Relativty is a low-cost VR headset you can build yourself
Arduino Team — February 20th, 2019
While you’ve been hearing about virtual reality for the last 20 years or so, today the hardware required to build such a rig is finally to the point where it’s within the reach of consumers. As seen here, Relativty is a SteamVR-compatible headset that can be made for around $100.
Relativty uses a 3D-printed frame to house its 2560 x 1440 LCD screen, along with a pair of 80mm Fresnel lenses to properly focus the image. Control is accomplished via an Arduino Due and an MPU-6050 accelerometer, which feeds head-tracking info to an external gaming system.
At this point, the device is clean though fairly basic, and will hopefully be the start of a truly excellent open source project as features are added.
Arduino Day Community Challenge: Submit your projects, win hardware and coupons!
Arduino Team — February 20th, 2019
We at Arduino believe that the combination of our technology and your passion make it possible to have an impact on everyone’s everyday life. Ingenuity, innovation, and social good are the cornerstones of our community, and we want to celebrate those traits with a contest whose winners will be announced on Arduino Day.
The Arduino Day Community Challenge aims to award the best community projects that can have a lasting effect on some or all of us. Seven winning entries will be selected, one in each of the following categories:
Social innovation
Kids and education
Home automation
Environment and space
Robotics
Audio and visual arts
Small scale manufacturing and startups
Prizes include boards, hardware, and other goodies valued up to €1,000. If you want to apply, please fill out this form by March 3rd. Aside from a description, you will need to upload a photo or video of your work. The winners will be revealed on Arduino Day during the live stream from our official celebration in Milan.
And remember: we are seeking inspirational, problem-solving projects that represent the core values of Arduino Dayandcan improve the lives of others! Let’s make a difference, together.
Make your own MIDI keyboard matrix (or just buy one?)
Arduino Team — February 19th, 2019
If you’ve ever seen a MIDI pad with dozens of light-up buttons producing electronic music, you may have considered building one using an Arduino. As shown in GreatScott!’s latest write-up, you can indeed create your own Novation Launchpad-like device using a Nano for control, but the real question is should you?
In the video below, GreatScott! shares how made a 6×6 pad, using a 3D-printed body and buttons arranged in a matrix to save I/O, along with WS2812B LEDs. He also goes over the MIDI protocol, which he was able to implement using loopMIDI and Hairless MIDI to serial bridge for Arduino interface.
While the DIY option may or may not be right for you, the concepts presented could be applied to a wide range of electronic musical interface projects.
In this episode of DIY or Buy I will be showing you how I created my own Launchpad. That means I will show you how I combined a design idea with 3D prints, WS2812 LEDs, tactile switches and an Arduino to create a proper MIDI instrument. While building I will also tell you a bit about a keyboard matrix and in the end determine what advantages the DIY Launchpad offers.
Play Mario Kart: Double Dash with a hacked VTech steering wheel
Arduino Team — February 19th, 2019
YouTuber “Insert Controller Here” has been creating gaming controllers out of a variety of objects, like bananas, mayonnaise, and meat. For his latest iteration, the YouTuber decided to convert a VTech Turn and Learn Driver into—what else?—a Mario Kart: Double Dash steering console.
As seen in the video below, the build consists of disassembling the toy, then soldering wires to the correct points to recreate steering wheel input, braking, and throttle. An Arduino Leonardo is used for the gaming interface, allowing Mario and Luigi to make it around the track by turning the wheel and applying brakes, while the accelerator is simply “shifted” into place.
As seen in our earlier post, James Bruton has been working on a breakfast-making robot, and has now moved from boiling eggs to making toast… or apparently hot dogs/sausages as shown in the video’s demo.
What he’s come up with uses a one degree-of-freedom gantry assembly to move servo-powered forks into position. These can then manipulate a cooking tray as needed to heat food up, flipping it out into a hand-held container when done. Two other servos take care of turning the device on and opening the door.
The control setup looks extremely similar to the previous build, with control via buttons, an Arduino Mega, and a small LCD display. Bruton notes that the Mega is used here because of its multiple serial ports, which will be useful to link everything together in the future.
