VCF West: All The Floptical Disks

August 6, 2018 by Brian Benchoff 47 Comments

Nowadays, if you want to transfer a file from one computer to another, you’d just send it over the network. In those rare occasions where that won’t work, a USB thumb drive will do. It wasn’t always this way, and it was much more confusing; back in the day when we had floppy drives. We had floptical drives. A single unlabeled 3.5″ floppy disk could be formatted as 360, 720, or 1440k IBM drive, a 400, 800, or 1440k Macintosh drive, an Apple II volume, or an Amiga, or an Acorn, or a host of other logical formats. That’s just one physical format of a floppy disk, and there are dozens more.

For this year’s VCF West, [Foone], hardware necromancer and collector of rare and esoteric removable storage formats, brought out the goods. He has what is probably the most complete collection of different floppy drive formats on the planet, and they were all out on display this weekend.

Continue reading “VCF West: All The Floptical Disks” →

VCF West: Adding A Front Panel To The 6502

August 5, 2018 by Brian Benchoff 19 Comments

When you think about vintage computers from the 1970s, the first thing that should spring to mind are front panels loaded up with switches, LEDs, and if you’re really lucky, a lock with a key. Across all families of CPUs from the ’70s, you’ll find front panel setups for Z80s and 8080s, but strangely not the 6502. That’s not to say blinkenlights and panel switches for 6502-based computers didn’t exist, but they were astonishingly rare.

If something hasn’t been done, that means someone has to do it. [Alexander Pierson] built The Cactus, a 6502-based computer that can be controlled entirely through toggle switches and LEDs.

If you’re wondering why something like this hasn’t been built before, you only have to look at the circuitry of the 6502 CPU. The first versions of this chip were built with an NMOS process, and these first chips included bugs, undefined behavior, and could not be run with a stopped clock signal. These problems were fixed with the next chip spin using a CMOS process (which introduced new bugs), but the CMOS version of the 6502 would retain the contents of its registers with a stopped clock signal.

The specs for the Cactus computer are what you would expect from a homebrew 6502 system. The chip is a WDC 65C02S running at 1MHz, there’s 32k of RAM and a 16k EPROM, dual 6551s give serial access at various baud rates, and there are 16 bits of parallel I/O from a 65C22 VIA. The ROM is loaded up with OSI Basic. The real trick here is the front panel, though. Sixteen toggle switches allow the front panel operator to toggle through the entire address space, and eight flip switches can set any bit in the computer. Other controls include Run, Halt, Step, Examine, and Deposit, as you would expect with any front panel computer.

It’s a fantastic piece of work which I missed seeing at VCF East so I’m really glad [Alexander] made the trip between coasts. Cactus is truly something that hasn’t been done before. Not because it’s impossible, but simply because the state of the art technology from when the 6502 was new didn’t allow it. Now we have the chips, and the only limitation is finding someone willing to put in the work.

Unofficial Badges Get Official Recognition At DEF CON: Badge Life Contest

August 3, 2018 by Mike Szczys 3 Comments

Badge·Life (noun): the art of spending too much time, energy, money, and creativity to design and produce amazing custom electronics and get them into the hands of those who appreciate incredible craftsmanship.

Brand new to DEF CON 26 is the Badge Life Contest to celebrate the creativity and ingenuity that gets poured into a custom badge.

For years, #BadgeLife has been flying under the radar at DEF CON. A growing movement of creative designers have put in late nights, emptied pocket books, and agonized over production, shipping, lanyards, boxes, batteries, programming woes, and every other kind of problem you can image to bring hundreds of unofficial badges to the conference. These aren’t a secret, the whole point is to wear blinky badges, often loaded with cryptographic puzzles and wireless interactivity, around your neck. For many, acquiring an awesome badge is a must-do to make their con a successful one. But DEF CON hasn’t officially recognized BadgeLife, until now.

If you’re a badge creator, you should show off your badge as part of the contest. It’s an opportunity to let more people see all the details that make each badge a work of art. During the con, most people will only see badges as they walk past them in the hallway. For the contest, all badges will be on display in the Hardware Hacking Village during the weekend to provide a close look for everyone.

The judging panel for this is an incredible slate of talented and well-known people from the hardware community. It doesn’t look like those names have been made public yet, but I’m honored and humbled to be among them. Help kick this inaugural year of the Badge Life Contest off right. You can submit your badge information now and deliver one badge (which will be returned to you) for display by 5 pm PDT on Friday 8/10.

Hackaday Belgrade: Sophi Kravitz’s Blimp Army

August 2, 2018 by Jenny List 12 Comments

Building things that fly is hard. The constraints on small, battery powered, radio-operated gear already presents a challenge, but adding weight, balance, and aerodynamic constraints takes it to a whole new level. Sophi Kravitz rises to the occasion and discusses each challenge of building a blimp from start to finish in her presentation at the 2018 Hackaday Belgrade conference.

