Science Projects

Normally DIY cat feeders uses simple dispenser. This works great, but it is hard to predict the amount of food that drops in to dish. Mgrenonville started with dispenser based feeder and now introduces second version which is more controllable and predictable. The feeder is controlled by Arduino with proto-shield attached. Time is kept using DS1307 RTC board. And feeder is run with screwdriver motor. There is also an LCD screen where status can be seen. A serial interface is used to modify settings like time, number of feeds and other. Most fun part in this is screw feeder. It is made of Poly-morph which has low melting temperature and is fairly easy to work with. Feeder seems to work pretty smooth and is well blended above cat dish.

Drone Light Painting at Märchenbrunnen. This is a DJI Phantom Drone named Lucy II flying around the “Fountain of Fairy Tales” in lovely Volkspark Friedrichshain in Berlin at 4am.

HOUSTON – (May 7, 2013) – A group of Rice University mechanical engineering students are getting a charge out of having the coolest new shoes on campus. As their capstone project that is required for graduation, four seniors created a way to extract and store energy with every step. Their PediPower shoes turn motion into juice for portable electronics and, perhaps someday, for life-preserving medical devices. Read more:

The poor thing would be much less conspicuous snuggled into a tree

Heidi Hinder discusses her craft + technology residency at Watershed in Bristol, UK on Humans Invent: The project focused on creating new ways of exchanging payment via physical gestures in an attempt to make technology a more interactive experience. It also served to promote physical contact with other humans in an age when the digital is replacing the tangible. Hinder explains, “I was interested in trying to bring people closer together through technology and how that might be possible given that people are often quite isolated and absorbed by it, so I used technology as a mediation to bring back human to human interaction.” Using RFID tags and readers, Hinder created four different physical gestures that could act as payment including hugging. In this scenario the customer and server wear an RFID tag and reader respectively on their tops and money is exchanged when these come into contact – the easiest way for this to happen is by hugging. Every Wednesday is Wearable Wednesday here at Adafruit! We’re bringing you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here on Wearable Wednesday!

Felt Ghostbusters set by Etsy user JezebelRose: It’s a Trap and a Pack! This is a Ghostbusters Trap and Proton Pack Plushy set that is modeled from the first Ghostbusters movie. They are both soft and squishy but will also hold their forms quite well. The backpack straps on the pack are adjustable to fit a range of sizes and a strap is present on both plushies so they can easily be hung on the wall for decoration when not in use.

Incredible induction-powered LED engagement ring milled from titanium by Ben Kokes aka “Project Longhaul,” beautiful story! Every Wednesday is Wearable Wednesday here at Adafruit! We’re bringing you the blinkiest, most fashionable, innovative, and useful wearables from around the web and in our own original projects featuring our wearable Arduino-compatible platform, FLORA. Be sure to post up your wearables projects in the forums or send us a link and you might be featured here on Wearable Wednesday!

A smoke detector is part of a sophisticated alarm system. Which within the system is a professional, most will include Section detector gas, room filling ions. Or sensitive to radio signals. However, this circuit does not have to be so complicated. Just another 2 LDRs and LED detection. Only the number of IC LM1801, the circuit helps the device is much less. Designed for this purpose. It consists, in Section controlled by the Zener voltage. Second output reference voltage output, the compare unit. And Transistor output resistance current 500 mA with diode clamp. This circuit does not require a transformer. Can be connected directly to the home. So there are diode – D1 rectifier as ACV, R2 serves to reduce the voltage at IC1 properly. Capacitor C2 filters the power was smooth. By a Zener diode in the circuit to control the voltage constant. The principle of this circuit Is [...]

Ministry of Supply high-tech office apparel: “Rolling Up Their Sleeves, as a Team” @ NYTimes.com: As a 14-year-old Boy Scout who went on backpacking trips in western Massachusetts, Gihan Amarasiriwardena couldn’t find a fleece jacket that would protect him from the wind. His solution was to make his own wind-blocking coat from scratch, using plastic garbage bags, spray-on adhesive and fleece. Enlarge This Image Bryce Vickmark for The New York Times Samples of bicycle-friendly apparel from Ministry of Supply. The company uses an aerospace design process to trace how the body’s skin moves. Six years later, while riding his bike around the campus of the Massachusetts Institute of Technology as an engineering student, he realized he needed a dress shirt that could withstand the rigors of bicycle commuting. This time, he teamed up with a classmate and set out to make that missing item in the clothing market. But they weren’t the only ones at M.I.T. to identify such a problem. Two students at its Sloan School of Management soon got together to develop their own version of work-appropriate clothing made with practical fabrics. One was Kit Hickey, a former investment banker who had been frustrated that her Brooks Brothers suits were so stiff compared with her rock-climbing togs. The other was Aman Advani, now 28, who in his previous life as a management consultant had begun cutting the tubes from his dress socks and stitching them to the feet of his sports socks to build better footwear for his rigorous travel schedule. The two groups, potential competitors, met each other at M.I.T.’s entrepreneur center in 2011. But instead of seeing each other as rivals, they decided to work together. “We were like, ‘Oh my God, this is crazy.’ I can’t believe we found each other,” Ms. Hickey, 28, says of the meeting. “It was promising to know that there might actually be a market for this,” adds Mr. Amarasiriwardena, 24. By this time, he and his classmate Kevin Rustagi had started Ministry of Supply, a clothing business based in Boston that specializes in high-tech office apparel. Soon after the meeting, Ms. Hickey and Mr. Advani joined the company.

Ceramic baked goods as pendants by studio TADAM via designboom