Mechanical tulip is a glowing work of Valentine’s Day art
Arduino Team — February 14th, 2019
Tulips come in all shapes and sizes, but Jirí Praus has created a mechanical version like nothing you’ve ever seen. It’s masterfully crafted as a gift for his wife, using bent wire to form its six petals and stem.
In order to make this present truly amazing, however, a servo-driven linkage system opens up the tulip when touched, exposing seven programmable LEDs in the center, along with 30 bright white SMD LEDs on the petals themselves.
Control for the freeform flower is accomplished via an Arduino Nano, hidden inside its wooden base. It’s a truly spectacular build, shown below illuminating the surrounding area with a brilliant light and shadow pattern.
As recently announced, Arduino Day 2019 will be celebrated on March 16th. If you plan on organizing your your own event, don’t forget to submit your proposal by March 3rd!
We have already received a hundred submissions from all across the globe and will continue to update our map regularly with new events — we are hoping to make it even bigger and better than last year!
As we prepare for the festivities, we have an important announcement for our community: the Arduino team will be holding this year’s official event at Milano Luiss Hub for Makers and Students in Milan, Italy.
The Official Arduino Day program will include an exhibition area with Arduino projects, a talk area, and an activity space for kids. The event is organized in collaboration with Manifattura Milano, a local initiative dedicated to craftsmanship, urban manufacturing and Industry 4.0 promoted by Milan Municipality – Labour Policies Department.
We are currently seeking makers, speakers and activities for the Official Arduino Day in Milan. If you are able to physically attend and/or want to showcase your creations and their impact on your community, please fill out this form by March 3rd. Additionally, we are looking for volunteers to help out during the event, welcoming guests and assisting visitors. If you are interested in this opportunity, please feel free to complete this application. The call for local makers and volunteers will be powered by WeMake.
On Arduino Day, we will also support LoRa and the City, a hackathon organized by Codemotion and A2A, that will take place in Milan at Casa dell’Energia from March 16th to 17th. If you want to join the hackathon as an individual or a group, apply here — the winners of the two challenges (urban mobility and monitoring and energy and sustainability) will receive a €3,000 Amazon coupon.
Stay tuned over the next few weeks as we will be providing updates on the Official Arduino Day agenda. In the meantime, don’t forget to apply on the Arduino Day website and share your celebration on social media using the hashtag #ArduinoD19.
Come annunciato di recente, il 16 marzo celebreremo Arduino Day 2019; se volete festeggiare con noi e organizzare un evento community, avete tempo fino al 3 Marzo per mandare la vostra proposta attraverso questo form!
Abbiamo già ricevuto un centinaio di candidature da tutto il mondo e continueremo ad aggiornare regolarmente la nostra mappa con nuovi eventi: speriamo di renderlo ancora più grande rispetto agli scorsi anni!
Mentre ci prepariamo per la festa, abbiamo un annuncio importante per la nostra community: Official Arduino Day, ovvero quello organizzato dal team Arduino, per il 2019 si terrà al Milano Luiss Hub for Makers and Students a Milano!
Il programma prevede un’area espositiva con progetti Arduino, un’area talk e uno spazio per con attività gratuite per i più piccoli. L’evento è organizzato in collaborazione con Manifattura Milano, l’iniziativa dedicata all’artigianato, alla produzione urbana e all’Industria 4.0 promossa dal Comune di Milano – Assessorato Politiche del Lavoro.
Call for maker and volunteers! Stiamo cercando maker e speaker per l’Official Arduino Day a Milano. Se puoi partecipare fisicamente all’evento e vuoi mostrare il tuo progetto o raccontare l’impatto che ha avuto sulla tua comunità, completa questo form entro il 3 Marzo. Stiamo anche cercando volontari e volontarie che diano una mano durante l’evento, dando il benvenuto ai nostri ospiti, oppure aiutandoci con le attività. Se ti interessa questa opportunità, compila questo form. La call for maker and volunteers di Milano e dintorni è supportata da WeMake.
