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Catarina-Mota-at-TED“We may not yet have the flying car that science fiction promised us,” says Catarina Mota in today’s talk, given at TEDGlobal 2012. “But we can have walls that change color depending on temperature, keyboards that roll up, and windows that become opaque at the flick of a switch.”

[ted_talkteaser id=1692]As Mota demonstrates, smart materials will allow us to make some very cool things. But not a lot of information is currently out there about how these materials are made, how they work, and how they can be used. This is why Mota co-created OpenMaterials.org, a website for the sharing of experiments, information, tutorials and DIY projects involving smart materials.

“Innovation has always been fueled by tinkerers,” says Mota. “So many times, amateurs — not experts — have been the inventors and improvers of things like mountain bikes, personal computers, airplanes.”

To hear some examples of how makers…

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bella,就这样的在梦中走了,不敢相信,好不舍得,一遍一遍听着‘花火’,原来没有仔细听过,然而越听越难过,没有哪首歌能这样唱出你的心声。在我们心里,你是短暂的花朵,也是最长久的琥珀。

沒深夜痛哭過
又怎麼會有資格
談論命運生活

寧可壯烈地閃爍
不要平淡的沉默
別問這是為何

因為我曾和惡魔 鬥過幾回合
就算它極端恐嚇 不握手言和
因為曾去日無多 才懂我想成為的我

捧著心面對火
害怕卻不退縮
所有置我於死地的
也激發我膽魄

狠下心蹚過火
重生在縫補過的軀殼
當得起每個失而復得
憑著我夠執著

我是短暫的花朵
也是最長久的琥珀
總有美好要借我寄託

深愛的都難以割捨
特別當媽媽說你要好好的
永遠是讓她驕傲的女兒

所以我曾和惡魔 鬥過幾回合
就算它極端恐嚇 不握手言和
所以當去日無多 會是我該成為的我

捧著心面對火
害怕卻不退縮
所有置我於死地的
也激發我膽魄

狠下心蹚過火
重生在縫補過的軀殼
當得起每個失而復得
憑著我夠執著

為了心揚起火
願意豁出命去搏
能令我死而無憾的
才讓我真快樂

我的心就是火
燃燒在每一首我唱的歌
聽到的人為我證明了
這世界我來過

娜娜,一路走好,谢谢你,把你的自信,执着,勇气留下来,让它们成为我的心火,永远。

都市生态化

昆明现城市开心农场 绿化带里”见缝插针” 不止是在昆明,现在在城市中一些人会愿意在空旷的地方去种一些东西,在小区的空地上开阔出一片地,也许尽管这些人大部分只是为了爱好,但就是有这么一群人会对这个感兴趣的。我身边的例子就是我爸学校的很多老师会周末开车跑到郊区的空地上种点东西,雷打不动的去。我舅舅在北京5环租个小仓库就想在旁边的地上种点吃的。我表姐生孩子,外婆在乡下种的不打农药的菜专门给她怀孕,做月子。在武汉的一个小区,开发商就让用户来租用一些空地来种菜,提倡新的生活方式,还邀请了英国大使领馆及总领事馆文化教育处“绿色生活行动”来分享全球领先的绿色生活方式。城市越来越大,不是地越来越大,而是人越来越多,空间越来越小,能有一块小地去种,那在城市就会看作成少数人才有的权利。城市不仅要便捷,娱乐也要有生态,也就这两年,都市生态化就是一个潮流,从主流的大城市开始向周围扩散, 世界最大都市纽约 即将变身为大型城市农场?,这就是一个未来的趋势,生态的目的是为了自给自足,也是为了让城市的环境变得更环保,绿色。上海也有这样的城市示范性农场,也出现了憨熊小区:城市订制农场的创业公司,主打向社区供应定制的新鲜蔬菜。

MIT media lab一直是指引未来科技的指南针,它里面的farm lab就是预示这将是一个非常大的领域。2014年,wired, fastcompany,economist这些科技志向的杂志都报道了它,那预示着后面1,2年间这个领域就会有大动作。

http://live.fastcompany.com/Event/InnovationByDesign2014AQAWithCalebHarper
http://www.wired.co.uk/magazine/archive/2014/10/features/server-farm
http://www.economist.com/blogs/babbage/2014/04/indoor-farms?fsrc=scn/tw/te/bl/ed/lightworkcitydining

