Schlagwort: Uno

  • Creating an over-engineered random number generator Arduino shield

    Creating an over-engineered random number generator Arduino shield

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    Creating an over-engineered random number generator Arduino shield

    Arduino Team — March 17th, 2021

    Often when working with Arduino projects, you’ll need to generate a random number. There’s a random() function built into the IDE that works acceptably in many cases, but maker_ATOM wanted to take things to the next level, creating an “over engineered true random value generator.”

    This device sits on top of an Arduino Uno as a shield, and features input from a floating pin a seed value. It adds light input as a second seed value with an LDR, and ambient noise via a microphone as a third value. These are used to choose from an array of Pi digit values, which are also random, revealing outputs on its OLED display at the push of a button that would be exceedingly difficult to predict! 

    More details on the project can be found in maker_ATOM’s Instructables post.

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    Website: LINK

  • This robotic cue can turn anyone into a pool shark

    This robotic cue can turn anyone into a pool shark

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    This robotic cue can turn anyone into a pool shark

    Arduino Team — February 22nd, 2021

    If you want to get better at billiards, the conventional wisdom is to practice. However, if you’re YouTuber Shane Wighton, you build a robotic cue to play the game for you.

    His device looks like a cross between a pool stick, a sci-fi robot, and a heavily-modified weed wacker. Instead of precisely manipulating the cue, you just put it roughly in place, hit the trigger, and let it sink the shot.

    The setup employs a servo/linkage-controlled platform for precise aiming, and a pneumatic actuator that pushes the tip into the selected ball when ready. An Arduino board is implemented to fire the actuator via a solenoid valve, and it can increase or decrease pressure with two other valves based on gauge input. Computer vision is used to sense ball and cue position, and the system even projects alignment guides and predicted trajectories on the table itself.

    [youtube https://www.youtube.com/watch?v=vsTTXYxydOE?feature=oembed&w=500&h=281]

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  • This bin will sort your trash and recyclables automatically

    This bin will sort your trash and recyclables automatically

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    This bin will sort your trash and recyclables automatically

    Arduino Team — February 18th, 2021

    Often you might see a recycling bin next to a trash can, and notice that someone else has thrown their waste into the wrong container. To help with this conundrum, the team of Shalin Jain, Viraj Singh, Edward Chen, and Joshua Kim created a double-sided container that sorts things automatically.

    Their device, dubbed “Splash,” takes a webcam image of the item presented to it, analyzes this with a Python script and the Azure Custom Vision API, and reports back to an Arduino Uno controller with its findings. Depending on the results, the Arduino then uses a driver board and motor to properly position a flap, directing refuse into in the correct bin.

    [youtube https://www.youtube.com/watch?v=FJJsXeC6vDM?feature=oembed&w=500&h=281]

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  • This program can tell if you paid attention to text

    This program can tell if you paid attention to text

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    This program can tell if you paid attention to text

    Arduino Team — February 18th, 2021

    When you read a book, or… other website, you may find your mind wandering from time to time. This isn’t always a big deal, but if you want to ensure that you’re getting every last bit of information on a page, YouTuber “I made this” may have the perfect solution.

    His “program that could tell if you are paying attention” employs eye tracking to see where on the page you’re looking, and correlates this with input from a brainwave sensor. Conveniently, the particular unit used here (salvaged from a NeuroSky toy) outputs an attention value from 0-100. An Arduino board reads the EEG directly and passes data along to the computer, which then highlights text green for “paid attention,” and red for “not paying attention.”

    [youtube https://www.youtube.com/watch?v=-lExjGT9Ylo?feature=oembed&w=500&h=281]

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  • Play Simon and the piano on this glowing geodesic dome

    Play Simon and the piano on this glowing geodesic dome

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    Play Simon and the piano on this glowing geodesic dome

    Arduino Team — February 18th, 2021

    Geodesic domes, approximately spherical structures made from an arrangement of triangular faces, are fascinating in and of themselves. Add light and sound, as was done here by students at the University of Málaga in Spain, and you have something truly magical.

    Their device is a derivation Jon Bumstead’s larger dome project, shrinking his 120-triangle design down to a more manageable 40. The frame was constructed out of wood and 3D-printed PLA, with triangle measurements calculated using this Desert Domes tool.

    An Arduino Uno controls the system’s programmable LED and sound output, while IR sensors with 74LS151 multiplexers allow for interaction. The dome features several modes, which include creating colorful patterns at the touch of each triangle, producing music, and even playing the classic game of Simon. You can see it in action below!

