USB 2 USB Question
tinkering with a DLP-TXRX RS-232 to USB module with hopes of
converting a product from RS-232 to USB. The problem is if I want to
connect 2 DLP-TXRX's to each other I would need a USB "crossover"
cable (I think). Is there such a thing?
This thingie has a mini-B USB connector on it and since I don't know
much about how USB actually works, I have no idea if these things can
be connected to each other and if so, how.
Here's the data sheet for those who might ne interested.
It's trivial to do that with RS232 but not at all trivial with USB. One
device or the other must be a host in USB, or you need a hub and host
between the two slaves.
Why abandon RS232? Converting to USB might be necessary if your devices
need to talk with a computer; RS232 ports are all but gone from laptops
already. But if your devices don't need to talk with a machine and need
to talk to each other, I think I'd stay with RS232. Tom
> > ... I want to connect 2 DLP-TXRX's to each other...
>It's trivial to do that with RS232...
I was afraid of that.
>Why abandon RS232? Converting to USB might be necessary if your devices
>need to talk with a computer; RS232 ports are all but gone from laptops
>already. But if your devices don't need to talk with a machine and need
>to talk to each other, I think I'd stay with RS232.
This product dumps data to assorted devices - sometimes a PC;
sometimes not. It currently uses RS-232 to do the comm. I agree with
you completely. I have no desire to dump RS-232. But I'm getting
requests to support USB for device to PC communications and although
I think that it's trivial to put a decent USB to RS-232 converter on
a laptop, others don't agree.
Thanks for the info. (I get to can the USB project -yeah!)
Paul "I've seen the future, and you're not going to like it."
-- Vincent van Gui
simultaneous RS232 and USB on a project: http://www.lvr.com/boardusb.htm Tom