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Scitalks: Smart people on cool topics

Scitalks: Smart people on cool topics
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Home | MIT Video MIT has announced a $1 billion commitment to address the global opportunities and challenges presented by the prevalence of computing and the rise of artificial intelligence (AI). Read more: The initiative marks the single largest investment in computing and AI by an American academic institution, and will help position the United States to lead the world in preparing for the rapid evolution of computing and AI. Watch more videos from MIT: The Massachusetts Institute of Technology is an independent, coeducational, privately endowed university in Cambridge, Massachusetts. The MIT YouTube channel features videos about all types of MIT research, including the robot cheetah, LIGO, gravitational waves, mathematics, and bombardier beetles, as well as videos on origami, time capsules, and other aspects of life and culture on the MIT campus. #massachusettsinstituteoftechnology Show less

The Do It Yourself Scholar | Explore the best in free web learning. Online Computer Science Courses In its purest form, computer science is the research and development of technology that solves specific problems. Computer science has brought the world smart phones, GPS systems, the gaming industry and tablet computing, along with technological developments that assist government, industry and medicine. In addition to creating new technology, computer scientists also make improvements to existing technology and study the ways computers can make our lives easier. One can learn more about this field of study through several online computer science courses. As with any branch of science, computer scientists perform research that establishes new information. Most computer scientists work on a theoretical level, using technology to study technology. Undergraduate degree programs in computer science require mathematics, physics and engineering classwork. During the first two years of a standard 4-year program, students focus on the basics: Hardware refers to the machinery of computers.

Complexity Explorer Practical Arduino: News The World Famous Index of Arduino & Freeduino Knowledge Arduino Parts & Kits Online Melbourne, Buy Microcontroller Boards, Arduino Electronic Components - Welcome Secret-Knock Gumball Machine One of the best things about exhibiting at Maker Faire is giving attendees a challenge. For the 2010 Maker Faire Bay Area, I decided to combine a past project of mine, a door lock that opens only when you give a secret knock, with a standard crowd pleaser: candy. The result was this Secret-Knock Gumball Machine, which tempted and tested the crowds at Maker Faire to guess the right rhythm and receive a treat. Since the knock was not terribly secret (I happily handed out hints), it distributed hundreds of gumballs over the event’s two days. The “secret” knock defaults to the famous “Shave and a Haircut” rhythm, but you can program custom knocks by simply pressing a button and knocking a new pattern. Inside the machine, a piezo sensor picks up sounds from the front knock panel, while an Arduino microcontroller recognizes the target pattern and controls a servo-driven gumball-dispensing wheel. Downloadable files MAKE: Amends

Charlieplexing LEDs with an AVR ATmega328 (or Arduino) Charlieplexing is an ingenius method for controlling many LEDs without using many microcontroller pins. You can turn on or off one LED at a time. To light more than one LED at a time, you can scan the LEDs by turning a sequence of them on and off really fast. The number of LEDs you can control is determined by this formula: N pins * (N pins – 1). For example, if you have 4 pins, you can control 12 LEDs (4 pins * 3 pins). If you have 2 pins, you can control two LEDs, which makes it a little silly to employ Charlieplexing, since you could simply connect each LED to an MCU pin and then to ground. Here is an ATmega328 on a custom PCB controlling 20 LEDs (the 21st is on its own pins) with just 5 pins: Charlieplexing takes advantage of the fact that LEDs are diodes: Current flows in only one direction through an LED. The ATmega328 pins can source upwards of 40 mA. In this project, we’ll set up a simple Charlieplexing circuit with 12 LEDs controlled by an Arduino that will look like this:

RGB Liquid Crystal Display Tutorial Step #2: PrevNext Now we will prepare everything to start connecting to the Arduino. Step #5: Connect pin 15 to 5V and then connect either pin 16, 17, or 18 to GND depending on what color you want for your backlight. Step #8: Now you have connected the display to the Arduino. Step #9: If you got everything right, this is how it should look.

Aquaponics – Online Temperature and Humidity This project is a part of the Arduino Data Acquisition and Control System described in the upcoming book Automating Aquaponics with Arduino. You can see a live version of this tutorial here: While this project is designed with aquaponics in mind, it does not require an aquaponic system, making it useful for other projects such as home automation. The included application is, therefore, bare-bones, making it easier to integrate into any other App Engine project. How It Works Every sixty seconds, the Arduino will test its connection to App Engine. On startup, the web browser (client) will create a temperature and humidity gauge with values at zero. Software Versions: 1. 2. 3. 4. 5. Update I removed the dependency on the Timer library – it simply wasn’t needed for this application. The Arduino code has been updated. For whatever reason, the Arduino fails to connect on the third HTMLRequest. Finally, I have the serial output on by default.

Difficulty: Easy My older son recently started school and needed his own desk for doing homework. I wanted to make something nicer than a simple tabletop with legs, and realized that I could also build in a bit of fun for when the homework is finished. Both my boys and I still had space travel on our minds from our summer trip to Kennedy Space Center. The desk resides under my son's loft bed (which I also built), and stays closed until the homework is finished: When playtime begins, the lid flips up to reveal the Mission Control console: As I mentioned in the video, I painted the underside of the lid with magnetic primer. The programming of the console, which I posted to GitHub, has the Arduino and the Raspberry Pi working cooperatively. The EECOM panel contains four potentiometers that are each mapped to a 12-segment bargraph display. The CAPCOM panel has connections for the headset as well as volume controls. "C&WS" stands for Caution and Warning System.

Difficulty: Moderate My older son recently started school and needed his own desk for doing homework. I wanted to make something nicer than a simple tabletop with legs, and realized that I could also build in a bit of fun for when the homework is finished. Both my boys and I still had space travel on our minds from our summer trip to Kennedy Space Center. For this desk project, I decided to go with a NASA theme. The desk resides under my son's loft bed (which I also built), and stays closed until the homework is finished: When playtime begins, the lid flips up to reveal the Mission Control console: As I mentioned in the video, I painted the underside of the lid with magnetic primer. The programming of the console, which I posted to GitHub, has the Arduino and the Raspberry Pi working cooperatively. The EECOM panel contains four potentiometers that are each mapped to a 12-segment bargraph display. The CAPCOM panel has connections for the headset as well as volume controls.

Difficulty: Difficult My older son recently started school and needed his own desk for doing homework. I wanted to make something nicer than a simple tabletop with legs, and realized that I could also build in a bit of fun for when the homework is finished. Both my boys and I still had space travel on our minds from our summer trip to Kennedy Space Center. For this desk project, I decided to go with a NASA theme. I researched the Apollo Program as well as NASA's Mission Control Center, and designed my own console roughly based on those. I say "roughly" because the actual Mission Control does more monitoring than controlling, and isn't awash in the whiz-bang rocket noises young kids appreciate. The desk resides under my son's loft bed (which I also built), and stays closed until the homework is finished: When playtime begins, the lid flips up to reveal the Mission Control console: As I mentioned in the video, I painted the underside of the lid with magnetic primer.

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