Fail of the Week: WinCE is a Noun and a Verb

A few years ago, [localroger] found some incredible hardware on sale: a very tiny laptop with a seven-inch screen, full keyboard, trackpad, Ethernet, WiFi, USB (with support for a lot of HID devices), and a battery that would last hours. They were on sale for $30 USD, and [localroger] bought four of them. A great deal, you say? These machines ran Windows CE. No, owning a WinCE device is not the Fail of the Week.

Figuring he should do something with these machines, [roger] thought, ‘a clock will do’, and began to figure out how to program or write an app for these things. These tiny netbooks did come with a programming language, JavaScript, in the form of the built-in IE6 web browser. This was actually a really, really good solution – WinCE apps formatted for portrait displays just didn’t work with the ‘widescreen’ laptop, and a hand-coded HTML table is probably the best solution anyone could have hoped for.

These machines – [roger] used three of them over the years as alarm clocks – did their job well, even if NTP had been left out of the OS image. The real fail here comes from buying a $30 WinCE netbook, and using it for something as mission critical as an alarm clock. The displays burned in, the batteries began puffing up, one unit somehow wouldn’t allow IE to run (probably a bad Flash chip), and the trackpad in another one sent the cursor on a random walk. You get what you pay for.

These WinCE netbooks have finally been put out to pasture, hopefully the same one laser printers go to. It’s all for the best, though; [roger] made a much better alarm clock with Nixies.

2013-09-05-Hackaday-Fail-tips-tileFail of the Week is a Hackaday column which runs every now and again. Help keep the fun rolling by writing about your past failures and sending us a link to the story — or sending in links to fail write ups you find in your Internet travels.

TwinTeeth: The Delta Bot PCB Factory

There are a few all-in-one CNC/milling/plotting/3D printing/engraving bots out there that claim to be mini factories for hobbyists, prototypers, and other homebrew creators. The latest is Diyouware’s TwinTeeth, a bot obviously inspired by a few 3D printers, but something that has a few interesting features we hope will propagate through the open hardware ecosystem.

The design of the TwinTeeth is an inverse delta bot, kinematically similar to a large number of 3D printers out there. Instead of suspending the tool from a trio of arms, the TwinTeeth puts the work surface on the arms and suspends the tool from the top of the machine. There are a few neat bonuses for this setup – all the tools, from a BluRay laser diode, a Dremel, solder paste dispenser, and a plastic extruder for 3D printing can be mounted in easy to mount adapters. The TwinTooth design uses three locking pins to keep each toolhead in place, and after a little bit of software setup this machine can quickly switch between its various functions.

One very interesting feature of this bot is the ability to mask off PCBs for chemical etching with a BluRay laser diode. This actually works pretty well, as evidenced by the teams earlier work with a purpose-built PCB masker machine. The only problem with this technique is that presensitized boards must be used. If that’s an issue, no problem, just use the Dremel attachment with a v-bit cutter.

In Chicago? Bring A Hack!

It’s been far too long since we’ve had a Hackaday presence at a hackerspace. This, of course, is a terrible oversight and something must be done to correct it. If you’re in Chicago, you’re in luck. We’re going to be at Pumping Station: One this Wednesday for a Bring-A-Hack meetup.

If you have a cool build to show off, a bunch of blinky things, wearables, or just some cool tech, the mythical Hackaday Prize guru [Sophi Kravitz] will be at PS:1 Wednesday evening. I’m pretty sure there will be stickers, but sadly no t-shirt cannon just yet.

The event is free, open to everyone, and there’s pizza. RSVPing would be a good idea, and you can do that over on the page for the event.

Hackaday Links: February 22, 2015

We met up with Freescale guy [Witek] at our party in Munich last year, and he wrote in to tell us about the Freescale booth at Embedded World this week in Nuremberg. They’re going to have a bunch of Freedom boards to play around with and an extremely powerful RIoTboard with a 1GHz iMX6 Solo processor, 1GB of RAM, and 4GB of EMMC Flash. It’s not a Raspi or BeagleBone killer, but if you need a small Linux board with a lot of horsepower, there ‘ya go.

