[757labs] Augmented Reality Storage

[Jody Franklin]

On Jan 15, 2010, at 17:36, ethan at 757.org wrote:

>> The board I have uses a FTDI FT232RL to provide serial <-> USB connection. The chip does RS232 9600 8N1 for serial.
> 
> Interesting. I'm not sure that the commercial hardwarez use RS232 for the readers, because rs232 doesn't go far. But it might be something like 422 or 485 or something. One of them is just the same data with a different voltage. The other is differential. All of them are the same signaling I think.

From what I've been able to find the + TX and RX of 422 is the same as 232 and the - 'can' just go to ground, while converters are VERY expensive. Seems the point is for using them on a bus which isn't what we'd be doing from what I can see. Hard to say though without looking at all the info.

> Dunno, the manual should have what is up. From what I gather on commercial warez the panel can setup the reader for how it wants it to go. It's different. Like a modem init string almost.
> 
> I'm just going by what I saw flipping thru the pdf dox on the older one like a week and a half ago.
> 
> I'll bring it over to the space tonite.

Not sure if I'll be there tonight or not. Trying to pin down plans, but can't get a confirm so who knows?


- Jody