FR4 Machine Shield Is A CNC Milling Machine From FR4 PCB

June 4, 2016 by Moritz Walter 21 Comments

The people behind the PocketNC heard you like CNC PCB mills, so they milled you a PCB mill out of PCB. They announced their surprising new open source hardware product, a pocket sized 3-axis CNC machine entirely made out of FR4 PCB material, aptly named “FR4 Machine Shield”, at this year’s Bay Area Maker Faire.

UPDATE: The FR4 Machine Shield is now on Kickstarter

We know the concept from quadcopters, little robots, and generally things that are small enough to make use of their PCBs as a structural component. But an entire CNC machine, soldered together from a few dozen PCBs certainly takes it to the next level.

There is no doubt that 2mm thick fiber reinforced epoxy can be surprisingly rigid, although the Achilles heel of this method might be the solder joints. However, it looks like all load bearing, mechanical connections of the machine are supported by tightly interlocking ~~“dovetail”~~ finger-joints, which may help protecting all the solder connections from the strain hardening effects of continuous stress and spindle vibrations.

As you might expect, most of the wiring is embedded into the FR4 frame construction, and to squeeze the maximum value out of the PCB material, the motor driver boards interface via card edge connectors with the (currently Arduino based) controller board. In addition to the milling head, which features a brushless DC motor and a tool coupler, the team wants to develop heads for circuit printing, microscopy, pneumatic pick and place, hot air reflow, and 3D printing.

With all those cost-driven design choices, from the one-step manufacturing process of the frame and wiring to the dismissal of screws and nuts from the frame assembly, the “FR4 Machine Shield” could indeed become one of the cheapest CNC machine kits on the market. The team targets an introduction price of $400 during a Kickstarter campaign in June 2016. Can they deliver? [Gerrit] checked Pocket NC out at the Faire and ended up raving about how they run their business.

Enjoy their teaser video below!

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The Sincerest Form Of Flattery: Cloning Open-Source Hardware

April 19, 2016 by Elliot Williams 79 Comments

We’re great proponents (and beneficiaries) of open-source hardware here at Hackaday. It’s impossible to overstate the impact that the free sharing of ideas has had on the hacker hardware scene. Plus, if you folks didn’t write up the cool projects that you’re making, we wouldn’t have nearly as much to write about.

We also love doing it ourselves. Whether this means actually etching the PCB or just designing it ourselves and sending it off to the fab, we’re not the types to pick up our electronics at the Buy More (except when we’re planning to tear them apart). And when we don’t DIY, we like our electrons artisanal because we like to support the little guy or girl out there doing cool design work.

So it’s with a moderately heavy heart that we’ll admit that when it comes to pre-built microcontroller and sensor boards, I buy a lot of cheap clones. Some of this is price sensitivity, to be sure. If I’m making many different one-off goofy projects, it just doesn’t make sense to pay the original-manufacturer premium over and over again for each one. A $2 microcontroller board just begs to be permanently incorporated into give-away projects in a way that a $20 board doesn’t. But I’m also positively impressed by some of the innovation coming out of some of the clone firms, to the point that I’m not sure that the “clone” moniker is fair any more.

This article is an attempt to come to grips with innovation, open source hardware, and the clones. I’m going to look at these issues from three different perspectives: the firm producing the hardware, the hacker hobbyist purchasing the hardware, and the innovative hobbyist who just wants to get a cool project out to as many people as possible. They say that imitation is the sincerest form of flattery, but can cloning go too far? To some extent, it depends on where you’re sitting.

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Kestrel Computer Project

March 25, 2016 by Brandon Dunson 29 Comments

Many successful large-scale projects don’t start out large: they start with a small working core and grow out from there. Building a completely open-source personal computer is not a weekend project. This is as much a retelling of events as it is background information leading up to a request for help. You’ll discover that quite a lot of hard work has already been put forth towards the creation of a completely open personal computer.

When I noticed the Kestrel Computer Project had been submitted via the Hackaday tips line I quickly tracked down and contacted [Samuel] and asked a swarm of questions with the excitement of a giddy schoolgirl. Throughout our email conversation I discovered that [Samuel] had largely kept the project under the radar because he enjoyed working on it in his down time as a hobby. Now that the project is approaching the need for hardware design, I posed a question to [Samuel]: “Do you want me to write a short article summarizing years of your work on Kestrel Project?” But before he could reply to that question I followed it up with another: “Better yet [Samuel], how about we tell a more thorough history of the Kestrel Project and ask the Hackaday community for some help bringing the project home!?”
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Cute, Hackable, 3D Printable Robot Family

February 20, 2016 by Elliot Williams 9 Comments

We first saw the robot Zowi (top row in the banner photo) at Make Munich a few weeks ago, and we were very impressed by how much interesting motion they were getting out of the ‘bot for only using four servo motors. The combination of big feet, strong ankle joints, and clever programming let the cute little bot stand on one leg, do a moonwalk, and even hop. (See the video, below the break.) We knew it was for sale. What we didn’t know is that it was entirely open source.