    [youtube https://www.youtube.com/watch?v=IpwqxL10pY8?feature=oembed&w=500&h=281]

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  • Say hi to HuggieBot 2.0, a robot that knows when to hug and when to let go

    Say hi to HuggieBot 2.0, a robot that knows when to hug and when to let go

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    Say hi to HuggieBot 2.0, a robot that knows when to hug and when to let go

    Arduino Team — February 16th, 2021

    Do you need a hug? Are friends and family not around? As seen here, researchers from the Max Planck Institute for Intelligent Systems (MPI-IS) and ETH Zürich may have just the solution in the form of HuggieBot 2.0.

    Based on a previous robot created by one of the paper’s co-authors Alexis E. Block, HuggieBot 2.0 uses computer vision to detect when a participant is approaching for an embrace, and wraps its 6-DOF JACO arms around them when in position.

    An LCD screen allows HuggieBot to output facial expressions, which along with overall robot functions, are controlled by an onboard computer. To determine when to end the hug, it employs an inflatable “HuggieChest” microphone and pressure sensor setup, read with the help of an Arduino Uno. When a person releases the hug, the robot can do the same, averting any robo-human awkwardness.

    More details can be found in Tech Xplore’s article and in the team’s paper here.

    (Image credit: Block et al.)

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  • James Bruton demonstrates the Coanda effect with an Arduino-controlled rig

    James Bruton demonstrates the Coanda effect with an Arduino-controlled rig

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    James Bruton demonstrates the Coanda effect with an Arduino-controlled rig

    Arduino Team — January 20th, 2021

    The Coanda effect, as you may or may not know, is what causes flowing air to follow a convex surface. In his latest video, James Bruton shows how the concept can used as a sort of inverted ping pong ball waterfall or staircase.

    His 3D-printed rig pushes balls up from one fan stage to another, employing curved ducts to guide the lightweight orbs on their journey.

    The fan speeds are regulated with an Arduino Uno and motor driver, and the Arduino also dictates how fast a feeder mechanism inputs balls via a second driver module. While the setup doesn’t work every time, it’s still an interesting demonstration of this natural phenomenon, and could likely be perfected with a bit more tinkering.

    [youtube https://www.youtube.com/watch?v=Nfm7YO0PqRU?feature=oembed&w=500&h=281]

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  • This Arduino-based speed bag counts your punches

    This Arduino-based speed bag counts your punches

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    This Arduino-based speed bag counts your punches

    Arduino Team — January 19th, 2021

    Creator DuctTapeMechanic loves sports and electronics, so for a recent project he decided to combine his two passions by hacking a speed bag to keep track of his punches.

    As shown in the video below, the first step was to get it physically set up, modding an old metal bed frame into a support structure. He also added a recessed NPN capacitive sensor to pick up when the bag hits the back of the platform.

    The sensor sends “hit” signals to an Arduino Uno via a PC817 optocoupler. The board then counts punches and displays the number of hits on an LCD screen mounted just above eye level.

    Whether it’s competing with friends or simply improving your boxing skills, DuctTapeMechanic’s system looks like a fun one to build yourself!

    [youtube https://www.youtube.com/watch?v=a3Svc7-Im6g?feature=oembed&w=500&h=281]

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  • Making your own Segway, the Arduino way

    Making your own Segway, the Arduino way

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    Making your own Segway, the Arduino way

    Arduino Team — January 18th, 2021

    After obtaining motors from a broken wheelchair, this father-son duo went to work turning them into a new “Segway.”

    The DIY transporter is controlled by an Arduino Uno, along with a pair of motor drivers that handle the device’s high current needs. An MPU-6050 allows it to react as the rider leans forward and backwards, moving with the help of a PID loop. Steering is accomplished via a potentiometer, linked to a bent-pipe control stick using a bottle cap and glue.

    Impressively, the only things purchased for the build were the motor controllers, as the rest of it was hacked together with available parts. As seen in the video below, it looks like a fun conveyance, though they were certainly wise to wear helmets while testing!

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  • Fighting smartphone addiction with Arduino

    Fighting smartphone addiction with Arduino

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    Fighting smartphone addiction with Arduino

    Arduino Team — January 11th, 2021

    How many times a day do you grab your phone for trivial purposes, such as scrolling through social media? Nick O’Hara found that his number was around 100 times during the workday, which sounds like a lot, but is likely pretty typical. To combat these micro-distractions, he built an Arduino-based device that senses when a phone is placed on top of it using a microswitch.

