Underwater Logging For Science

Logging data with an Arduino is old-hat for most Hackaday readers. However, [Patricia Beddows] and [Edward Mallon] had some pretty daunting requirements. Their sensors were going underground and underwater as part of an effort to study conditions underwater and in caves. They needed to be accessible, yet rugged. They didn’t want to use batteries that would be difficult to take on airplanes, but also wanted more than a year of run time. You can buy all that, of course, if you are willing to pay the price.

Instead, they used off-the-shelf Arduino boards connected together inside PVC housings. Three alkaline AA batteries are compact and give them more than a year of run time. They wrote a journal paper to help other scientists use the same techniques for the Sensors journal published by the Multidisciplinary Digital Publishing Institute.

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Open Source Underwater Glider Wins 2017 Hackaday Prize

The Open Source Underwater Glider has just been named the Grand Prize winner of the 2017 Hackaday Prize. As the top winner of the Hackaday Prize, the Open Source Underwater Glider will receive $50,000 USD completes the awarding of more than $250,000 in cash prizes during the last eight months of the Hackaday Prize.

More than one thousand entries answered the call to Build Something That Matters during the 2017 Hackaday Prize. Hardware creators around the globe competed in five challenges during the entry rounds: Build Your Concept, Internet of Useful Things, Wings-Wheels-an-Walkers, Assistive Technologies, and Anything Goes. Below you will find the top five finisher, and the winner of the Best Product award of $30,000.

Open Source Underwater Glider

Grand Prize Winner ($50,000 USD): The Open Source Underwater Glider is an AUV (Autonomous Underwater Vehicle) capable of long-term underwater exploration of submarine environments. Where most AUVs are limited in both power and range, the Open Source Underwater Glider does not use active propulsion such as thrusters or propellers. This submersible glides, extending the range and capabilities of whatever task it is performing.

The Open Source Underwater Glider is built from off-the-shelf hardware, allowing anyone to build their own copy of this very capable underwater drone. Extended missions of up to a week are possible, after which the Glider would return home autonomously.

Connected Health: Open source IoT patient monitor

Second Place ($20,000): The Connected Health project aims to bring vital sign monitoring to the masses with a simple, inexpensive unit built around commodity hardware. This monitoring system is connected to the Internet, which enables remote patient monitoring.

Assistance System for Vein Detection

Third Place ($15,000): This Assistance System for Vein Detection uses off-the-shelf components and near-IR imaging to detect veins under the skin. This system uses a Raspberry Pi and camera module or a modified webcam and yet is just as reliable as professional solutions that cost dozens of times more than this team’s prototype.

Adaptive Guitar

Fourth Place ($10,000): The Adaptive Guitar is an electromechanical system designed to allow disabled musicians to play the guitar with one hand (and a foot). This system strums the strings of a guitar while the musician frets each string.

Tipo : Braille Smartphone Keypad

Fifth Place ($5,000): Tipo is effectively a Braille USB keyboard designed for smartphones. The advent of touchscreen-only phones has unfortunately left the visually impaired without a modern phone. Tipo allows for physical interaction with modern smartphones.

Best Product Winner: Tipo : Braille Smartphone Keypad

The winner of the Best Product is Tipo : Braille Smartphone Keypad. Tipo is the solution to the problem of the increasingly buttonless nature of modern smartphones. A phone that is only a touchscreen cannot be used by the visually impaired, and Tipo adds a Braille keypad to the back of any phone. It is effectively a USB keypad, designed for Braille input, that attaches to the back of any phone.

The Best Product competition ran concurrently with the five challenge rounds and asked entrants to go beyond prototype to envision the user’s needs, manufacturing, and all that goes into getting to market. By winning the Best Product competition, the creators of Tipo will refine their design, improve their mechanical build, start looking at injecton molding, and turn their 3D printed prototype into a real product that has the ability to change lives.

Congratulations to all who entered the Hackaday Prize. Taking time to apply your skill and experience to making the world better is a noble pursuit. It doesn’t end with the awarding of a prize. We have the ability to change lives by supporting one another, improving on great ideas, and sharing the calling to Build Something that Matters.

The Almost Working, DIY Underwater Scooter Pistol Thing

A dive scooter, or a submersible ducted fan used by divers, is not a new invention. They’ve been around for years, used by everyone from the villain of the week on Miami Vice to professional divers. Now that high-capacity Lipos, 3D printers, and powerful brushless motors are cheap, it was only a matter of time before someone built a DIY dive scooter. [Peter Sripol] is the man, and he also built a dive scooter, underwater pistol thing.

[Peter]’s dive scooter is almost entirely 3D printed. That includes the ducted fans/thrusters. The electronics are what you would expect from a grab bag from Hobby King and include two 2530 sized 400Kv motors from Avroto. These are massive motors made for massive quadcopters but they do seem to work just as well pulling a human underwater.

While this dive scooter was a marginal success, there were a few problems [Peter] had to work through. These were the lowest pitch propellers [Peter] has ever printed. To be fair, most of the props [Peter] has printed were used in air, not a fluid that’s hundreds of times denser. The electronics held up very well, considering the bath in salt water.

You can check out [Peter]’s video build and demo below.

