Category " Misc"
23
May
Bioengineers at Stanford University have turned living cells into data storage devices that can store a rewriteable small amount data, just like silicon devices. Sections of DNA in the researchers' engineered cells can sit in one of two positions, representing the 0s and 1s of digital data. "Essentially, if the DNA section points in one direction, it's a zero. If it points the other way, it's a one,"...
Continue Reading »
Continue Reading »
20
May
http://youtu.be/TZzvVqvi764
Video by KH6WZ
This is Brian W6BY presenting some of the projects on display at Maker #7660: Not Your Grandpa's Ham Radio!
HamStack project . . . 10GHz Transverter . . . and others.
HamStack is a micro-controller "project board" with control interfaces - more information on this ham radio-specific controller platform can be found at http://www.hamstack.com
If...
Continue Reading »
Continue Reading »
23
Mar
This repair valid for APPLE MBP "MagSafe Power Adapter with "L-Type" Power Plug
This problem happens quite often, for APPLE "Mac Book Pro" users. In some cases the power supply plug is broken.
I fixed this problem myself (See pictures below). But, first some introduction how's plug looking inside:
Now time to repair.
Note: Be careful during the dissembling a plug.
Finally...
Continue Reading »
Continue Reading »
20
Mar
ST-15M 15W FM Broadcast Radio Transmitter PLL 88-108MHz with MP3 player function. Just plug into your USB flash disk , the FM Transmitter can broadcast the audio sound immediately.
* Continuous work
* the operating frequency: 88 ~ 108MHz
* Modulation: Frequency Modulation (FM)
* Max Deviation: soil 75KHz
* Working voltage: DC9V-DC13.8V
* Working current: * output impedance: 50 ohms
*...
Continue Reading »
Continue Reading »
16
Mar
Description:
Commercial Geiger counters can cost hundreds of dollars. With this Geiger Counter Kit you can build your own at a fraction of the price! This easy to solder kit can be built in an evening and it works just like you think it would; clicking and blinking in the presence of radiation. Is grandma's dish collection radioactive? Do bananas give off radiation? Are your granite table tops...
Continue Reading »
Continue Reading »
15
Mar
As Kent was riding home one night, he wondered why his bike's headlight, meant to illuminate the road ahead of him, was mounted on the handlebars. Why couldn't the light be closer to the ground? He put his engineering mind to work, and Revolights were born.
httpvh://youtu.be/-UvO3QITwkU
The Revolights bike lighting system consists of two narrow rings of LEDs that mount directly to each wheel...
Continue Reading »
Continue Reading »
15
Mar
The TakTik LunaTik compression molded band is made by hand-placing the various camo colored silicone bits in the tool. Each band is its own unique pattern. The LunaTik case is forged and CNC'd from aircraft grade aluminum, the hardware is PVD plated and the straps are made from compression molded high-grade silicone rubber with an anti-dust coating. All hardware is stainless steel.
Compatible...
Continue Reading »
Continue Reading »
13
Mar
The problem has long time existed and discussed on APPLE Forum (Since mid 2010). However APPLE not yet react on many complains from their costumers.
Problem description:
The SD card reader slot on iMac/MBP has stopped picking up the SDHC cards. When insert a card, it fails to mount. This used to work fine, and still does if a card is inserted while booting up. But after it has been ejected, it will...
Continue Reading »
Continue Reading »
12
Mar
OnlineSchools.org presents Japan One Year Later
Japan earthquakes 2011 Visualization map
httpvh://youtu.be/eKp5cA2sM28
Continue Reading »
Continue Reading »
11
Mar
The dosimeter-radiometer DO-RA (the name is derived from the first syllables of the word combination dosimeter-radiometer) contains a unique hard alpha, beta and gamma radiation sensor and can be integrated into any mobile phone (smartphone). The DO-RA is run by specially developed for this purpose software packages and a licensed operating system used by each individual mobile/smart phone. The device's...
Continue Reading »
Continue Reading »
