Day: April 21, 2015

Slow Stick Auto Gyro

RC Plane Converted To Autogyro

April 21, 2015 by 19 Comments

Out in the RC Airplane world, there is a great airframe called the Slow Stick. There is not much going on with this plane as it only has the bare necessities, a motor, wing, tail and a fiberglass tube (hence the ‘stick’ part of Slow Stick) as the fuselage. Yes, and as the name suggests it is slow. Although it’s intent is to be a starter plane for beginners, even experienced pilots like it because it is cheap, easy to repair and fun to modify. [StephanB] is the type of guy who likes to modify things so he set out to convert his Slow Stick to an Autogyro.

An Autogyro can be described as a cross between a plane and a helicopter. Like a plane it has a propeller that provides forward thrust. Unlike a plane, it does not have a wing. To provide lift, there is a large helicopter-like rotor on top of the craft but this rotor is not powered. It only spins when the craft is moving forward. Lift is created when the rotor is spinning, allowing the Autogyro to take off.

[StephanB] started by removing his Slow Stick’s wing. This takes all of 2 seconds and consists of only removing 2 rubber bands. Next he built a frame for the rotor. It was made to fit the wing mounts of the Slow Stick so that it could be quickly converted back to a plane. With a spinning Autogyro rotor, the side that the rotor is traveling in the forward direction creates more lift than the side of the rotor traveling rearward. To compensate for this unequal lift, [StephanB] added a sideways tilting rotor mount. An RC servo is connected to the mount and allows remote control of the rotor to balance out the lift.

Slow Stick Auto Gyro

Reading Analog Values With A MagSafe Port

April 21, 2015 by 39 Comments

The MagSafe adapter in MacBooks and MacBook Pros is probably the greatest single advancement in laptop technology in the last 10 years. Interestingly, the MagSafe port is also a an analog volt meter that can be read by the OS, and it’s not just limited to monitoring battery voltage; with the right software, you can turn a MagSafe port into a terrible and expensive analog sensor, letting scripts on the computer run based on analog values.

[Peter] created a voltmeter application for his mac after realizing the System Management Controller – the chip responsible for charging the battery – was accessible through low-level kernel calls. If you care enough to chop an Apple power adapter in half, the MagSafe port can read other analog inputs.

The SMC Voltmeter app [Peter] wrote samples the voltage every second and displays values on a graph. This app also allows you to run scripts. While you won’t be able to do much with an extremely expensive, very slow, one-channel data logger (the battery is going to run down eventually), we’re sure we’ll see something that’s held together with duct tape and prayer that uses this weird tool.

These Builds Grow Food In Cities

April 21, 2015 by 47 Comments

You’ve probably heard the term food desert: locations where it’s difficult to get access to fresh fruits and vegetables. One way to help alleviate the problem is to promote urban farming. This week we challenged you to think of ideas that would make growing fresh food in urban areas easier and more enticing. Let’s take a look:

The IKEA Model:

IMG_0429One concept that was popular with this week’s theme was ready-to assemble gardening kits. From personal experience I think this is of huge importance. Once upon a time in a crappy apartment far, far away my wife and I set out to grow tomatoes on the balcony. The plants flourished and bore fruit which the squirrel population of the neighborhood immediately stole while still green. I built this produce cage the following year and we were able to enjoy the fruit of our labors. But not everyone can whip up such a solution without help.

Aker is a set of designs for a modular farming system. The idea is to find a hackerspace or other group with a CNC router and use the plans to cut out different farming “furniture” like a chicken coop, tiered gardening container rack, a wall garden, compost system, and a bee hive. The coop design would serve as caged garden if need be.

Along the same vein is [Eric’s] Urban Gardening IKEA Style. He’s excited to pass along the knowledge he has accumulated over the years. Part of this is a simple to build gardening table that holds rectangular potting containers.

Modular Greenhouse:

modular-hyrdoponics

Next up is the concept of modular farming. We like this because the gardens can be scaled based on available space.

Seen here is the Modular Vertical Farming mockup. The system specs different size and features for each pod based on what is being grown inside. Also included in the concept is a monitoring and feedback system which will help each urban farmer achieve success.

Combining modularity with water conservation is the Hydropod project. It’s not purely hydroponics, but the vertical cylinders are designed to pump water up to the top and reclaim it as it exits the bottom.

We don’t want to move on without a brief mention of the HydroPI Garduino. Kudos on maximum-buzz-wordiness in the title. We’re into the concept of including common tools to help monitor and control this hydroponic garden. But for city-dwellers who frequently move, the portable emphasis is valuable.

Uber-Conservation:

capture-condensate-from-acThis one is quite an interesting thought. If you live in a climate where air conditioning is used constantly, chances are pretty good that the humidity the condenser coil removes from the air is going right down the drain. The Condesnate Capture for Micro-Irrigation project wants to change that by sequestering the water for the next urban garden irrigation cycle. We’d love to see some solid data on average condensate output per square foot of building.

This Week’s Winners

time-for-the-prize-week-4-prizes

First place this week goes to Aker and will receive an RGB Shades Kit.

Second place this week goes to Modular Vertical Farming and will receive a GoodFET42 JTAG programmer and debugger.

Third place this week goes to Condensate Capture for Micro-Irrigation and will receive a Hackaday CRT Android tee.

Next Week’s Theme

We’re moving to a new set of weekly giveaways that are more numerous and valuable. This week we’ll be giving away thirty (30) prizes. Each will be a $50 code to spin some PCBs. More details on that in our next Time for the Prize post. For now make sure you submit an official entry. Start your project on Hackaday.io and use the “Submit-To” button below the picture on the left to submit it for the 2015 Hackaday Prize.

