[gentoo-embedded] eyeborg

[gentoo-embedded] eyeborg

[Christopher Friedt]

It seems as though I will be doing some of the hardware design for

http://www.eyeborgblog.com

... I can't wait...

I am so creating a V4L2 kernel module for this thing... although it
would be nice if Spence could mount a microphone on himself too :)

Can anyone on the list recommend a good kit for a tunable USB radio
transceiver?

C

Re: [gentoo-embedded] eyeborg

[Peter Stuge]

Christopher Friedt wrote:
> Can anyone on the list recommend a good kit for a tunable USB radio
> transceiver?

That quite generic. What frequency range? What will you transceive?
What bitrate do you need? How cooked does your interface need to be?


//Peter

Re: [gentoo-embedded] eyeborg

[Christopher Friedt]

Hi Peter,

On Tue, Mar 17, 2009 at 12:31 AM, Peter Stuge <peter@stuge.se> wrote:
> Christopher Friedt wrote:
>> Can anyone on the list recommend a good kit for a tunable USB radio
>> transceiver?
>
> That quite generic. What frequency range? What will you transceive?
> What bitrate do you need? How cooked does your interface need to be?

It would have to be in the 1-2 GHz range - this is mainly a range
imposed by the size of the required antenna.

Most digital cmos image sensors essentially have two 'channels'. The
first is unidirectional, which carries the data away from the sensor,
and the second is bidirectional, and is often an i2c bus for control
and configuration. The i2c bus is very low-frequency, 10 kHz - 100
kHz, while the data channel is rather high (up to 60fps, with 640x480
resolution, and 24bpp, in RGB24 or YUV420p format, for example). It
might be possible to do jpeg compression at the source, if power /
space permits.

In any event, a digital signal will be modulate the transceiver
signal, with appropriate coding to ensure that the information is
received correctly - right now they're getting quite a bit of noise
using a simplistic analog camera / transmitter.

If you have any ideas about certain chips, I would love to hear them.
Size and power are of course the main concern.

Cheers,

Chris

Re: [gentoo-embedded] eyeborg

[wireless]

Christopher Friedt wrote:
> It seems as though I will be doing some of the hardware design for

> http://www.eyeborgblog.com

> ... I can't wait...


Hello Christopher,

The real pioneer is a MIT grad that is tenured in Canada:
Steve Mann

http://eyetap.org/mann/

Steve is pretty cool and I'd be surprise if he's not the genius
behind this work, even if he does not get the credit....


enjoy!

Re: [gentoo-embedded] eyeborg

[Christopher Friedt]

Hi wireless,

On Tue, Mar 17, 2009 at 5:49 PM, wireless <wireless@tampabay.rr.com> wrote:
> The real pioneer is a MIT grad that is tenured in Canada:
> Steve Mann

I'm familiar with Steve Mann, and I guess that to some he's seen as a
pioneer. One of my closest friends was offered a PhD position with
him, but turned it down after meeting him, saying that he was quite
egocentric and eccentric (as one might guess).

I would say his concept of 'sous-veillance' was quite original, from a
social perspective. However, from my perspective, he was just one of
the earlier people to do 'cool stuff' with ccd's and image sensors.

He's already 'patented the concept' of putting a camera in a
prosthetic eye too, but he has to this day never shown a device to
support the patent. I call that "patent trolling".

Cheers,

Chris