Digest for sci.electronics.repair@googlegroups.com - 3 updates in 2 topics

sms <scharf.steven@geemail.com>: Jan 01 03:27PM -0800

On 1/1/2019 7:45 AM, Jolly Roger wrote:
 
<snip>
 
> OBD Fusion is rated 4.7 out of 5 by 4820 people on the iOS App Store.
 
Don't you love the footnote on their web site: "Generic ELM327 Bluetooth
adapters are not compatible with OBD Fusion for iOS. This is a
limitiation of iOS, not OBD Fusion."
 
But it does look like a good app. Glad to see that 4820 users have rated
it, and that it got such a high rating. OTOH, Torque Pro has a 4.5
rating, and 55,575 ratings and more than a million downloads. Could be
because OBD Fusion is more than 2x the price. $5 seems to be the price
point where people will not think about the cost of an app.
 
Still wondering why iOS doesn't allow the Bluetooth Serial Port Profile
(SPP). SPP is used by a huge number of industrial devices which can't
have apps on iOS which is a shame.
nospam <nospam@nospam.invalid>: Jan 01 06:40PM -0500

In article <q0gt0c$ltj$1@dont-email.me>, sms
 
> Still wondering why iOS doesn't allow the Bluetooth Serial Port Profile
> (SPP).
 
because spp is obsolete.
 
bluetooth 4/le is *much* easier to use, both for users and developers,
as well as being faster and more reliable.
 
> SPP is used by a huge number of industrial devices which can't
> have apps on iOS which is a shame.
 
actually, very few.
 
and if those manufacturers updated their hardware to bluetooth le, they
likely wouldn't need to write an app since bluetooth le has numerous
standard characteristics that are *already* natively supported by ios.
 
as i said, spp is obsolete.
Jeff Liebermann <jeffl@cruzio.com>: Jan 01 02:44PM -0800

On Mon, 31 Dec 2018 14:04:09 -0000 (UTC), arlen holder
 
>Update:
>The *82*96-1-408-123-4567 is working well, so far.
>I'll report back of the *96 starts blurbling.
 
Very good. The benefits of using a low bandwidth iLBC 15Kbits/sec
codec is somewhat negatated by the higher latency (delay) as compared
with G.711 (64Kbits/sec uncompressed). It takes time to compress the
audio, so watch out for echo problems.
 
>If so, I think I'll change phones to whatever Jeff may recommend that is
>available in a local Santa Cruz or San Jose Costco.
 
No recommendation. Most everything I've tried in DECT 6.0 works. Mine
is an AT&T something that I bought at a thrift shop. Just make sure
your prospective phone supports DSC (DECT Standard Cipher) encryption:
"Demonstration Listening to DECT 6.0 Cordless Phone Call with a HackRF
SDR"
<https://www.youtube.com/watch?v=-EUvw-mPO1M>
I'm told that the Panasonic cordless phones are all encrypted but
therefore have higher latency.
 
I'm out of action for a while thanks to yet another kidney stone. Y're
on your own on this one.
 
 
--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
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