The amazing iOS 5 API and iPhone 4S hardware nobody talks about

51–52 of 52 posts

Re: The amazing iOS 5 API and iPhone 4S hardware nobody talks about

#51

Post by samlittlewood » Wed, Dec 14, 2011, 6:11 PM UTC

sudont wrote: post #12

jws wrote: post #2

Bluetooth 4.0 LE - Non-paired communication in the 10s of meters range. Very low power. 250kbps or so max speed. It could be useful for easily interacting with devices, e.g. thermostats, exercise monitors, televisions, cars… There don't appear to be (m)any devices using it now. But it is in the phone, waiting.

Indeed. CSR has a nice-sounding SoC for this, but their dev program sucks for hackers. $10k for a seat? Blegh. TI is a bit more friendly in this regard, see video in below link. I'm interested to see if anyone could potentially implement a lightweight data format for send/receive to create an open system for communicating from app-to-mote. Right now, any iPhone receiver app on the store wouldn't be allowed to downloa…

That is good - $99 for an evaluation kit from TI. I used the CC2500 part a while ago for a hobby project with good results. Hmm - just using this to make a matchbox size robot would be feasible.

Also, interesting to see the chipcon parts carrying on with the 8051 CPU cores.

Re: The amazing iOS 5 API and iPhone 4S hardware nobody talks about

#52

Post by gcb » Fri, Dec 16, 2011, 7:43 AM UTC

lukifer wrote: post #36

trotsky wrote: post #31

Earlier quoted context omitted.

If you had non paired audio anyone walking by could hijack your audio stream

First, as security breaches go, that's pretty minor. Someone could also shit on my front doorstep too, but somehow it doesn't happen that often. Second, there are better ways to link devices than pairing; for instance, hit a button on the receiver to see the closest device by signal strength, while also remembering all previous devices. Or, a UI for booting out the device ID of an accidental linkage or ne'er-do-well.…

if you're talking on the train, people know what you say, the other side is still pretty private.

with open radio, anyone on the train could be saving a hi-fi copy of the entire conversation.

in your analogy, he would have to be pushing a recorder between your ear and phone. very different from sitting in your door steps.

but i agree, the current system is crappy. I never bother to use bluetooth. but removing pairing instead of fixing is dumb.

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