The 2015 Hackaday Prize is sponsored by:

ASCII Art With Pure Data And A Typewriter

April 21, 2015 by 19 Comments

[vtol] is quickly becoming our favorite technological artist. Just a few weeks ago he graced us with a Game Boy Camera gun, complete with the classic Game Boy printer. Now, he’s somehow managed to create even lower resolution images with a modified typewriter that produces ASCII art images.

As with everything dealing with typewriters, machine selection is key. [vtol] is using a Brother SX-4000 typewriter for this build, a neat little daisy wheel machine that’s somehow still being made today. The typewriter is controlled by an Arduino Mega that captures an image from a camera, converts it to ASCII art with Pure Data and MAX/MSP, then slowly (and loudly) prints it on a piece of paper one character at a time.

The ASCII art typewriter was recently shown at the 101 Festival where a number of people stood in front of a camera and slowly watched a portrait assemble itself out of individual characters. Check out the video of the exhibit below.

Continue reading “ASCII Art With Pure Data And A Typewriter” →

Wind turbine

3D Printed Wind Turbine Uses Bamboo

April 21, 2015 by 16 Comments

Using wood and aluminum for wind turbines is one thing, but how about 3D printing the blades and using bamboo to hold them together?

[Jeff Heidbrier] of Hero Electronics decided to try something new. He designed his own wind turbine to use cheap and readily available bamboo, with 3D printed parts. It’s a vertical axis wind turbine, unlike the typical wind mills you see generating power. The blades were printed on a Thing-O-Matic (nice to see they still exist in the wild!), and the turbine blades are about a foot long.

To make sure everything was level, he used a laser level to ensure his bearing system worked well. All in all, it looks pretty sturdy, but who knows how it will hold up to mother nature. Unfortunately there’s no clip of it actually being used outside, but I guess that just means we’ll have to wait for part 2.

Continue reading “3D Printed Wind Turbine Uses Bamboo” →

Hack With Us In The City That Never Sleeps

April 21, 2015 by 18 Comments

We’re hosting one day of hacking in New York City next week. Stretch your skills with the power of deadlines and you can be immortalized in Hackaday history. If that kind of cred doesn’t do it for you, Hackaday is bringing along $1500 in prizes and there’s another $5000 cash prize at stake as well.

Only Hackaday can bring hardware to the TechCrunch NYC Hackathon on May 2nd. We need you to make it happen. Get your free ticket now (UPDATE: Our special tickets are all sold out but you might still be able to get some in the last few ticket releases. Check back often.). From there join the comment thread on our events page to connect with the rest of us who will be there.

Break the Hardware and Software Divide

techcrunch-disrupt-hackathon-2014Check out these pictures of last year’s TechCrunch hackathon. There’s a ton of people, they all seem to be having fun, but when it comes down to the end, they’re pointing to the screens of their Macbooks. This year you need to break that mold and and rise to the top with a hardware product to hold up as you are awarded TechCrunch’s comically large $5000 check.

Holding a hunk of hardware with electrons running through its veins is way more hardcore than software alone. We will end the segregation of software-only and hardware-only hackathons. After all, most hardware hacks these days are also software hacks. Team up with one of the iOS/Android app groups and add hardware to the mix. We want to see at least twenty of those tables strewn with jumper wires, breakout boards, and soldering irons. And we want to see someone from the Hackaday Community win this thing. So here’s the agreement — we’ll get you in, we’ll bring the hardware, you bring the awesome.

All Work and No Play (yeah right)

Ha! Like that has ever been our mantra. This is going to be a blast and because of it the Hackaday crew is flocking to town from all over the country. Confirmed so far are [Adam], [Alek], [Amar], [Brian], [Chris], [Jasmine], [Matt], [Mike], [Rob], [Sophi], and [Theodora]. We’re there to have fun, and you’re invited.

Most of the crew will arrive in town on Thursday night and we’ll definitely be meeting up. Anyone who registers for the Hackathon is invited for these pre-game festivities. Drop a comment on the events page and we’ll PM you details about where and when. But at the event our collective skills will be available to get your project past the sticking points. Of course we also need many hands to distribute all the swag we’re bringing along.

Kickstarting Router-Based Development Boards

April 21, 2015 by 57 Comments

[Squonk] is rather famous in the world of repurposed routers, having reverse engineered the TL-WR703N wireless router from TP-Link a few years ago. With that knowledge, he’s developed an open platform for Things on the Internet called Domino. It’s pretty much exactly what you would get by cracking open a router bought on AliBaba, only in a much more convenient package with many more pins broken out.

The Domino builds on [Squonk]’s reverse engineering efforts of the TP-Link TL-WR703N wireless router, the router that has stolen the thunder from the Linksys WRT54G for all those sweet, sweet, embedded hacks. Both the 703N and the Domino are built around the Atheros AR9331. While the router version of this chipset only breaks out a few GPIOs and other interesting pins, the Domino breaks out just about everything – GPIO, JTAG, I2S, UART, SPI, USB, and Ethernet can be found on the device.

The basic Domino can hopefully be had with a $25 pledge to the Kickstarter campaign. That’s a little less than the normal price for a WR-703N, and if you’re putting a router in a hat it might be worth your while. There are a few advanced versions that include an ATMega32u4 microcontroller, making it compatible with the Arduino Yun as well.