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Clem Martins's Blog

23 posts
clem57

The SSD 960 Evo

Posted by clem57 Top Member Jan 23, 2017

     Samsung is the leader in SSD technology offering two brands at the moment. The "PRO" brand is geared toward the power hunger users where performance requires the extra umph in their work and the "EVO" brand for the mainstream value oriented folks like me. A close second is Intel which are always in the hunt in this category. Today I would like to look at Samsung who introduces the 960 series of NVMe SSD. They are only available in M.2 2280 form factor and not as PCIe card. The PRO uses the older UBX controller with 3 ARM processors whereas the EVO has the Polaris controller with 5 ARM processors. Not bad for a mainstream side. Very little is known of this controller, but the specs at http://www.hardwarezone.com.sg/review-samsung-ssd-960-evo-pcie-ssd-mainstream-champion?utm_source=hardwarezone_sg&utm_me… are very close to the PRO. The only thing is the PRO offers a full 512 MB storage compared to only 500 MB storage on the EVO. Tel me what you think. Are any one here using these or other M.2 cards?

 

Clem

clem57

A Wanna Be

Posted by clem57 Top Member Jan 9, 2017

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clem57

Changing passwords often

Posted by clem57 Top Member Nov 30, 2016

     I used to work at a bank (leaving name out for now) where we had to change the password every month. Not only that, we could not reuse the same password twice in a year. I had over 100 systems to change. Needless to say, I worked out a convenient yet obscure way to generate my passwords in 8 characters or numbers. After a time the routine was not bad and made secure knowing I had done good. BTW, never use your name or birthday. So go and do it.

 

Clem

     A new board from Intel that compares to a Cortex M0 except it runs X86 instructions. Features include low power running at 32Mhz. Included sensors are six axis accelerometer, magnetometer with a temperature sensor and USB 2.0. This can be powered by either a coin slotted battery or normal 5v input micro input.  For more information refer to Intel on the cheap: Chip maker ships $15 IoT developer board | Computerworld . Intel seems to finally understand the marketplace for SBC like Raspberry Pi and similar other MCU's.

Clem

 

Courtesy of Intel

    

clem57

Atmel no more?

Posted by clem57 Top Member May 26, 2016

With the recent announcement of Microchip acquiring Atmel, I was wondering what will happen? I read this http://makezine.com/2016/01/25/why-im-excited-that-microchip-is-buying-atmel/  which leads me to think good things. But who know where the portfolio of Atmel end up. Time will tell.

I found this article/blog and thought it bizarre. I am wondering how this can be true.

Read this part first: https://wp.josh.com/2014/03/03/the-mystery-of-the-zombie-ram/

Then think a while before going to the next page.

 

Clem

clem57

Unboxing NXP K82F

Posted by clem57 Top Member Apr 13, 2016

Unboxing NXP K82F

 

     I was lucky enough to receive NXP's Freedom development board, the K82F in the mail the other day. Like some of the previous boards in the series, this one is well done with some interesting features. Here are some of the more salient points:

  • Form-factor compatible with the Arduino R3 pin layout

  • OpenSDAv2.1, the NXP open source hardware embedded serial and debug adapter running an open source bootloader, offers options for serial communication, flash programming, and run-control debugging

  • Peripherals enable rapid prototyping, including a six-axis digital accelerometer and magnetometer to create full eCompass capabilities, a tri-colored LED and two user push-buttons for direct interaction, 2x32Mb QuadSPI external flash, FlexIO camera header, touch pads and headers for use with Bluetooth® and 2.4 GHz radio add-on modules

  • FlexIO header compatible with OV7670 camera

  • FXOS8700CQ - accelerometer and magnetometer

  • Kinetis  MK82FN256VLL15MK82FN256VLL15 MCU(ARM ® Cortex®-M4 @150 MHz, 256KB SRAM, USB, advanced security)

 

I could go on from here, but check out K8X Freedom Development Platform|NXP for more including an excellent jump start instructions.

                              20160413_101650.jpg

     In the box, there are three items. First the board itself in a static bag with a warning about electrostatic discharges. I would be careful to be discharged by touching ground first. Next is the USB to micro cable. This one has a thick and heavy wire, unlike those on cheaper made knock offs. Lastly in the box are a quick start guide with nice pictures showing the board's sections. Pay attention to the USB micro adapters. The one in the middle is an OTG user cable while the one outside is for power and debugging (OpenSDAv2).  You will find the reset switch near by around the corner.

                              20160413_101812.jpg20160413_102158.jpg

 

     Next I plugged the USB into my PC. Next the micro end was plugged into the micro closest to the corner. Within seconds the green power button flashes on. Already loaded into memory is a "bubble level" demo utilizing the on-board accelerometer. On a level surface the light is off. by tilting the board length wise toward or away from cable turns the user LED to green. Otherwise tilt on side or the other side up turns user LED blue. Play with this and enjoy the fun.

 

 

Thanks for reading,

Clem

clem57

CloudFlare: Use or Snub?