Durante Arduino Day, daremo supporto ad un’altra iniziativa a Milano, LoRa and the City, un hackathon che avrà luogo presso la Casa dell’Energia tra il 16 e il 17 Marzo. Se vuoi partecipare come singolo o con il tuo gruppo, clicca qui – in palio per le due sfide dell’hackathon (Urban Mobility and monitoring and Energy and Sustainability) ci saranno due buoni da 3000 € per Amazon.
Continua a seguirci, durante le prossime settimane condivideremo tutti i dettagli dell’agenda di Arduino Day. Nel frattempo, non dimenticarti di mandare la tua application attraverso il sito di Arduino Day e di condividere i festeggiamenti sui social con l’hashtag #ArduinoD19.
If you ever wondered about building your own multimeter, YouTuber Electronoobs shows us just how to do so with an Arduino Nano.
Aside from the Nano, he’s using a 128×64 OLED screen to display stats and battery level, and a 16-bit ADC for precise measurements. Power is provided by a small onboard LiPo battery, and he’s even included a charging module to help keep things topped off. Everything is housed inside a custom 3D-printed case.
The device doesn’t just measure voltage, resistance, and current, but is capable of reading capacitance and inductance as well—measurements that you wouldn’t necessarily expect on a commercial meter. If you’d like to create your own, the schematic and code are available on Electronoobs’ site.
Powering small robots could be considered the specialty of Arduino boards, but what if you want to control something much bigger? There are, of course, ways to do this, but larger motors are naturally more difficult to source. This hasn’t deterred YouTuber The Post Apocalyptic Inventor, however, who has been exploring the use of European-style washing machine motors to drive a large steel tubing robot chassis.
While the project is not yet finished, he’s turned to an Arduino Uno for experimental control along with a variety of other components to provide the proper power.
Be sure to check out video below of this robot-in-progress if you’re interested in “beefing up” your next project!
An Arduino-controlled robotic button dispenser for your next event
Arduino Team — February 12th, 2019
Giving away buttons at Maker Faires or trade shows is a great way to promote your brand, but what if you want to dispense these trinkets in style? That was the idea behind this automated button dispenser mechanism from Jeremy S. Cook, which drops buttons one at a time, and uses a capacitive sensor to detect when someone presses a marked “activation circle” on its base.
When triggered, the Arduino Uno commands two servo motors in sequence to release the lower button, while holding the other stacked buttons in place. The button-in-motion then proceeds down a 3D-printed slide, shooting out into the receiver’s hands—or floor depending on one’s reflexes!
Be sure to check out the build process in the video below, and you can find code/print files on GitHub if you’d like to make your own!
Fluoride can be healthy in certain concentrations, but above a certain level it instead has the opposite effect, causing serious dental and bone diseases. While the cost and benefit of any substance use has to be carefully weighted, up until now, verification that water source isn’t contaminated—above just 2 ppm—has been the purview of well-equipped laboratories.
The prototype device used with SION-105 to detect fluoride anions in drinking water (Photo: Marie-Thé and Etienne Roux)
Researchers at EPFL in Lausanne, Switzerland, however, have come up with a technique that can accurately determine fluoride concentrations using only a few drops of water. The key to this development is a new compound known as SION-105, which is normally luminescent, but darkens when it encounters fluoride. This means that instead of more expensive laboratory equipment, UV LEDs can be used with a photodiode to quantitatively measure the substance’s appearance, and thus the quantity of fluoride in drinking water.
A photograph of SION-105 suspended in solvents with (L) and without (R) fluoride ion contamination. (Photo: Mish Ebrahim)
From the images in EPFL’s write-up, the prototype test apparatus appears to utilize several commonly available components, including an Arduino Uno and small OLED display for user feedback.
Published in the Journal of the American Chemical Society (JACS), the device is named SION-105, is portable, considerably cheaper than current methods, and can be used on-site by virtually anyone.
