HaDuino: Open Your Beer Using Arduino

Frankly we’re tired of Arduino having a bad name here at Hackaday. So [Brian Benchoff] came up with a way to make it useful to a wider audience. His creation, which we call the HaDuino, lets you use the Arduino clone to open a tasty bottle of beer.

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Fail of the Week: Smoking pulse sensor and BLE disappointment

fotw-ble-and-pulse-sensor

We think [Thomas Brittain] is onto something. We often post to our personal blogs so that we have a reference to how we did something. But he also keeps a long post that documents his abandoned projects. It ends up serving as a quick start if he ever decides to pick up the torch once again. Lucky for us he’s included his failures in the write up. This Fail of the Week features the top two posts on his Incomplete Works page. The first is an attempt to make his own pulse sensor. The second is a miserable experience with a cheap Bluetooth Low Energy module.

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OSH Park adds board sharing feature

osh-park-board-sharing

OSH Park continues to get better and better. We think the recent addition of Project Sharing is a huge feature! Obviously this lets you order up the open source goodness posted by others with a minimum amount of effort. But to us there are a couple of other things that make this valuable.

First off, the ability to browse through the projects can be a huge inspiration for your own work. Secondly, the board files themselves are available for download, and it looks like you can post links to your repository if you so choose when sharing your project. This makes OSH Park something of a Thingiverse for PCBs. Browse through what’s offered then download the files to etch yourself or just to use as reference to see how others do things when laying out the traces. And of course the rock bottom prices offered make this a no-brainer for shared breakout board designs.

The Twitter post calls this the “early stages” of the feature. We can’t wait to see what they come up with as it matures.

Telegraph sounder clicks out email messages

telegraph-box-together

[Patrick Schless] is excited to show off the project he took on about nine months ago. After finding an antique telegraph sounder he wired it up to an Arduino to see if he could make it tick. The successful experiment laid the ground work for different hardware that would make it into a morse code email reader.

He doesn’t know much about the background of the old hardware, but driving it is relatively simple. It’s basically a magnetic relay so you need to have a transistor for switching and a flyback diode for protection. Once those components are in place it’s just a matter of toggling a bit. [Patrick] knew he wanted to pull messages from an online source, so he set his Arduino aside and grabbed a Raspberry Pi. It worked like a charm. His plan was to put this on a bookshelf in perpetuity so he went the extra mile, designing his own PCB and having it spun using the OSH Park service. The project is finished with this low-profile laser-cut base which houses all of the electronics.

Now if he wants to respond to his emails in Morse code he needs to build this keyboard.

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Hackaday Links: Sunday, April 28th, 2013

hackaday-links-chain

Another week has gone by and we hope you’ve been happily hacking away in your underground lairs. If not, here’s some inspiration that didn’t quite make it to the front page this week:

[Razr] used a CFL ballast to replace the mechanical one in his fluorescent tube light fixture.

To make the drawers of his workbench more awesome [Rhys] used the faceplates from some servers.

This week saw some changes in the hobby PCB market. Looks like BatchPCB is being sold to OSH Park starting May 1st. [Thanks Brad]

[Rich Olson] shouldn’t have any trouble getting out of bed now that his alarm clock literally shreds cash if he doesn’t shut it off.

We faced the same problem as [Kremmel] when we first got a Raspberry Pi, no USB keyboard. We bought one but he simply hacked his laptop to work. [Thanks Roth]

You may remember that post about a self-propelled snowboard. Here’s a similar project that uses a screw-drive system.

And finally, if you need help reading a quadrature encoder from a microcontroller this lengthy technical post is the place to look.

Designing a quadcopter brain PCB

When working on his quadcopter project [Matt] decided it would be best to build a robust controller for the device. He had never sent off a PCB design for fabrication, but took the plunge and ended up with a compact and reliable PCB on the first try.

One of the first things that comes to mind when we hear about quadcopter controllers are the feedback sensors. The accelerometers which are used for these projects generally come in a DFN or QFN package. This means there are no legs. Instead the chip has pads on the bottom of the package making it a lot more difficult to solder. [Matt] side-stepped this issue by using an IMU board which already has the sensors in place and offered a 0.1″ SIL pin header to use as an interface. This is simple to roll into the design, along with all of the other connectors for motor control, power, etc. He grabbed a copy of Eagle Lite to do the layout, and used OSH Park to get the boards fabricated. He was surprised that everything worked on the first try. Thanks to his planning it fits inside of a plastic food container where it should be able to ride out most minor crashes with ease.

An interview with Laen (the force behind Dorkbot PDX)

[PT] recently interviewed [Laen], the man who makes it cheap and easy for hobbiests to have small PCBs manufactured. He created Dorkbot PDX’s PCB group order, a rapid turn PCB service which we see used in projects all the time (pretty much any purple PCB has gone through [Laen]).

Turns out his real name is [James Neal]. He’s a sysadmin by trade but deals in recreational circuitry at night. We were surprised to learn that the service has been rebranded. Its new name is OSH Park and it’s got a purple website with a new submission system. In the interview he discusses the genesis of the service. Inspired by a group parts order (that’s a mouthful!) with other hackers in Portland he saw a need for boards on which to mount them. The service has grown so much that he was spending 2-4 hours per night panelizing the designs. He made the wise choice to include an automated submission service in the new website that takes care of most of this work for him.

The rest of the interview spans a large range of topics. [Laen] shares his feelings on getting the boards manufactured domestically. He speaks briefly on the future of the service, and riffs on why open source hardware has value to him.

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