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Hackaday Prize Entry: Underwater Glider Offers Low-Power Exploration

[Alex Williams] created his Open Source Underwater Glider project as an entry to The Hackaday Prize, and now it’s one of our twenty finalists. This sweet drone uses motor-actuated syringes to serve as a ballast tank, which helps the glider move forward without the use of traditional propellers.

Unlike most UAVs, which use motors to actively move the craft around, [Alex]’s glider uses the syringes to change the buoyancy of the craft, and it simply glides around on its wings. When the craft starts getting too deep, the syringes push out the water and the glider rises toward the surface until it’s ready for another glide.

This low-power solution allows for long-term science projects and research. In addition to conserving power, the glider’s slow travel does not disturb the water or sea life.

[Alex]’s goal is to make his glider open source and 3D printable, combined with off-the-shelf hardware and ArduSub under the hood.

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Gliding To Underwater Filming Success

If you are a fan of nature documentaries you will no doubt have been wowed by their spectacular underwater sequences. So when you buy a GoPro or similar camera and put it in a waterproof case accessory, of course you take it with you when you go swimming. Amazing footage and international documentary stardom awaits!

Of course, your results are disappointing. The professionals have years of experience and acquired skill plus the best equipment money can buy, and you just have your hand, and a GoPro. The picture is all over the place, and if there is a subject it’s extremely difficult to follow.

[Steve Schmitt] has an answer to this problem, and it’s a refreshingly simple one. He’s built an underwater glider to which he attaches his camera and launches across the submerged vista he wishes to film. Attached to a long piece of line for retrieval, it is set to glide gently downwards at a rate set by the position of the camera on its boom.

Construction is extremely simple. The wing is a delta-shaped piece of corrugated plastic roofing sheet, while the fuselage is a piece of plastic pipe. A T-connector has the camera mount on it, and this can slide along the fuselage for pre-launch adjustments. It’s that simple, but of course sometimes the best builds are the simple ones. He’s put up a video which you can see below the break, showing remarkable footage of a test flight through a cold-water spring.

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Arm Thrusters, For Underwater Super Powers!

Most of us will have spent the idle hours of our youth while sitting in a room where a teacher was standing at the blackboard explaining iambic pentameter or the Diet of Wurms, daydreaming about the amazing exploits we could have created if only we had an Evil Lair stuffed with all the tools our fertile imaginations demanded. [James Bond] would have had nothing on us, our personal [Q] branch would have ensured we would have had the coolest gadgets on the planet.

As grown-ups we have some of the resources to make this a reality, yet somehow we’ve never made good on the dream. We spend our time creating IoT clocks or novelty electronic Christmas ornaments, and Mr. [Bond] still has a monopoly on the really cool stuff. Fortunately [PeterSripol] has struck a blow on our behalf, because he’s created a pair of arm-mounted underwater thrusters (YouTube, embedded below) that should leave [007] feeling definitely a bit [006.5].

The thrusters themselves came from a Kickstarter purchase that he left on the shelf for a while without an application. Then with only a short time before a trip to Hawaii, he set to work to do something with them, and the arm thrusters were the result.

He makes extensive use of components from the world of radio controlled models, with battery packs and speed controllers mounted in a waterproof food container at his belt, and a pair of handheld microswitch controllers. There is an Arduino which presumably produces the PWM signal, and we are treated to an in-depth look at his waterproofing efforts for the various connectors and switches. After a false start with battery polarity and a cracked impeller housing the device works, and we see it in use on a suitably tropical though not quite sun-kissed beach.

The thrusters appear to work very well, and we’d say they look a lot of fun to use. Sadly the exercise is brought to a halt when a control wire is sucked into a propeller, but we’re sure that’s only a minor setback. We’ve posted the video below the break, take a look.

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Hackaday Prize Entry: Profiling Underwater Light

The goal for the Citizen Science portion of the Hackaday Prize is to empower people to create their own devices to perform their own analyses For [Adam]’s project, he’s designing a device that measures the health of waterways simply by looking at the light availability through the water column. It’s called PULSE, the Profiling Underwater Light SEnsor, and is able to monitor changes that are caused by algal blooms, suspended sediments, or sewer runoff.

The design of PULSE is a small electronic depth charge that can be lowered into a water column from anything between a research vessel to a kayak. On the top of this sinkable tube is a sensor to measure photosynthetically active radiation (PAR). This sensor provides data on light irradiance through the water column and gives a great insight into the health of photosynthesis, marine plant life, and ultimately the health of any aquatic environment.

Measuring the light available for photosynthesis through a water column is great, but PULSE isn’t a one trick pony. On the bottom of the aquatic probe are three sensors designed to measure photosynthesis, dissolved organic matter, and turbidity. These sensors are really just a few LEDs and photodiodes, proving just how much science you can do with simple tools.

The goal of the Citizen Science portion of the Hackaday Prize is to put scientific discovery in the hands of everyone. PULSE is a great example of this: it’s a relatively simple device that can be thrown over the side of a boat, lowered to the bottom or a lake, and hoisted back up again. It’s inexpensive to build, but still provides great data. That’s remarkable, and an excellent example of what we’re looking for in the Hackaday Prize.