    When the phone is lifted, it connects to the network via a WiFi module, and donates money to charity. What O’Hara discovered was that his usage went down significantly when he automatically donated $1 per pickup, settling on about 10 checks, or $10 each day. As he increased donation/pickup level, his daily usage still came out to about $10, which would seem to be an interesting psychological experiment.

    [youtube https://www.youtube.com/watch?v=0y8oc-UE3bw?feature=oembed&w=500&h=281]

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  • Let this robotic system sort your LEGO bricks for you

    Let this robotic system sort your LEGO bricks for you

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    If you don’t enjoy sorting LEGO, you will be pleased to know that students at Bruface – or the Brussels Faculty of Engineering in Belgium – are working on an automated machine to do it for you!

    The team’s prototype device detects brick colors on a conveyor belt and picks them up via a gantry-style gripper assembly. It then places each piece in an individual bin by color using a TCS34725 sensor, saving a step if you’d like to keep that castle wall consistent.

    As of now the Arduino-powered apparatus consists of several elements — including feeding system, carrier, gripper, and control panel — that work well individually, but haven’t been fully integrated as a whole. The project will hopefully be completed this January, which should be impressive based on the current clips.

    [youtube https://www.youtube.com/watch?v=fQsSVZsk7ME?feature=oembed&w=500&h=281]

    [youtube https://www.youtube.com/watch?v=Zee1kmi-s-o?feature=oembed&w=500&h=281]

    [youtube https://www.youtube.com/watch?v=obr5LWwXKMo?feature=oembed&w=500&h=281]

    [youtube https://www.youtube.com/watch?v=nt04UzIHJds?feature=oembed&w=500&h=281]

    Boards:Uno
    Categories:ArduinoRobots

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  • This machine stacks dominoes automatically

    This machine stacks dominoes automatically

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    This machine stacks dominoes automatically

    Arduino Team — December 26th, 2020

    Arranging dominoes in such a way that they knock each other down in sequence can be a fun pastime, but what if you would like a machine to take care of lining them up for you? As seen in the video below, Lewis of DIY Machines has come up with just such a device featuring 3D-printable parts and an Arduino Uno for control.

    The project uses a single gearmotor to both move the robot over the floor and actuate the stacking mechanism, creating consistent spacing without the need for additional sensors. A steering servo points it in the right direction, and its motion can be pre-programmed via the Arduino IDE.

    What’s more, the machine can be driven from a Blynk smartphone app over Bluetooth (to be explained in an upcoming video). It’s capable of holding around 140 dominoes at a time, and includes a carousel setup that can be changed to keep the placement going!

    [youtube https://www.youtube.com/watch?v=QsAplPLtriw?feature=oembed&w=500&h=281]

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  • Making a mini 360° LiDAR for $40

    Making a mini 360° LiDAR for $40

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    Making a mini 360° LiDAR for $40

    Arduino Team — December 21st, 2020

    LiDAR (or “light detection and ranging”) sensors are all the rage these days, from their potential uses in autonomous vehicles, to their implementation on the iPhone 12. As cool as they are, these (traditionally) spinning sensors tend to be quite expensive, well out of reach for most amateur experimenters. Daniel Hingston, however, has managed to build his own unit for under $40, using an Arduino Uno and a pair of VL53L0X time-of-flight (ToF) sensors.

    The lighthouse employs a small gearmotor to rotate the two sensors on top of its cylindrical 3D-printed housing, passing signals to the Arduino via a slip ring. Data can then be visualized using a Processing sketch running on a nearby computer.

    As seen at around the 10:00 mark in the video, the setup has been utilized to map out different test enclosures, and could be excellent for use in small robotic applications. More details can be found in Hingston’s tutorial here.

    [youtube https://www.youtube.com/watch?v=uYU534Wn4lA?feature=oembed&w=500&h=281]

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  • Use an Arduino and a pair of stepper motors to automatically wind pickups

    Use an Arduino and a pair of stepper motors to automatically wind pickups

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    Use an Arduino and a pair of stepper motors to automatically wind pickups

    Arduino Team — December 18th, 2020

    Electric guitars use pickups to sense string vibrations and make music. While a wide variety are available for purchase, what if you would like to make your own custom device for audio experimentation? In the video below, Ezra Spencer from the Mixed Signal shows how to do just that by automatically winding a pickup coil with an Arduino Uno, a CNC shield, and a pair of stepper motors.

