make it a prime candidate in exploring various programming languages, and their advantages and disadvantage.

This project looks into those differences using a robot game, which has been programmed four different ways in three languages. [Joey] created the game in Python first and then began to port it to the 65C02, a CMOS variant of the 6502. The first iteration is its assembly language, and then a second iteration with optimized assembly code. From there, he ports it to C and then finally to Forth. Each version of the game is available to play in a browser using an emulator to run the 6502 hardware.

Since the games run in the browser, other tools are available to examine the way the game runs in each language. Registers can be viewed in real time, as well as the values stored in the memory. It’s an interesting look at an old piece of hardware and of its inner workings. For an even deeper dive into the 6502, it’s possible to build a working computer on breadboards using one.

Reliving Heathkit’s Glory Days Through A Teardown And Rebuild

June 26, 2020 by Dan Maloney 10 Comments

In its heyday, the experience offered by the Heath Company was second to none. Every step of the way, from picking something out of the Heathkit catalog to unpacking all the parts to final assembly and testing, putting together a Heathkit project was as good as it got.

Sadly, those days are gone, and the few remaining unbuilt kits are firmly in the unobtanium realm. But that doesn’t mean you can’t tear down and completely rebuild a Heathkit project to get a little taste of what the original experience was like. [Paul Carbone] chose a T-3 Visual-Aural signal tracer, a common enough piece that’s easy to find on eBay at a price mere mortals can afford. His unit was in pretty good shape, especially for something that was probably built in the early 1960s. [Paul] decided that instead of the usual recapping, he’d go all the way and replace every component with fresh ones. That proved easier said than done; things have changed a lot in five decades, and resistors are a lot smaller than they used to be. Finding hookup wire to match the original was also challenging, as was disemboweling some of the electrolytic cans so they could be recapped. The finished product is beautiful, though — even the Magic Eye tube works — and [Paul] reports that the noise level is so low he wasn’t sure if turned it on at first.

We’ve covered the rise and fall of Heathkit, as well as their many attempted comebacks, including an inexplicable solder-free radio and the “world’s most reliable” clock. Looking at these offerings, we think [Paul] may be onto something here.

A Pocket Retro Computer Anyone Can Build

June 4, 2020 by Tom Nardi 14 Comments

Not satisfied with any of the DIY retro computer kits on the market, [Leonardo Leoni] decided to make his own. Built using only the finest through-hole technology and powered by the ATmega328 microcontroller, his diminutive 8-bit computer is easy to build and even easier to develop for. Whether you’re looking to hone your BASIC skills or play some Zork on the bus, this little computer looks like a great project for anyone who has a soft spot for computing’s simpler days.

All things considered, using this tiny machine looks like it would be relatively pleasant. [Leonardo] is using a common SH1106 OLED display, and there’s a full QWERTY keyboard (with number row) done up with tactile momentary buttons. There’s very few passive components involved in the build, which is sure to be appealing to new players; especially after they’ve finished soldering all those switches to the board.

On the software side, [Leonardo] says he leaned heavily on open source projects to get his machine up and running. Beyond the hardware drivers for things like the display, he specifically calls out the Tiny Basic and Tiny Lisp Computer projects for their code. If small-scale programming isn’t your style, the machine is compatible with the Arduino IDE so you can easily throw something else on it. If you’ve ever dreamed of a QWERTY Arduboy, this might be your chance.

From the way [Leonardo] describes the computer, which he calls the Cobalt 3, we get the impression a commercial kit might be in the cards. We hope the community shows enough interest to make it happen. After all, not everyone was able to make it to Hackaday Belgrade 2018 to get their own pocket retro computer.