Broadcast Engineer at BellMedia, Computer history buff, compulsive deprecated, disparate hardware hoarder, R/C, robots, arduino, RF, and everything in between.
2640 stories
·
3 followers

Time Travel Tuesday #timetravel a look back at the Adafruit, maker, science, technology and engineering world

1 Share

Timetravel1 600x319

Experience is not what happens to you; it’s what you do with what happens to you. – Aldous Huxley


1884 – The first purpose-built roller coaster, LaMarcus Adna Thompson’s “Switchback Railway“, opens in New York’s Coney Island amusement park.

NewImage

The original Switchback Railway at Coney Island was the first roller coaster designed as an amusement ride in America. It was designed by LaMarcus Adna Thompson in 1881 and constructed in 1884. It appears Thompson based his design, at least in part, on the Mauch Chunk Switchback Railway which was a coal-mining train that had started carrying passengers as a thrill ride in 1827.

For five cents, riders would climb a tower to board the large bench-like car and were pushed off to coast 600 ft (183 m) down the track to another tower. The car went just over 6 mph (9.7 km/h). At the top of the other tower the vehicle was switched to a return track or “switched back” (hence the name).

Read more.


1902 – Barbara McClintock, American geneticist and academic, Nobel Prize laureate is born.

NewImage

Barbara McClintock, was an American scientist and cytogeneticist who was awarded the 1983 Nobel Prize in Physiology or Medicine. McClintock received her PhD in botany from Cornell University in 1927. There she started her career as the leader in the development of maize cytogenetics, the focus of her research for the rest of her life. From the late 1920s, McClintock studied chromosomes and how they change during reproduction in maize. She developed the technique for visualizing maize chromosomes and used microscopic analysis to demonstrate many fundamental genetic ideas. One of those ideas was the notion of genetic recombination by crossing-over during meiosis—a mechanism by which chromosomes exchange information. She produced the first genetic map for maize, linking regions of the chromosome to physical traits. She demonstrated the role of the telomere and centromere, regions of the chromosome that are important in the conservation of genetic information. She was recognized among the best in the field, awarded prestigious fellowships, and elected a member of the National Academy of Sciences in 1944.

During the 1940s and 1950s, McClintock discovered transposition and used it to demonstrate that genes are responsible for turning physical characteristics on and off. She developed theories to explain the suppression and expression of genetic information from one generation of maize plants to the next. Due to skepticism of her research and its implications, she stopped publishing her data in 1953.

Later, she made an extensive study of the cytogenetics and ethnobotany of maize races from South America. McClintock’s research became well understood in the 1960s and 1970s, as other scientists confirmed the mechanisms of genetic change and genetic regulation that she had demonstrated in her maize research in the 1940s and 1950s. Awards and recognition for her contributions to the field followed, including the Nobel Prize in Physiology or Medicine, awarded to her in 1983 for the discovery of genetic transposition; she is the only woman to receive an unshared Nobel Prize in that category.

Read more.


1904 – Irish author James Joyce begins a relationship with Nora Barnacle and subsequently uses the date to set the actions for his novel Ulysses; this date is now traditionally called “Bloomsday“.

NewImage

Bloomsday is a commemoration and celebration of the life of Irish writer James Joyce during which the events of his novel Ulysses (which is set on 16 June 1904) are relived. It is observed annually on 16 June in Dublin and elsewhere. Joyce chose the date as it was the date of his first outing with his wife-to-be, Nora Barnacle; they walked to the Dublin suburb of Ringsend. The name is derived from Leopold Bloom, the protagonist of Ulysses.

Read more.


1911 – IBM founded as the Computing-Tabulating-Recording Company in Endicott, New York.

NewImage

The International Business Machines Corporation (commonly referred to as IBM) is an American multinational technology and consulting corporation, with headquarters in Armonk, New York. IBM manufactures and markets computer hardware and software, and offers infrastructure, hosting and consulting services in areas ranging from mainframe computers to nanotechnology.

The company originated in 1911 as the Computing-Tabulating-Recording Company (CTR) through a merger of the Tabulating Machine Company, the International Time Recording Company, and the Computing Scale Company. CTR was changed to “International Business Machines” in 1924, using a name which had originated with CTR’s Canadian subsidiary. The initialism IBM followed. Securities analysts nicknamed the company Big Blue for its size and common use of the color in products, packaging, and logo.

Read more.


1963 – Soviet Space Program: Vostok 6 Mission – Cosmonaut Valentina Tereshkova becomes the first woman in space.

NewImage

Valentina Vladimirovna Tereshkova is the first woman to have flown in space, having been selected from more than four hundred applicants and five finalists to pilot Vostok 6 on 16 June 1963. In order to join the Cosmonaut Corps, Tereshkova was only honorarily inducted into the Soviet Air Force and thus she also became the first civilian to fly in space.

Before her recruitment as a cosmonaut, Tereshkova was a textile-factory assembly worker and an amateur skydiver. After the dissolution of the first group of female cosmonauts in 1969, she became a prominent member of the Communist Party of the Soviet Union, holding various political offices. She remained politically active following the collapse of the Soviet Union and is still regarded as a hero in post-Soviet Russia.

In 2013 she offered to go on a one-way trip to Mars if the opportunity arose. At the opening ceremony of the 2014 Winter Olympics, she was a carrier of the Olympic flag.

Read more.


1977 – Oracle Corporation is incorporated in Redwood Shores, California, as Software Development Laboratories (SDL) by Larry Ellison, Bob Miner and Ed Oates.