The key to the device is the design of a novel material that the scientists synthesized (and after which the device is named). The material belongs to the family of “metal-organic frameworks” (MOFs), compounds made up of a metal ion (or a cluster of metal ions) connected to organic ligands, thus forming one-, two-, or three-dimensional structures. Because of their structural versatility, MOFs can be used in an ever-growing list of applications, e.g. separating petrochemicals, detoxing water, and getting hydrogen or even gold out of it.
SION-105 is luminescent by default, but darkens when it encounters fluoride ions. “Add a few droplets of water and by monitoring the color change of the MOF one can say whether it is safe to drink the water or not,” explains Mish Ebrahim, the paper’s first author. “This can now be done on-site, without any chemical expertise.”
After purchasing a new television, maker Andreas Spiess’ remote no longer worked seamlessly with the controller his family had been using. While a universal remote could have solved the problem, in order to keep things simple to use, he instead came up with an infrared “babel fish” signal translator—named after the language translation animal Hitchhiker’s Guide to the Galaxy’s.
The device receives infrared signals from the original remote, then uses an Arduino Nano to pass the properly translated pulses on to his TV and receiver. A 3W IR diode transmits these new signals with the help of an N-channel MOSFET, giving it enough power to control each component, even without the proper line-of-sight orientation.
It’s a hack that could be useful in many situations, and Speiss goes over how it was made, along with design requirements in the video below.
Visualize tunes with James Bruton’s laser projector graphic EQ display
Arduino Team — February 7th, 2019
If you’d like to visualize your music, VU meters make an excellent tool. While they are generally built into audio equipment, maker James Bruton had the idea to construct his own using lasers. His setup features an MSGEQ7 module to separate sound frequencies, sending data on seven different ranges to an ArduinoMega board.
The Arduino then uses this information to selectively lower seven shutters via servos. When lowered, these shutters hide part of the lines formed by lasers and a spinning mirror assembly to indicate each sound frequency’s intensity.
The resulting machine not only effectively projects a visual of the music playing on a nearby wall, but also looks like some sort of mythical beast or contraption, progressively waving its appendages while emitting eerie green light!
Although this kind of project can be fun, be sure to wear the proper safety equipment when dealing with powerful lasers!
In our pursuit to democratize Internet of Things development, today we are excited to announce the Arduino IoT Cloud!
The Arduino IoT Cloud is an easy-to-use platform that makes it very simple for anyone to develop and manage their IoT applications, then deploy them to a large number of users. It allows users to create applications that solve real-life problems, and hopefully, improve their lives.
With the launch of the Arduino IoT Cloud, Arduino now provides its one million users a complete end-to-end approach to IoT that includes hardware, firmware, cloud services, and knowledge. After six months of private beta testing, I am very pleased to release the public beta of the Arduino IoT Cloud with automatic dashboard generation, Webhooks support, and full TLS secure transport.
— Luca Cipriani, Arduino CIO
Convenience and flexibility are key considerations for the Arduino IoT Cloud. Arduino boards usually require you to program them by entering code by way of a sketch — now the Arduino IoT Cloud can do this for you. It will quickly and automatically generate a sketch when setting up a new thing, thus enabling a developer to go from unboxing their board to a working device within five minutes. The Arduino IoT Cloud also provides other methods of interaction, including HTTP REST API, MQTT, Command-Line Tools, Javascript, and Websockets.
Going from an idea to a fully-functional IoT device has been a tedious process even for the most advanced engineers and developers… until now. Arduino now offers a complete platform with the MKR family providing a streamlined way to create local IoT nodes and edge devices using a range of connectivity options and compatibility with third-party hardware, gateway, and cloud systems. Whilst the Arduino IoT Cloud lets users manage, configure, and connect not only Arduino hardware but the vast majority of Linux-based devices — truly democratizing IoT development.
Görkem Bozkurt has a bit of a problem. When he gets going with a build, sometimes safety glasses are forgotten in the excitement of making something new. While understandable, this doesn’t make things any less dangerous, so he came up with a novel idea to put on his safety specs on automatically.
His wearable creation attaches an Arduino Nano and a MAX4466 electret mic amplifier to the top of a previously normal hat, along with a small servo connected to a pair of lens below the bill. If a loud sound is heard, the goggles are lowered by the servo in response. They’re then retracted when the noise, and hopefully the danger, is gone.