    Here, the winding-in-progress is mounted on one of the steppers, which spins in the neighborhood of 10,000 times to create a spool of pickup wire. Meanwhile, the carriage is moved left and right by the other stepper to produce an even wire distribution. If all goes well, after 20 minutes or so you can return to find your new pickup assembly, wound and ready for further exploration!

    [youtube https://www.youtube.com/watch?v=_2iHD2RhGzs?feature=oembed&w=500&h=281]

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  • A fully-animated, Arduino-powered launchpad for the LEGO Saturn V model rocket

    A fully-animated, Arduino-powered launchpad for the LEGO Saturn V model rocket

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    A fully-animated, Arduino-powered launchpad for the LEGO Saturn V model rocket

    Arduino Team — December 16th, 2020

    Approximately 18 months ago, Mark Howe embarked on a journey to build an animatronic launchpad and gantry for a LEGO Saturn V model rocket. After approximately 1,000 hours of CAD work, hundreds of hours of 3D printing, and a major redesign, he’s created a truly impressive setup that resembles one of NASA’s.

    Howe’s rocket and structure stand several feet tall, with a crane, sway bar, crew walkway, gantry arms, and service arms that move out of the way using servos. Everything is controlled by Arduino Uno, along with an MP3 shield to play the Apollo 11 countdown audio.

    Once ready for liftoff, the rocket rises via a trio of stepper motor-driven linear actuators, simulating the real thing with a fiery plume of NeoPixels underneath.

    [youtube https://www.youtube.com/watch?v=q7emW9_gui4?feature=oembed&w=500&h=281]

    More details on this dynamic diorama can be found on Howe’s project page.

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  • This system lets you take close-up photos of water droplets with a DSLR camera

    This system lets you take close-up photos of water droplets with a DSLR camera

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    This system lets you take close-up photos of water droplets with a DSLR camera

    Arduino Team — December 16th, 2020

    Rain comes and goes, but as shown in alexpikkert’s water droplet photography write-up, the exact moment of impact can look spectacular when magnified. Capturing that, however, takes a specialized system — and his latest build facilitates shots nicely with an Arduino Uno controller and solenoid valve.

    The rig, which is based on a design from photobuilds.co.uk, positions the solenoid dropper at a certain distance off of the ground. The DSLR camera and flash can then be configured to shoot the splash.

    To snap a pic, the Arduino opens the valve to release up to three drops at carefully timed intervals. After an appropriate delay, it triggers the photography setup using opto-isolators to capture the action.

    Interested in creating your own bouncing droplet photos? More details can be found in alexpikkert’s tutorial.

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  • Living Pixels is a light frame that comes alive when you leave

    Living Pixels is a light frame that comes alive when you leave

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    Living Pixels is a light frame that comes alive when you leave

    Arduino Team — December 15th, 2020

    As smart devices become more ingrained in our everyday lives, it’s perhaps only natural that we start to think of them as living things. What if such gadgets actually did have personalities and emotions that we as humans don’t ever see?

    Zekun Yang’s “Living Pixels” project illustrates this idea in luminescent style, as a picture frame that shows a static pattern of lights when anyone is around. When people aren’t present, it displays a range of emotions on its 16×16 LED matrix, from sleepy, to relaxed, and even angry.

    The unit uses a passive infrared sensor to pick up on human activity, while an Arduino Uno is implemented for control. More info on the build is available in Yang’s write-up, and you can see it in action in the video below.

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  • RobotSculptor uses a six-axis robot arm to sculpt clay models

    RobotSculptor uses a six-axis robot arm to sculpt clay models

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    RobotSculptor uses a six-axis robot arm to sculpt clay models

    Arduino Team — December 3rd, 2020

    Robotic fabrication techniques such as 3D printing enable you to make a copy of a wide variety of items. Actually sculpting something out of clay, however, remains a largely human pursuit. One might also miss the individual style of a sculptor in a finished product.

    RobotSculptor, developed by a team of engineers from ETH Zurich and Disney Research, attempts to address both challenges. The system generates toolpaths from a base mesh design and allows artistic input via mouse strokes during the process. A six-axis robot arm then incrementally removes clay from the model-in-progress, using a custom loop tool.

    An Arduino Uno-controlled turntable acts as a seventh axis for the robot, giving it the ability to reach different areas of the model in order to create complex 3D shapes.

    More details on the project can be found in the researchers’ paper and in Gizmodo’s article here.

