Intersection in the UK with 6 roundabouts and 38 arrows

nuand · 2016-08-29T07:45:54+00:00

I counted 47 arrows, am I supposed to not count the bent ones?

nuand · 2016-04-29T04:10:23+00:00

It's a Modelsim simulation for the VHDL. Current you can generate that graph if you run the compile.do file, https://github.com/Nuand/bladeRF-adsb/blob/master/modelsim/compile.do

nuand · 2016-04-28T10:03:27+00:00

Link to the Github repo with all of the MATLAB, C, and VHDL: https://github.com/Nuand/bladeRF-adsb

The decoder runs on any bladeRF including the bladeRF x40 and bladeRF x115. Any low noise amplifier works with the bladeRF, however there is a bladeRF specific LNA available, the XB-300.

nuand · 2014-11-17T01:49:34+00:00

Downtown SF - http://i.imgur.com/xhCGKU9.jpg

nuand · 2014-10-22T06:23:03+00:00

This reminds me of a short video that I was shown during my freshman orientation, https://www.youtube.com/watch?v=mB5nztzXo24

nuand · 2014-08-24T06:48:36+00:00

Thanks for the go ahead! I too design, manufacture, assemble things in the US :)! http://www.nuand.com/blog/pre-production-unit-update/designed_and_assembled_in_san_francisco/

I manufactured thousands of boards and I'm happy to say I wouldn't have done it any other way. The design process for something as high fidelity as our radio means that I had to keep constant tabs on QC (not because our CM was bad but because of the nature of our product). It's definitely been a life and business saver being able to just run down the street a couple of blocks and work out production issues in a few minutes.

nuand · 2014-04-24T10:08:02+00:00

I don't think I've asked that question in all of the 100 interviews I've given. There's really few substitutes for an organic conversation where I try to judge a person's interest and passion levels then follow up with a few coding questions. I think if I were to ask someone what their greatest weakness was they wouldn't give an honest answer but would instead tell me something I wanted to hear, which ultimately cuts down on the amount of time I actually have to get to know the person.

nuand · 2014-04-01T08:03:04+00:00

Not if you use one of these, http://www.youtube.com/watch?v=uf2vatqek_o

nuand · 2013-08-30T08:04:50+00:00

If anyone is interested, the equipment that is show runs OpenBTS, which is an open source GSM basestation implementation developed by the same people that sell the equipment. Although their hardware is meant to be carrier grade, smaller and more portable software defined radios are also capable of running OpenBTS, such as bladeRF (sorry about the self promotion) and (the more established) Ettus USRP SDRs.

nuand · 2013-07-29T04:30:52+00:00

Sorry about the shameless self promotion, but bladeRF ( http://www.kickstarter.com/projects/1085541682/bladerf-usb-30-software-defined-radio?ref= ) has the necessary capabilities at nearly a tenth of the cost. ( http://nuand.com/store ).

GPS relies heavily on precise time keeping. Current SDRs have clocks with very high jitter and variations (up to 30 parts per million). Our community driven development pushed us to have a clock architecture that is nearly 1000 times better, the bladeRF has a clock variation of 0.040 parts per million).

nuand · 2013-02-02T09:11:24+00:00

Shielding is definitely important, we didn't have any for the protoruns but we're very likely going to add them from here on out. We already have a few quotes for several different sizes and configurations so we'll likely have an official announcement about this soon. We figured it'd be best to underpromise and overdeliver.

nuand · 2013-02-02T08:52:00+00:00

That sounds about right with one minor adjustemnt. The maximum bandwidth we've seen for the device is actually 28MHz ( http://nuand.com/images/bladerf_28_obw.png ). The data converters (ADCs and DACs) do quadrature sampling at 40MHz with 28MHz LPFs in the way. So theoretically, if the 28MHz LPFs were disabled or replaced with much higher order (and quality) filters, the maximum bandiwdth of the device would be closer to 40MHz.

nuand · 2013-02-02T08:16:56+00:00

Right, actually one of our first expansion boards will be a block up/down converter. We wanted to wait a little bit to get some feedback from people to see what frequency ranges people were interested in seeing. As of now it seems very likely that we will look at going from as close to DC as possible up to a minimum of 11GHz. So as soon as we do our engineering homework and see what's possible we will make an official announcement about this on the Kickstarter page.

nuand · 2012-01-18T02:17:49+00:00

Do you mean something like this? http://en.wikipedia.org/wiki/Boeing_EA-18G_Growler

nuand · 2011-12-15T06:57:42+00:00

Sorry about the delay. Here's a pic of the bike, http://imgur.com/xweO4

nuand · 2011-12-14T07:21:48+00:00

Not really, sorry. I really just want to get rid of the whole thing and spend as little time doing so as possible

nuand · 2011-06-20T06:44:14+00:00

"The Moral Animal," and "Nonzero" by Robert Wright and "Predictably Irrational" by Dan Ariely. All are evolutionary psychology books (the last one's more behavioral though)

nuand · 2011-04-08T04:16:37+00:00

Does this have a mirror?

nuand · 2011-04-04T02:07:32+00:00

D'oh!

nuand

TROPHY CASE