One of the pleasures of writing for Hackaday comes through the incredible array of talent and experience to be found among our colleagues. We all do our own work, but one is humbled by that which flows from the benches of those one works alongside. Just such a project is the Remote Control Mini Blimp from our colleague Sophi Kravitz. It’s a game involving an obstacle course and a set of remote-controlled blimps. The challenges in such an endeavour have been pushing the limits of what is possible with off-the-shelf components. Continue reading “Hackaday Belgrade: Sophi Kravitz’s Blimp Army” →

SMD Soldering Challenge Lands At DEF CON

August 2, 2018 by Mike Szczys 42 Comments

Strap on the jeweler’s loupe and lay off the caffeine for a few days. You’ll need to be at your peak for the SMD Soldering Challenge at this year’s DEF CON (number 26 for those counting).

It’s exciting to see that a Soldering Skills Village has been added to the conference this year. It will be in the same room as the Hardware Hacking Village. After all, who doesn’t want to solder at a conference? This soldering challenge is a great way to ring in the new village, and will take place in eight heats of six people for a total of 48 contestants. If you want to compete, make sure you get to the village right away and sign up for a slot!

A familiar board is being used for the contest. It’s the SMD Challenge board which MakersBox developed. You can check out the Hackaday.io project page and even order one from their Tindie store if you like. The contest will be scored based on time, completion, functionality, precise orientation, and quality of the joints.

The SOIC ATtiny85 is a snap to place on the board, but things get harder with each step. To successfully complete it you need to solder both a resistor and an LED in 1206, 0805, 0603, 0402, and 0201 packages. Those oh-two-oh-ones are basically grains of sand… good luck with that! We’re really excited that MakersBox rolled some custom Hackaday and Tindie boards (pictured above) for this contest which we’re honored to sponsor. It sounds as if the winners will be announced during Hackaday and Tindie’s traditional Breakfast at DEF CON which is happening at 10:30am on Sunday in the HHV.

We plan to spectate during some of the heats and if you’re at the con you should too! For those participating, here’s our advice. Practice soldering the smallest of parts ahead of time (watch some videos on it at the very least). Bring a multimeter to test the diode polarity because you won’t be able to see the symbols on the smallest parts. You may even consider bringing some custom tools; this surface mount “clamp” comes to mind, you’ll just need a much smaller version.

If you have advice of your own, we’d love to hear it in the comments below!

This Weekend: The Vintage Computer Festival West

August 1, 2018 by Brian Benchoff 3 Comments

This weekend it’s all going down at the Vintage Computer Museum in Mountain View, California. The Vintage Computer Festival West is happening this weekend

What’s going on this year at VCF West? Far too much. The exhibits include everything from floptical disks, a fully restored and operation PDP-11/45, home computers from the UK and Japan, typewriters converted into teletypes, a disintegrated CPU, and LISP machines. The talks are equally spectacular, with a keynote from [Tim Paterson], the creator of 86-DOS, the basis of MS-DOS. You’ll also hear about PLATO, the Internet before the Internet, PDP-1 demonstrations, and if we’re lucky they’re going to fire up the ancient IBM 1401. There will also be a vintage computer consignment, which is at least as interesting as the exhibits. The consignment is basically a museum, but you can buy the exhibits.

VCF West is happening this weekend at the Computer History Museum in Mountain View, itself a worthy destination for a day trip. For one weekend a year, though, the Computer History Museum is taken over by VCF attendees and becomes the greatest place to learn about this history of computing. They even have one of those Waymo bug cars in their autonomous vehicle exhibit.

All of this is going down this Saturday and Sunday, starting at 9am. Tickets are $20 for one day, $30 for the entire weekend, and yes, that includes admission to the Computer History Museum. Don’t miss out!

Hackaday Belgrade: Luka Mustafa On Exploiting IoT Niches

July 26, 2018 by Dan Maloney 3 Comments

Ecology is a strange discipline. At its most basic, it’s the study of how living things interact with their environment. It doesn’t so much seek to explain how life works, but rather how lives work together. A guiding principle of ecology is that life finds a way to exploit niches, subregions within the larger world with a particular mix of resources and challenges. It’s actually all quite fascinating.

But what does ecology have to do with Luka Mustafa’s talk at the 2018 Hackaday Belgrade Conference? Everything, as it turns out, and not just because Luka and his colleagues put IoT tools on animals and in their environments to measure and monitor them. It’s also that Luka has found a fascinating niche of his own to exploit, one on the edge of technology and ecology. As CEO of Institute IRNAS, a non-profit technology development group in Slovenia, Luka has leveraged his MEng degree, background in ham radio, and interest in LoRaWAN and other wide-area radio networks to explore ecological niches in ways that would have been unthinkable even 10 years ago, let alone in the days when animal tracking was limited by bulky radio collars.