Posted by clem57 Top Member Apr 4, 2016

I found this in Wikipedia:

CloudFlare was ranked in the 7th rank among the top 50 Bad Hosts by Host Exploit.[31] The service has been used by Rescator, a website that sells payment card data.[32][33][34]

Two of ISIS' top three online chat forums are guarded by CloudFlare but U.S. law enforcement has not asked them to discontinue the service.[35]

An October 2015 report found that CloudFlare provisioned 40% of SSL certificates used by phishing sites with deceptive domain names resembling those of banks and payment processors.[36]

On November 2015, Anonymous

discouraged the use of CloudFlare's services, following the ISIS attacks in Paris

and renewed accusation of providing help to terrorists.[37]

CloudFlare responded by calling their accusers "15-year-old kids in Guy Fawkes masks" and saying that they consult "actual anti-terrorism experts" and that they "abide by the law

 

 

Although they may be good to some people, the facts above leads me to think that  money is the ONLY motive for their business model? Feel free to comment.

 

Clem

clem57

Projects using Pi 3

Posted by clem57 Top Member Mar 10, 2016

First usage of Pi 3

 

I installed the Piaware software to feed ADS-B into FlightAware. At first I had problem with Dongle in use:

 

Found 1 device(s):

0: Generic RTL2832U

  Using device 0: Generic RTL2832U

  Kernel driver is active, or device is claimed by second instance of librtlsdr.
In the first case, please either detach or blacklist the kernel module
(dvb_usb_rtl28xxu), or enable automatic detaching at compile time.

  usb_claim_interface error -6
Failed to open rtlsdr device #0.

 

Luckily a solution is pretty straightforward. In /etc/modprobe.d create a file called blacklist.conf with the following:

 

blacklist dvb_usb_rtl28xxu
blacklist rtl2832
blacklist rtl2830

 

Apparently the upgrade incorporates a new Linux kernel which includes a DVB driver for the dongle as a TV receiver.  Since the device is already in use by this driver, usage fails by anything else. Next:

 

sudo reboot

 

Problem gone. Software works great on Pi 3.

 

Cheers,

Clem

At last, I purchased my first $5 computer. I am so happy, I had to show a picture here.

 

20160303_050312.jpg

Clem

Andy's project the enchanted cottage even made it on the Arduino site since he used the Yun MCU.

https://blog.arduino.cc/2015/08/07/a-traditional-weather-house/  which is a nice link from Home page.

Congratulations again,

C

     While browsing away at the internet, my eye caught this Vintage Electronics Magazines Predicted Our Current Future | Hackaday. Being a bit a a nostalgia buff,  I read with interest and noticed a picture with a lady wear a eye piece. WOW. So is the future rooted in the past?

comment on other things like this.

Thanks,

Clem

clem57

Answer

Posted by clem57 Top Member Jun 24, 2015
clem57

Udoo Neo

Posted by clem57 Top Member May 18, 2015

Normally I do not like to blog about Kick-starters, but I am going to make an exception here because of the interest by many in this topic.

Drum Roll please!

 

 

 

Announcing a evolution in SBC computers: UDOO Neo ...

 

 

https://www.kickstarter.com/projects/udoo/udoo-neo-raspberry-pi-arduino-wi-fi-bt-40-sensors

Please feel free to comment with up finger or down finger. But only with reason why.

 

Details:

 

 

UDOO Neo offers a new paradigm in the single board computer landscape: from homogeneous to heterogeneous processor. UDOO Neo embeds two cores on the same processor: a powerful 1GHz ARM Cortex-A9 and an exceptional 166MHz Cortex-M4 I/O real-time co-processor on the same chip, the Freescale i.MX 6SoloX.

 

Cheers,

Clem

clem57

AI

Posted by clem57 Top Member May 16, 2015

My brain today

Artificial intelligence (AI) is the intelligence exhibited by machines or software. It is an academic field of study which studies the goal of creating intelligence. Major AI researchers and textbooks define this field as "the study and design of intelligent agents", where an intelligent agent is a system that perceives its environment and takes actions that maximize its chances of success. John McCarthy, who coined the term in 1955, defines it as "the science and engineering of making intelligent machines".
AI research is highly technical and specialized, and is deeply divided into subfields that often fail to communicate with each other. Some of the division is due to social and cultural factors: subfields have grown up around particular institutions and the work of individual researchers. AI research is also divided by several technical issues. Some subfields focus on the solution of specific problems. Others focus on one of several possible approaches or on the use of a particular tool or towards the accomplishment of particular applications.
The central problems (or goals) of AI research include reasoning, knowledge, planning, learning, natural language processing (communication), perception and the ability to move and manipulate objects. General intelligence is still among the field's long-term goals. Currently popular approaches include statistical methods,computational intelligence and traditional symbolic AI. There are a large number of tools used in AI, including versions of search and mathematical optimization,logic, methods based on probability and economics, and many others. The AI field is interdisciplinary, in which a number of sciences and professions converge, including computer science, mathematics, psychology, linguistics, philosophy and neuroscience, as well as other specialized fields such as artificial psychology.
The field was founded on the claim that a central property of humans, intelligence—the sapience of Homo sapiens—"can be so precisely described that a machine can be made to simulate it." This raises philosophical issues about the nature of the mind and the ethics of creating artificial beings endowed with human-like intelligence, issues which have been addressed by myth, fiction and philosophy since antiquity. Artificial intelligence has been the subject of tremendous optimism but has also suffered stunning setbacks. Today it has become an essential part of the technology industry, providing the heavy lifting for many of the most challenging problems in computer science.


From the internet!