NewImage

The Oracle Corporation is a multinational computer technology corporation headquartered in Redwood City, California, United States. The company specializes in developing and marketing computer hardware systems and enterprise software products – particularly its own brands of database management systems. In 2011 Oracle was the second-largest software maker by revenue, after Microsoft.

The company also builds tools for database development and systems of middle-tier software, enterprise resource planning (ERP) software, customer relationship management (CRM) software and supply chain management (SCM) software.

Read more.

Read the whole story
tekvax
11 days ago
reply
Burlington, Ontario
Share this story
Delete

XRobots – 3D Printed Star Wars R6 Droid Part 14

1 Share

XRobots – 3D Printed Star Wars R6 Droid Part 14

James Bruton shared on YouTube:

Sorting out the final mechanics and electronics for my 3D printed Star Wars R6 droid 2-3-2 leg conversion


649-1
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

Read the whole story
tekvax
11 days ago
reply
Burlington, Ontario
Share this story
Delete

Mobile Headless Raspberry Pi WiFi Setup #piday #raspberrypi @Raspberry_Pi

1 Share

NewImage

From instructables user aldoz:

So you successfully confiured your RaspberryPi in a fully headless fashion, maybe with WiFi too, and you are very happy using it at home in your robotic projects…

But when you go outside, at work or on any foreign network, once powered and connected to some ethernet cable you do always… get it lost on the net :-(, you have no way to know the ip address. Everything works fine at home, where you have access to the router admin, but when you connect it to the ethernet at work or in other complex enterprise nets there is no way to connect to the RPI.

You will find some ready made solutions for the same ip-address problem, from blinking it on the power led to write it on some usb memory after startup, etc, just google for them if you like.

I will suggest here some ways to get connected to your Raspberry with just the help of your smartphone.

What you will need for this instructable is:

  • the already configured RPI
  • a “managed” ethernet/wi-fi router, ie one you can access to get leased ip-addresses
  • internet access to get/update software and search a solution for ongoing problems

Full tutorial


998Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!

Read the whole story
tekvax
11 days ago
reply
Burlington, Ontario
Share this story
Delete

Wireless Intrusion Detection System #piday #raspberrypi @Raspberry_Pi

1 Share

Wireless intrusion detection system via irongeek

This talk covers a distributed Wireless Intrusion Detection System using multiple Raspberry Pi boards. While there are more polished solutions on there, this solution works as a good proof of concept, or in house solution for small to medium businesses. This talk covers why scanning is needed, cost comparisons, a quick overview of setting up the Raspberry Pi, and the problems I’ve seen and had to adjust for since the original Proof of Concept. With luck and time permitting, we’ll have a small version set up in the room, and we can show how the system works in real time.

Bio: Chris Jenks is a graduate from Eastern Michigan University; he has a Bachelor of Science in Information Assurance. He works full time doing security audits, firewall design, network consulting, and troubleshooting. His previous talks include Linux hardening, and Open Source Intelligence. His Raspberry Pi WIDs was published in the Linux Journal in December 2014, and the talk is related to the article.

Read more

998Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!

Read the whole story
tekvax
11 days ago
reply
Burlington, Ontario
Share this story
Delete

An elegant, stacking, Real Time Clock for Raspberry Pi @Raspberry_Pi #pida #raspberrypi

1 Share

FAILQV1I9WYT7D6 MEDIUM

Great tutorial via Balzy on instructables:

If you want to build a good Real Time Clock for your Raspberry here’s the tutorial you were looking for!

This is a revised and simplified version for Instructables made out of this article at my personal blog. Difference is mainly in the structure and my article is a bit more verbose.

Why another “annoying” how to on building a Real Time Clock for the RPi?

Because almost everywhere you find instructions telling you to build the circuit on a breadboard and simply wire it with a couple of loose wires.

This is a full Stacking Shield you can elegantly install on top the RPi leaving the GPIO entirely exposed for other devices. And you can build it for no more than 8$, instead of buying one for double the price.

Read more.

Read the whole story
tekvax
11 days ago
reply
Burlington, Ontario
Share this story
Delete

Hacking A Wireless AC Power Outlet

1 Share

It’s always nice to see hackers pick up stuff headed for the landfill and put it back in action with a quick repair and upgrade. [Septillion] found a wireless remote controlled AC outlet in the junk bin and decided to do just that. A nice spin-off of such hacks is that we end up learning a lot about how things work.

His initial tests showed that the AC outlet and its remote could be revived, so he set about exploring its guts. These remote AC outlets consist of an encoder chip on the remote and a corresponding decoder chip on the outlet, working at 433MHz.  Since the various brands in use have a slightly different logic, it needed some rework to make them compatible. The transmit remote was a quick fix – changing the DIP switch selected address bits from being pulled low to high and swapping the On and Off buttons to make it compatible with the other outlets.

Working on the AC outlet requires far more care and safety. The 230V AC is dropped down using a series capacitor, so the circuit is “hot” to touch. Working on it when it is powered up requires extreme caution. A quick fix would have been to make the changes to the address bits and the On/Off buttons to reflect the changes already made in the remote transmitter. Instead, he breadboarded a small circuit around the PIC12F629 microcontroller to take care of the data and address control. Besides, he wanted to be able to manually switch the AC outlet. The relay control from the decoder was routed via the microcontroller. This allowed either the decoder or the local manual switch from controlling the relay. Adding the PIC also allowed him to program in a few additional modes of operation, including one which doubled the number of outlets he could switch with one remote.


Filed under: repair hacks
Read the whole story
tekvax
11 days ago
reply
Burlington, Ontario
Share this story
Delete
Next Page of Stories