While the system is still very much a work-in-progress, it’s an entertaining concept that Bozkurt hopes to develop further.
“Rare Candy” played on even more rare electronic instrument
Arduino Team — February 5th, 2019
According to musician/maker Ruben Dax, “Few things make him happier than being able to create things that create things.” As seen in the video below, what he’s created is a very strange cylindrical instrument with an array of buttons and what appears to be an auxiliary loop controller.
What he creates with it is music that starts off as simple “plink-plonk” sounds, but builds up into something of an orchestral arrangement.
The DIY device utilizes an Arduino Mega for control, with a bunch of pushbuttons and a dual-axis joystick for inputs. Button info is then sent to his computer over Bluetooth, which takes care of actual MIDI generation.
As cool as this is, a new gadget is in the works, which uses a Leonardo and other hardware for plug-and-play functionality. Whether this will interfere with the instrument’s unique rotating action remains to be seen!
Open source microfluidics platform uses Arduino CNC control
Arduino Team — February 5th, 2019
Microfluidics deals with the manipulation of tiny amounts of liquid, and as such, specialized equipment must be used for any sort of measurable experimentation. While you could purchase an expensive commercial solution, the Poseidon system—developed by students at the California Institute of Technology—presents an excellent open source option which can be built for a fraction of the cost.
Fluid distribution is managed by a computer GUI or via a terminal window. Steppers handle each of the system’s three “axes,” and push fluid out of syringes under control of an ArduinoUno and CNC shield. A microscope is also available for a full experimental setup.
The Poseidon syringe pump and microscope system is an open source alternative to commercial systems. It costs less than $400 and can be assembled in an hour. It uses 3D-printed parts and common components that can be easily purchased either from Amazon or other retailers. The microscope and pumps can be used together in microfluidics experiments, or independently for other applications. The pumps and microscope can be run from a Windows, Mac, Linux, or Raspberry Pi computer with an easy to use GUI.
The Poseidon system was designed to be customizable. It uses the Raspberry Pi and Arduino electronics boards, which are supported by a strong ecosystem of open source hardware and software, facilitating the implementation of new functionalities.
The pump driver uses an Arduino with a CNC shield to run up to three pumps. Each pump has a stepper motor that drives lead screw which in turn moves a sled that is mounted on linear bearings. The displacement of the sled moves the syringe forward or backward allowing the user to dispel or intake liquid.
The controller station uses a Raspberry Pi with a touchscreen to connect to the Arduino and microscope via USB. Because the microscope and Arduino use USB connections, they can alternatively be connected to a computer instead of a Raspberry Pi.
Do you like grilled cheese? Would you rather not make it yourself? If so, then the Cheeseborg by Taylor Tabb, Mitchell Riek, and Evan Hill could be the perfect device for you!
This assembly line-like robot first stacks bread-cheese-bread using a vacuum gripper, and passes the unheated sandwich onto the grill via a pusher mechanism. Butter spray is first added to the bottom of the grill, then the top of the sandwich when present in order to coat both sides. Upon heating, the finished sandwich is pushed into a “food slot” for consumption.
Electronics are controlled using an Arduino Mega, while Google assistant running on a Raspberry Pi allows for voice activation. So the next time you’re hungry, all you have to do is ask, “Hey Google, make me a grilled cheese please!”
Our goal was to make an easy snack even easier. The design combines 7 individual subsystems enabling the assembly, cooking, and serving of a perfect, repeatable, tasty grilled cheese.
A big learning was how challenging it is to manipulate bread and cheese repeatedly. After several iterations, we converged on a vacuum lift mechanism, inspired by industrial robotic manipulation of small electronics. Due to the porosity of bread and the gloss of cheese, it was very challenging to find a mechanism working for both, but vacuum certainly seemed to do the trick!
For the actuation of of the electromechanical subsystems, we use stepper motors and servos combined with linkages, lead screws, linear bearings, a winch, and other mechanical components. For buttering (not pictures) we have a delightful spray butter can attached to an acrylic stand beside the grill.