    [youtube https://www.youtube.com/watch?v=k39rF0izxUY?feature=oembed&w=500&h=281]

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  • 10 most popular modules and sensors for the Arduino UNO all on one board

    10 most popular modules and sensors for the Arduino UNO all on one board

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    10 most popular modules and sensors for the Arduino UNO all on one board

    Arduino Team — December 1st, 2020

    Getting started with electronics and sensing the world around you is now easier than ever with the new all-in-one Arduino Sensor Kit from Arduino, in partnership with Seeed.   

    The 10 most popular modules and sensors for your Arduino UNO have been integrated onto a single board, providing plug-and-play convenience without the need for any soldering or wiring! Combining basic Grove sensors and actuators for the Arduino UNO, the kit contains a base shield featuring the following modules that can be connected either through the digital, analog, or I2C connectors:

    • An OLED screen
    • 4 digital modules (LED, button, buzzer and potentiometer)
    • 5 sensors (light, sound, air pressure, temperature, and accelerometer)

    Just plug the Arduino Sensor Kit into the Arduino UNO, then you’re ready to follow the Plug, Sketch & Play online lessons that make getting started a breeze.

    The kit is equipped with 16 Grove connectors, which when placed on the board, offer functionality to the various pins. With seven digital connections, four analog connections, four I2C connections, and a UART connection, the base shield can be easily mounted onto an Arduino UNO board and programmed through the Arduino IDE. 

    Now available from the Arduino Store, the Arduino Sensor Kit comes as a standalone kit for only €23.00 / US$23.00, or can be purchased with the Arduino UNO Rev3 board as a great value bundle for €38.70 / US$38.70. For more details, check out our website here.

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  • Control a wheelchair using an EEG headset and Arduino

    Control a wheelchair using an EEG headset and Arduino

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    Control a wheelchair using an EEG headset and Arduino

    Arduino Team — November 25th, 2020

    In an effort to help provide paralyzed patients with an easier way to operate their wheelchairs, these makers have developed a system that uses an OpenBCI brainwave cap to collect electroencephalogram (EEG) and electromyography (EMG) signals, literally from a user’s head. Data is then sent to a PC running OpenBCI software and passed along to an Arduino Uno via Bluetooth for control.

    The project is outlined in its Instructables post, starting off with four controlling four LEDs and progressing to a simple two-wheel drive vehicle. From there, a rather impressive model of a wheelchair was constructed, and moved in much the same way.

    You can see it in action, starting at around 4:30 in the video below.

    [youtube https://www.youtube.com/watch?v=utO4rnZVZIc?feature=oembed&w=500&h=281]

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  • Monitor your heart rate while asleep with ZazHRM

    Monitor your heart rate while asleep with ZazHRM

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    Monitor your heart rate while asleep with ZazHRM

    Arduino Team — November 20th, 2020

    Have you ever wondered what your heart rate looked like when you were catching some Zs? Or perhaps you would like to check up on how someone nearby is sleeping, without actually disturbing that person. The ZazHRM monitoring system by Alan Do lets you do both, with a pulse sensor hooked up to an Arduino Uno, which in turn sends data to an Android phone in almost real-time via Bluetooth.

    The receiving device runs an MIT App Inventor routine, which can output alarms if the person under observation’s heart rate goes out of range. Results are also logged for later analysis.

    While interesting, Do does note that ZazHRM is not a piece of medical equipment, nor is it intended for medical diagnosis. Code and App Inventor info are available on GitHub.

    [youtube https://www.youtube.com/watch?v=e0AOHM8a1eE?feature=oembed&w=500&h=281]

    [youtube https://www.youtube.com/watch?v=RXTW5QtCnFY?feature=oembed&w=500&h=281]

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  • What’s not to love about this realistic beating heart?

    What’s not to love about this realistic beating heart?

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    What’s not to love about this realistic beating heart?

    Arduino Team — November 20th, 2020

    Your heart is an amazing organ, pumping blood through your body and literally keeping you alive. However, building a realistic model of one — as explained in this write-up by Holiday McAllister — can actually be pretty simple.

    Here, silicone is poured into a four-inch heart mold to create the structure, partially hollowed out to accommodate a metal gear micro servo.

    This little motor rotates back and forth under control of an Arduino Uno, making it appear to pulse up and down on a table. One could see this enhanced in a variety of ways, perhaps with a bit of fake blood for an even more lifelike look, or with inputs to the Arduino for interactive capabilities.

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