Slightly OT: Bluetooth to replace USB?
levipearson at gmail.com
Tue Apr 12 14:02:52 MDT 2011
On Tue, Apr 12, 2011 at 1:47 PM, Kimball Larsen
<kimball at kimballlarsen.com> wrote:
>>> At work we develop devices that communicate over USB with custom software, and are considering replacing the USB link with a bluetooth one. Thought I'd ask here if anyone has experience with such a transition, and could recommend a particular hardware path or approach? We need something that is cross platform, and would prefer drop-in replacement for current USB, which is handled by an on-board FTDI chip.
>> I assume that you already understand that the transfer rate for Bluetooth is much slower than USB. This may not matter to your software, but should at least be something you are aware of.
> Yup, we are aware of the speeds involved... we don't need high bandwidth at all. We just toss a few bytes back and forth at a time.
Bluetooth is a rather heavyweight protocol, and you might end up
adding a lot of cost unnecessarily. Do you need the flexibility of
Bluetooth, or would a lightweight but non-standardized RF transceiver
work for you? A lot of wireless keyboards and mice work this way,
using a tiny RF to USB dongle to link to the PC.
This part looks like a popular solution in this space:
They've got a dev kit for it that goes for a few hundred bucks, but
Sparkfun has some much simpler boards based around it for much cheaper
if you want to do a cheap prototype or experiment.
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