[Noisebridge-discuss] How hard would it be...

[Glen Jarvis]

>> I used something like ii2c (I don't remember the name exactly) to communicate serially over a line .. I think a keyboard does this.
> 
> Perhaps you're thinking of I2C?

Doh! I double counted my I's :)

> To see if I understand what your saying -- you want to make a board
> that could represent "stories" that you can move around (to being
> in-flight, in the icebox, backlog, etc.), and have a computer system
> recognize when stories move categories and automatically update a
> story-tracking application?

Exactly right. The simplest user case would be to have pivotal update the status of a story automatically when it's moved from, for example, "started" to "finished."

> Why make it so complicated and electrical? I think that I would
> approach this as a story board where each story has a QR code that can
> be scanned and located by a high-resolution camera facing opposite it.
> Then, using boundary detection, find each code and figure out its
> relative position on the board. This would almost undoubtedly mean
> hacking together some OpenCV and other libraries and tools to get
> something working.

Ironically, to me, at least, this seems like more work and more complicated than what I was thinking about. However, it is a very good idea -qr codes holding the pivotal url

> If you wanted to go at this electrically, I'd suggest taking a look at
> the 1-Wire bus. It's a lot like I2C, but made for longer distances at
> the expense of slower data rates (probably not a problem for simple,
> static IDs, I'd think).

Awesome! This data rate can crawl at a snails pace. The number of updates * the amount of data can be transmitted at the slowest modem rate imagined in history and still seem instantaneous for our needs.

My only real confusion -- even from using i2c, is that all of these stories share the same bus. How do we avoid conflicts if they happen to start to talk at the same time.

I have been thinking about this and am thinking a little push button "retransmit" button... And maybe sone LEDs showing current state -- or something similar.

Thank you for the feedback!!!



G
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