在4到5年前,推这种绿色生态概念不好使,人们对健康的概念还很模糊,健康只是中老年人关注的事,即使在一两年前推这些也会受到质疑,但是也许2014就是一个转折点,为什么空气清新器突然之间卖得好了,不只是小米的价格便宜了,而是2014年的雾霾和往年不大一样。以往雾霾只是集中在淮河以北区域,但是刚过去的2014年,雾霾大举南下,南方的江浙,中部地区都遭到了空气污染,也预示着这会变成常态。在中国,大多数人得生活环境,不仅小,而且坏。

年轻人会不会是一个消费群体,与年轻人一起成长就写了年轻人的消费群体的特点,对个性时尚,新事物新知识会大胆追求,消费是为了追求品质,愿意参照意见领袖的消费模式等等。

现在的80后到90后是以后消费群体,这些人得的特点是,追求快节奏的生活,但是不希望降低生活品质,原来的生活品质,就吃来说,原来讲求吃饱,后来要讲吃好,现在是吃健康,(没有地沟油)。怎么来说,生活品质从原来的吃饱穿暖慢慢一步一步提升到现在的理念,那就是健康,当我们的健康意识都提高的时候,我们发现我们生活的环境却在不断的恶化。我吃的不健康,喝得不健康,甚至到了呼的空气也开始普遍不健康了。不管你有钱没钱,你生活在那样污染的城市里,就是要被动的遭这样的罪,毕竟环境保护是一连串,长期的事,再过5年,10年,环境会恶化不知道,能改善都还是个未知数,那意味着这批80后,90后,在他们当父母的时候,他们的孩子也要被迫在这样的环境生活下去,而有谁愿意自己的后代享受不是蓝蓝的天,清新的空气,干净的水。远水不解近渴,在环境未得到根本改善之前,个人能够做些什么?现在我们能想到的,只是我们能够去买个面罩,空气净化器,水净化器,这就相当于我们每个人无论走到哪里都要戴上一个防‘毒’面具。这些方式虽然能保护,但都是被动的,治标不治本,你会不会希望有个地方,你不用去担心这些,那就到乡下吧,不过大多数城市人又没有时间出去到自然享受。我们要去倡导什么的生活方式,不是让大家出门带个面罩然后再办公室家里开空气清新器吧,而是用你自己的手把你的周围环境能变得更干净,自然。

上次小魔女说我们不够接地气,确实是因为她知道年轻人追求快,简单,而不是慢有质量的生活,但是后来她说,在我们身上看到了一种不一样的气质,一种清新的感觉,我想那就是品牌的一个标签,清新风,田园风。我们之所以这样,其实也是因为我们在这里过日子,我们知道这里不仅一切都很干净自然,而且这里的生活方式也清新朴素。我们不用跟着大众去接国内的地气,我们有理由,有条件,以我们在西方更好的生活方式来告诉那些年轻人我们该要去追求些什么,我们自己作为这个群体代表,潮流的指引者,当宇平的文章girlup发出来,有她得学弟看到,还有更多陌生的同龄人也看到,这实际上突出的媒体效应就是去打造一个新的意见领袖,特别是美女做先锋。

虽然这个市场还没有,但年轻人愿意去接受新事物,想要更好地生活品质都是我们可以去引导的点,在产品本身是同样的,但附上我们要凸显的价值观价值观(健康绿色理念)就变得高大上,品牌给普通人指引了方向和远景。用户一想到 ‘我想要自己健康绿色的生活空间’,就能联想联想到那种未来健康生活的场景,或许就是一种城市的田园牧歌。不管我们的产品怎么变,这个品牌的目的就是能够创造绿色的生活空间,在这个基础上建立绿色的生活品质,每个城市人不用跑到乡下,才能过这样自然简朴的生活。

我们说要给用户引导一种未来的生活方式,这就是我们要追求的目标-创造以及引领未来绿色的/自然地生活方式,不管是迎造绿色空间,呼吸着自然这些植物制造新鲜空气,甚至在家庭内品尝着自己的蔬菜,这都是未来低碳,环保的生活方式,让绿色播种在我们身边,就是我们要达成的目的。

毫无疑问,任何新的事物,新生得概念,都是由少数人开始的,通过他们传播种子再到多数人,怎么去专注于产品本身,以及怎么去把健康的生活理念描绘出来是第一的,怎么去得到第一个认可,得到第一个称赞是放首位的,我们作为创始人,必然是去创造这种理念,引导这种理念,传播这种理念的人。

別把人生的順序搞反了..
不是因為有了希望才堅持,
而是因為堅持才有了希望!
不是因為有了機會才爭取,
而是因為爭取了才有機會!
不是因為成長了才去承擔,
而是因為承擔了才會成長!
不是因為擁有了才付出,
而是因為付出了才擁有!

