Hackaday Podcast 027: Confusingly USB-C, Glowey Displays, Logically VGA, Hackers Who Changed Gaming

Hackaday Editors Elliot Williams and Mike Szczys dive into the most interesting hacks of the week. Confused by USB-C? So are we, and so is the Raspberry Pi 4. Learning VGA is a lot easier when abstract concepts are unpacked onto a huge breadboard using logic chips and an EEPROM. Adding vision to a prosthetic hand makes a lot of sense when you start to dig into possibilities of this Hackaday Prize entry. And Elliot gets nostalgic about Counter-Strike, the game that is a hack of Half-Life, grew to eclipse a lot of other shooters, and is now 20 years old.

Take a look at the links below if you want to follow along, and as always tell us what you think about this episode in the comments!

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Direct download (60 MB or so.)

Continue reading “Hackaday Podcast 027: Confusingly USB-C, Glowey Displays, Logically VGA, Hackers Who Changed Gaming”

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Hackaday Links: July 7, 2019

Like modular synths? Sure you do, and you need another hole to throw money into! For the last few months, Supplyframe has been hosting synthesizer and electronic music meetups in San Francisco. This week, the HDDG/Piqued meetup will have a great talk with the creator of VCV Rack. VCV Rack is an Open Source, virtual, modular synthesizer — basically a bunch of Eurorack modules inside a computer and it costs a whole lot less. The talk is this Thursday evening in SF. You should come!

The W600 is a new module (you can get it from Seeed, although it’s produced by Winner Micro in various formats) that is basically an ESP32, except it uses an ARM Cortex-M3 instead of a Tensilica core. [ultratechie] recently got their hands on one of these modules and got started with MicroPython. This seems like a capable module and it’s only three dollars, but will that be enough to catch up to the ESP32?

Purple gorilla enters art gallery. At the Het Nieuwe Instituut in Rotterdam there is a new exhibit featuring the, ‘destructive beauty of the computer virus’. The curators are detailing the historical progress of the computer virus from innocent DOS viruses to Melissa to Stuxnet and ransomware.

USB C has been around for a while, but 2019 is the year everything started to become USB C. Case in point: the Raspberry Pi 4. The only problem is that the Raspberry Pi Foundation messed up their implementation of USB C. Not a problem, because here’s how you design a USB C power sink. Basically, you give each CC line its own resistor. Don’t even think about it, just copy the USB C spec. You don’t know more about USB C than the people who designed it, and you’re not really saving a ton of money by deleting one resistor. Just copy the spec.

The Digital Polaroid SX-70

What do you do if you own an iconic and unusual camera from decades past? Do you love it and cherish it, buy small quantities of its expensive remanufactured film and take arty photographs? Or do you rip it apart and remake it as a modern-day digital camera in a retro enclosure? If you’re [Joshua Gross], you do the latter.

The Polaroid SX-70 is an iconic emblem of 1970s consumer technology chic. A true design classic, it’s a single-lens reflex design using a Polaroid instant film cartridge, and its party trick is that it’s a folding camera which collapses down to roughly the size of a pack of 1970s cigars. It was an expensive luxury camera when it was launched in 1972, and today it commands high prices as a collector’s item.

[Joshua]’s build is therefore likely to cause weeping and wailing and gnashing of teeth among vintage camera enthusiasts, but what exactly has he done? In the first instance, he’s performed a teardown of the SX-70 which should be of interest to many readers in itself. He’s removed the mirror and lens, mounted a Raspberry Pi camera behind the lens mount, and a small LCD monitor where the mirror would be.

A new plastic lens in the original lens housing completes the optics, and the electronics come courtesy of a Pi Zero, battery, and USB hub in the space where the Polaroid film cartridge would otherwise be. Some new graphics and a fresh leather cover complete the  build, giving what we’d say is a very tidy electronic Polaroid. On the software side there is a filter to correct for fisheye distortion, and the final photos have a slightly Lomographic quality from the plastic lens.

We like what he’s created with his SX-70 even if we can’t help wincing that he did it to an SX-70 in the first place. Maybe it’s less controversial when someone gives the Pi treatment to a more mundane Polaroid camera.

History of Sony 1970s

Retrotechtacular: History Of Sony Mini Doc Bursts With 1970s Style

The 1970s, it was a time when cameras needed film, phones had cords, and televisions masqueraded as furniture. A time where hi-fi systems were judged by the volume knob feel, and thanks to YouTube user [nefesh22] we have a behind-the-scenes glimpse of what the era was like from the Sony corporate perspective in this mini documentary of the company’s history below. The film was originally created for internal use at Sony’s US manufacturing facilities in San Diego, however, now it now can be watched by anyone with an internet connection.