Beyond the mechanisms, which are controlled by an Arduino Mega, the system is enabled with Google Assistant SDK running on an Raspberry Pi 3B, so the whole thing can be activated just by saying “Hey Google, make me a grilled cheese please!” From there, the machine stacks the bread, cheese, bread, then slides over the platform toward the grill as the buttering station sprays the bottom of the grill. Once the sandwich is placed on the grill, the butter sprays again (to coat the top of the sandwich). Then the grill closes, and cooks for the precise amount of the time for the perfect gooey grilled cheese! Then the grill opens and the sandwich is kicked to the serving slot for a hungry friend to enjoy.
Augment your tongue’s senses with the Cthulhu Shield
Arduino Team — January 31st, 2019
Whether one of your senses is weak or non-existent, or you would simply like a way to augment your perception and control options, the Cthulhu Shield can be applied in either situation.
The device takes the form of an Arduino Uno or Mega shield, with a strange flexible electrode setup that is placed directly on the user’s tongue.
When these electrodes are fired, they activate nerve fibers on the tongue, producing a feeling like that of carbonated bubbles popping. This can then be used to convey information to the user, whether this is visual, sound, or even Internet updates or other non-traditional stimuli. Importantly, it can also be utilized as an interface for tongue computer control.
The Cthulhu Shield lets anyone experiment and make devices that can expand your sensory experience!
We’ve made android apps and example programs that will let you use the Cthulhu Shield and your smartphone to ‘see’ and ‘hear’ with your tongue without needing to write a single line of code!
For those of you interested in making your own projects, we’ve written an easy to use Arduino library and provided example code to get you started on projects including tongue-heat-vision, tongue-based GPS directions, and soon, tongue-ultrasonic hearing. But don’t limit yourselves to the examples we’ve provided, the only limit to what you can make is your imagination!
Finally, we designed the Cthulhu to be used as a tongue based computer interface (because if you already have something in your mouth, why not use it to control your computer)? Write your own code to hotkey video game actions, send text messages, or control a wheelchair or mobility device with your tongue.
Three voltmeters combined into one clock any engineer would love
Arduino Team — January 30th, 2019
Apparently not satisfied with available timekeeping devices, ElegantAlchemist crafted a unique clock using an Arduino Nano, an RTC module, and three formerly 1000VAC analog meters.
The first order of business for the build was converting the meters into something that could traverse its range with only 5V, accomplished by replacing the stock resistor, diode, and capacitor with a 2.2kohm resistor.
Now controllable via Arduino, new faceplate labels were designed in CorelDraw for a very professional look. Everything was encased in an aluminum stomp box enclosure—actually several as multiple clocks were constructed—and RGB LEDs were also added behind each display.
Waking up before 9am can be a challenge for Nikodem Bartnik, but he also hates to waste time sleeping when he could instead make something.
In order to help him with this “joyous” task, he assembled a line-following robot that scoots his phone out of the room in the morning, forcing him to get out of bed and chase it down.
The device utilizes a pair of gearmotors in a standard tank-like configuration for movement, and sensors to follow a black line on the floor. A sound sensor allows its Arduino Uno controller to pick up on alarm sounds coming from his phone, which is mounted on the robot with a 3D-printed holder. When activated, it follows the path out of his room, waiting for Bartnik’s bleary eyed—but awake—arrival.
When we last saw this omni robot by Jeremy S. Cook, it was lurching around under Arduino Nano and Bluetooth command. After much work, he finally has it to a state where it rolls nicely on a flat surface—even carrying a little strandbeest at just after 8:30 in the demo video.
The biggest revision for the robot was new “grippier” wheels, but electronics were also enhanced, including a LiPo battery (with a voltage divider monitoring circuit), potentiometer for speed control, and LED eyes.
Changes were facilitated by a screw terminal board attached to the Nano, which minimized solder work, while keeping the robot’s wiring secure. More details and code are available here, while the upgrade/troubleshooting process can be seen in the video below.
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