不是因為突破了才挑戰,
而是因為挑戰了才突破!
不是你有了條件才能夠成功,
而是你想成功才創造了條件!
不是因為有了錢才去學習,
而是因為學習了才有錢!
不是因為有了收穫才去感恩,
而是因為去感恩了才有收穫!

RTL2832U SDR tryout

Just got a Realtek RTL2832U and R820T based RTL-SDR dongle from Collin to play with, it is cheap approximate 20 pounds, hackers are probably using it to receive the AM,FM or RF signals from the ships and airplanes. Having seen many SDR things from Hackaday, but it is my first time to play with SDR.

To transform the USB dongle into a SDR, a driver is needed to be installed, the src of driver could be found https://github.com/steve-m/librtlsdr, still you need to compile and install the driver.

My first attempt is on my Mac Air. Just happen to find a compiled version for the OSX from the berkeley signal processing course, which rtl_sdr, rtl_tcp, rtl_test and the corresponding libraries are included. However, trying the testing command rtl_test -t failed to open the rtlsdr device for some reason.


Found 1 device(s):
0: Generic RTL2832U (e.g. hama nano)
Using device 0: Generic RTL2832U (e.g. hama nano)
Failed to open rtlsdr device #0.

Could not fix the problem at the moment, could be admin privilege issue ?? anyway, continue to try it out in my ubuntu 14.04 desktop.

1. compiling and installing the driver again from https://github.com/steve-m/librtlsdr, ( make sure libusb1.0 is installed in prior, using command : apt-get install libusb-1.0-0-dev ).

rtl_test -t

found the similar problem like MAC computer’s that it failed to open the device along with a message.

Using device 0: Generic RTL2832U (e.g. hama nano)
Failed to open rtlsdr device #0.
Kernel driver is active, or device is claimed by second instance of librtlsdr

the simple fix is to use sudo modprobe -r dvb_usb_rtl28xxu
The result from the test is


Found 1 device(s):
0: Generic, RTL2832U, SN: 77771111153705700
Using device 0: Generic RTL2832U
Found Rafael Micro R820T tuner
Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6
Sampling at 2048000 S/s.
No E4000 tuner found, aborting.

which lists the chipset, tuner and gain values.

A permanent fix on this issue to avoid input the command times and times again is to configure as below

$ cd /etc/modprobe.d/
$ nano ban-rtl.conf

add the line
blacklist dvb_usb_rtl28xxu
save the conf and restart the linux.

Further more, tried to test FM signals using this command

rtl_fm -f 96.3e6 -M wbfm -s 200000 -r 48000 - | aplay -r 48k -f S16_LE
then you can hear the FM signal noises,
so basically it means the driver is working, so the dougle is working, and finally we can get the RF signals.

so to manipulate the signals, http://gnuradio.org/ is needed to be installed, a simple way is to install a compiled version through
$ apt-get install gnuradio

and then you would like to have a user interface application to work with, https://github.com/csete/gqrx is seemingly the best one, which requires QT, gnuradio and driver to be installed in prior. When trying to compile and install qqrx from the src, a problem occurred that Project ERROR: Package gnuradio-analog not found. I have no idea why gnuradio-analog components is not found or not in the compiled version. Anyway, I removed the compiled gnuradio and tried to compile and install the lastest gnuradio from the source code – http://gnuradio.org/redmine/news/44. Specific guide could be found here , http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall.

The compiling and installation process usually takes a hour long. Tried to install gqrx again, but another issue found : Project ERROR: Package gnuradio-osmosdr not found. No idea why some packages are still missing after the complete installation of gnuradio.

However, luckily found a online compiled version.
To install “gqrx” we need to add a “ppa” (Personal Package Archive) to our system. To do this we simply issue the following commands:
$ sudo add-apt-repository ppa:gqrx/releases
$ sudo apt-get update sudo
$ apt-get install gqrx

so at last gqrx is installed

gqrx has the following features:

  • Discover devices attached to the computer.
  • Process I/Q data from the supported devices.
  • Change frequency, gain and apply various corrections (frequency, I/Q balance). AM, SSB, FM-N and FM-W (mono and stereo) demodulators.
  • Special FM mode for NOAA APT.
  • Variable band pass filter.
  • AGC, squelch and noise blankers.
  • FFT plot and waterfall.
  • Record and playback audio to / from WAV file.
  • Spectrum analyzer mode where all signal processing is disabled

so right now I got the things running by typing the gqrx in the ubuntu applications.
unnamed
So let me see what I can do more about it.

Earl Bellinger

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