SmarterEveryDay is finally getting around to doing a series of videos about space. This guy knows his stuff, and with the access he can get, it should make for interesting viewing.

Here’s something for your Sunday listening: [Vint Cerf] at Carnegie Mellon talking about the Olive Project and the Interplanetary Internet. The Olive project is an archive for executables, and solves the problem of having to preserve hardware along with software. Cool stuff.

10 GHz pulse magnetron destroys electronics. That’s the only information you’re going to get with this one. There’s a fine line between ‘don’t try this at home’ and ‘this project needs replication’.

Most of the northern half of the United States is covered in a billion tons of snow. [Jamie]’s electric snowmobile/Power Wheels is the perfect vehicle for this occasion. It’s 36V with two 500W motors. Figure out how to replace the wheels with small treads, and there’s really something interesting here.

A Smaller, Homebrew Amstrad

Although they weren’t very popular in America, the Amstrad CPC 464 and CPC 6128 were extremely well-received in Europe. [Zaxon] loved his ‘464, and for a bit of a learning experience – and the fact that an Amstrad takes up an exceptional amount of desk space – decided to make a clone of his favorite computer (.pl, Google translatrix).

The clone began as a simple schematic of the original Amstrad CPC 464, but the parts used in the original required some modern equivalents. Still, most of the old chips remained in the clone; the original Hitachi HD46505 CRT controller remains, as do the original DRAM chips and the vintage Z80 CPU.

A few modern amenities were added, including an interface for a PS/2 keyboard and a disk that’s much improved over the original cassette drive or weird 3.5″ disks: a Disk On Module, or basically a CompactFlash card in a strange form factor that plugs straight into a motherboard’s IDE socket. They’re mostly seen when tearing apart old thin clients, but using them in retrocomputing project is a great idea.

Thanks [rasz_pl] for the tip. Video below.

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MacGyver, Jedi Knights, Ammo Stockpiles, and Candy Crush

Everyone’s favorite machinist, tinkerer, YouTube celebrity, deadpan comedian, and Canadian is back with a tale of popping a few benzos, stumbling around Mexico, and wondering why everyone else on the planet is so stupid.

The hero of our story considered the feasibility of one hundred and eighty-sixth trimester abortions as he stood outside a Mexican airport watching a stockbroker complain about the battery in his cellphone. Meanwhile, cars drove by.

Here’s how you charge a phone with a car battery and an ‘ol Dixon Ticonderoga.

To charge a battery, all you really need to do is connect the terminals to a power source with the right voltage. A cell phone battery needs about three volts, and a car battery has twelve. You need a voltage divider. You can get that with a pencil. Take out a knife, get to the carbon and clay wrapped in wood, and wire the battery up. Make a cut a quarter of the way down this rather long resistor, and there you will find something around three volts.

Does it work? Yeah. It works even better if you have some tape to hold wires onto the cell phone battery when charging. Is it smart? It is if there is no other conceivable way of charging your cell phone. Should you do it? Nah. Video below. Thanks [Morris] for the link.

Continue reading “MacGyver, Jedi Knights, Ammo Stockpiles, and Candy Crush”

Toner Transfer And Packing Tape

The toner transfer process of producing PCBs has evolved tremendously over the last few years. It started out by printing PCB layouts onto magazines with a laser printer, then some clever people figured out that glossy inkjet photo paper would work just as well. Now there’s a new substrate for you – packing tape – and it seems to work pretty well.

[David] was designing a cheap board for a robot kit for a workshop and needed 100 tiny PCBs. They were simple boards, and perfectly suited for home PCB manufacturing. He started off by printing directly onto glossy magazine paper, but this wasn’t an ideal solution. During one run, some of the toner landed on the packaging tape he was using to secure the boards. A bit of serendipity came into play and [David] discovered packaging tape is usable in the toner transfer process.

The technique is simple enough: put some packaging tape on a piece of paper, print a board layout (reversed!) on a laser printer, and go through the usual clothes iron/laminator/etching process. [David] is actually using a hair straightener for transferring the toner over to the copper clad board – interesting, and in a pinch you can use the same tool for reflowing SMD components.