[Javier Isabel], the inventor, is very good at giving credit where it’s due, and that’s a great thing because his ‘bot is basically an improved BOB robot. That said, you really need to see this thing moving to know what a difference Zowi’s significantly stronger servos and clever programming can make.

But that’s not all! Since everything about Zowi is open, and up on GitHub you can not only 3D print one of your own, but you can easily modify the attractively-boxy case. And a handful of people have taken [Javier] up on the offer, and submitted their modifications back as pull requests. So if you’d rather something mildly more humanoid, and are willing to add a couple more servos, there’s a good basis for your explorations ready to go.

We really like the idea of collaborative toy-robot design, and from what we’ve seen the basic Zowi platform is a winner. Check it out and see if you’re not inspired to add your own personal touch to the design. If you do, be sure to contribute back for others to see!

Thanks [Nils Hitze] for the tip!

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Hackaday Prize Entry: A Civilization Starter Kit

August 11, 2015 by Brian Benchoff 43 Comments

Over the last few years, [Marcin] has been working on the building blocks of civilization. He’s busy creating the Global Village Construction Set, the fifty most useful machines ever created. Everything from bread ovens to combine harvesters is part of this Global Village Construction Set, and everything is open source, free for all to use and improve upon.

For this year’s Hackaday Prize, [Marcin] is working on an Open Source Bulldozer. The ability to create earthworks and move dirt around is actually one of humanity’s greatest achievements, and enables the creation of everything from foundations for homes to trans-oceanic canals.

This Open Source bulldozer is astonishingly modular, scaleable from a one-ton microtractor to a 13,000lb dozer, with attachment points for blades, drawbars, and everything else you can attach to a Bobcat earthmover. It’s 168 horses of opensource earthmoving capability, and a perfect addition to this year’s Hackaday Prize.

[Marcin] and his group Open Source Ecology posted a video of this micro bulldozer rolling around on their shop floor recently; you can check that out below. You can also see our coverage of the GLVCS from several years ago.

The 2015 Hackaday Prize is sponsored by:

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Parallax Propeller 1 Goes Open Source

August 7, 2014 by Adam Fabio 60 Comments

OpenPropellerProject OpenSourceProp1Banner

Parallax has embraced open source hardware by releasing the source code to its Propeller 1 processor (P8X32A). Designed by [Chip Gracey] and released in 2006, the 32-bit octal core Propeller has built up a loyal fan base. Many of those fans have created development tools for the Propeller, from libraries to language ports. [Ken, Chip], and the entire Parallax team have decided to pay it forward by releasing the entire source to the Propeller.

The source code is in Verilog and released under GNU General Public License v3.0. Parallax has done much more than drop 8-year-old files out in the wild. All the configuration files necessary to implement the design on an Altera Cyclone IV using either of two different target boards have also been included. The DE0-Nano is the low-cost option. The Altera DE2-115 dev board is more expensive, but it also can run the upcoming Propeller 2 design.

The release also includes sources for the mask ROM used for booting, running cogs, and the SPIN interpreter. [Chip] originally released this code in 2008. The files contain references to PNut, the Propeller’s original code name.

We’re excited to see Parallax taking this step, and can’t wait to see what sort of modifications the community comes up with. Not an Altera fan? No problem – just grab the source code, your favorite FPGA tools, and go for it! Starved for memory? Just add some more. 8 cogs not enough? Bump it up to 16. The only limits are the your imagination and the resources of your target device.

Interested in hacking on a real Propeller? If you’re in Las Vegas, you’re in luck. A Propeller is included on each of the nearly 14,000 badges going to DEFCON 22 attendees. While you’re there, keep an eye out for Mike and The Hackaday Hat!

Oculus Releases Open Source Hardware

February 6, 2014 by Brian Benchoff 18 Comments

Latency

Oculus VR, makers of the very cool Oculus Rift VR display, are making their first steps towards open hardware. Their first project is a latency tester, meant to precisely measure the latency of a VR setup or application. This is true open hardware with everything – the firmware, schematics, and mechanical parts all available on GitHub

Inside this neat bit of hardware is a STM32F102 microcontroller and a TCS3414 color sensor. The firmware is designed to measure changes in color and send that data back to a computer with a timestamp.

Not only are the schematics and board files available, there are also a few links to buy the PCBs at OSH Park: for about $24, you can get three copies of the main PCB and sensor board delivered to your door. If you have a 3D printer, Oculus has provided the .STL files to print out the enclosure for this device.

While this is a fairly niche product, we’re amazed at how well the Oculus folk have put together this open source hardware project. Everything you need to replicate this product, from board files, mechanical design, firmware, and instructions on how to build everything is just right there, sitting it a GitHub. Wonderful work.