Sony CRT Testing Rig 1970s

Sony’s corporate ethos of allowing its engineers to drive business innovation is on full display here. For instance how in 1950 Sony introduced the first magnetic tape recorder, the G-Type, in Japan and followed that up with the first portable television, the TV8-301, a decade later. Throughout the 1970s Sony became an innovator in the video space. In fact, the Sony Trinitron brand of color TVs garnered so much notoriety in the television industry that the company was awarded an Emmy in 1973. Though the most telling feature is the documentary’s focus on the 3/4-inch U-Matic videocassette format, a precursor to VHS and Sony’s own Betamax videotapes. Highlighting the “superiority” of those VTR systems of the day really does date the film as those hulking decks failed to penetrate the market beyond early adopters and media companies.

It’s interesting to see how hands-on quality assurance testing used to be. Whether it’s glancing at NPN transistors under a microscope, dialing in the focus on a Super 8 camera, or a quick wave of the degaussing wand before a tube leaves the line, each of the QA tasks were carried out by individual employees rather than the automated methods of today. On an unrelated note, the brief overview of the Sony’s on-site “fiefdom” for its young workforce is a reminder that some ideas may be better left in the past… Google’s Mountain View campus anyone? If anything is to be gleaned from this retrotechtacular retrospective is that we could all use a little more wood-grain in our electronics these days.

Continue reading “Retrotechtacular: History Of Sony Mini Doc Bursts With 1970s Style”

CPU Made From 74HC Chips Is A Glorious Mess

Did you ever start a project that you felt gained a life of its own? This project by [Paulo Constantino] is an entire CPU named dreamcatcher on breadboards, and is a beautiful jungle of digital. On top of that, it works to connect to an analog VGA display. How cool is that!

Designing an ALU and then a CPU is a typical exercise for students of digital design and is done using VerilogHDL or VHDL. It involves creating an ALU that can add, subtract etc while a control unit manages data moves and the like. There is also a memory fetch and instruction decode made up of de-mulitiplexers and a bunch of flip-flops that make up registers and flags. They are as complex as they sound if not more.

[Paulo Constantino] went ahead and designed the whole thing in Eagle as a schematic using 74HC logic chips. To build it though instead of a PCB he used breadboards. Everything from bus decoders to controlling an external VGA display is done using jumper wires. We did cover a video on the project a while back, but this update adds a video card interface to the build.

The CPU updates the display buffer on the VGA card, and in the video below shows the slow and steady update. The fact that the jungle of wires can drive a display is awesome. He has since started working on a 16-bit version of the processor and we’d love to see someone take it up a notch.

For those more accustomed to the PCB, the Z80 membership card project is a great build for 8-bit computer fans.

Thanks to [analog engineer] for the tip.

Continue reading “CPU Made From 74HC Chips Is A Glorious Mess”

Full Earth Disc Images From GOES-17 Harvested By SDR

We’ve seen lots of hacks about capturing weather images from the satellites whizzing over our heads, but this nicely written how-to from [Eric Sorensen] takes a different approach. Rather than capturing images from polar satellites that pass overhead a few times a day, this article looks at capturing images from GOES-17, a geostationary satellite that looks down on the Pacific Ocean. The fact that it is a geostationary satellite means that it captures the same view all the time, so you can capture awesome time-lapse videos of the weather.  Continue reading “Full Earth Disc Images From GOES-17 Harvested By SDR”

Hackaday Podcast 017: Are Cheap Microcontrollers Worth It? Android On Your Bike. Plus Food Printers And Coffee Bots

Join Editors Mike Szczys and Elliot Williams as they recount a week of fascinating hacks. We take a good look at the PMS150C, a microcontroller that literally costs pennies but can only be flashed once. SNES emulators have a new trick up their sleeves to make low-def a lot less low, and you retro enthusiasts will either hate or love the NES zapper chandelier. Elliot’s enamored by a bike computer running Android core, and both Mike and Elliot delve into the food hacking scene, be it meat, chocolate, coffee, or of course frosting!

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Take a look at the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Direct download (60 MB or so.)

Continue reading “Hackaday Podcast 017: Are Cheap Microcontrollers Worth It? Android On Your Bike. Plus Food Printers And Coffee Bots”