Today's Message Index:
----------------------
1. 04:09 AM - Re: Panel mounted USB power ports for Apple devices? (James Kilford)
2. 05:35 AM - Re: Panel mounted USB power ports for Apple devices? (Harley)
3. 07:33 AM - Re: Panel mounted USB power ports for Apple devices? (Robert L. Nuckolls, III)
4. 08:08 AM - Re: icom A210 upgrade (Ken)
5. 08:14 AM - Re: Panel mounted USB power ports for Apple devices? (Ken)
6. 08:49 AM - Re: Panel mounted USB power ports for Apple devices? (Dj Merrill)
7. 09:00 AM - Re: icom A210 upgrade (Ken)
8. 09:12 AM - Re: icom A210 upgrade (Robert L. Nuckolls, III)
9. 12:30 PM - Re: icom A210 upgrade (Ken)
10. 12:36 PM - Re: icom A210 upgrade (Robert L. Nuckolls, III)
11. 02:04 PM - Re: Panel mounted USB power ports for Apple devices? (Richard Lyon)
12. 02:57 PM - Re: Panel mounted USB power ports for Apple devices? (H. Marvin Haught)
Message 1
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Subject: | Re: Panel mounted USB power ports for Apple devices? |
Ralph,
Could you find a suitable automotive version, and simply take it out of the
cigar lighter package and hard wire into the plane? I think that's what I
would do. It gives you a chance to try all sorts of low-cost items and
then pick a couple of the right ones.
For the presentation at the instrument panel, I would go for a USB
extension cable for ease of mounting. This can then plug into your power
supply.
FWIW.
James
On 1 August 2014 16:17, Ralph Finch <ralphmariafinch@gmail.com> wrote:
> Can anybody recommend panel-mounted USB ports to supply power for Apple
> devices (iPhone/iPad)? I'm not sure if the Apple devices require some
> special signaling circuitry of the USB port to accept power.
>
> I could use a cigarette lighter receptacle and then a plug-in adapter, but
> I prefer to plug directly into a USB port to charge.
>
> Thanks,
> Ralph Finch
> Davis, CA USA
>
> RV-9A
>
> *
>
>
> *
>
>
Message 2
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Subject: | Re: Panel mounted USB power ports for Apple devices? |
Message 3
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Subject: | Re: Panel mounted USB power ports for Apple devices? |
At 06:07 AM 8/4/2014, you wrote:
>Ralph,
>
>Could you find a suitable automotive version,
>and simply take it out of the cigar lighter
>package and hard wire into the plane? I think
>that's what I would do. It gives you a chance
>to try all sorts of low-cost items and then pick a couple of the right ones.
>
>For the presentation at the instrument panel, I
>would go for a USB extension cable for ease of
>mounting. This can then plug into your power supply.
>
>FWIW.
>
>James
There are hundreds of options. The greatest risk for
most options are (1) expenditure of $time$ to integrate
the device into the airplane (2) performance to requirements
and (3) radiated and conducted EMC.
The technology is mature . . . 2 and 3 are relatively
low value risks. But one can spend a lot of hammer-n-tongs
effort making a 'clean' and robust installation. Condider
products tailored to the task like these
http://tinyurl.com/m8kfz6h
http://tinyurl.com/qhdwgdl
This would be a good value at 3x the price due to
it's ease of installation. No sheet metal work
what so ever except to cut usb connector clearance
holes.
Bob . . .
Message 4
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Subject: | Re: icom A210 upgrade |
On 03/08/2014 12:29 PM, Robert L. Nuckolls, III wrote:
> At 11:47 AM 8/2/2014, you wrote:
>>
>> Icom and their vendors state that the A210 com radio is a slide in
>> replacement for the A200 as long as you are not using the built in
>> intercom. However the A210 also outputs rs232 data on pin 1 of the
>> card edge connector and that pin is grounded to make the panel light
>> work on the A200. I can spend a lot of time trying to disconnect that
>> pin and hope nothing else gets interfered with in the tight space
>> behind my panel but I've been trying to determine if leaving that pin
>> grounded will actually harm the data output circuitry on the A210? I'm
>> not likely to ever use the data output but if someone knows that there
>> is little risk of leaving it grounded, I'd sure appreciate hearing
>> about it.
>
>
> It appears that Pin 1 on the A200 was
> ground for the panel lighting.
>
> The A210 Service Manual says the RS232
> input/output is managed by an Analog Devices
> ADM202. In the data sheet for this part
> we find the statement:
>
> Emacs!
>
> It appears that nothing untoward will
> happen if you don't unground pin 1.
>
>
> Bob . . .
>
Many thanks Bob. Your post gave me the hint I needed to sleuth out the
rest of the story.
The standard card edge connector on my radio is different from the
schematic and board diagrams in the service manual that I have (with Feb
2008 addendum).
The data sheet for the ADM202 does indeed show continuous short circuit
as an absolute maximum condition but it also says "Exposure to
absolute maximum rating conditions for extended periods may
affect device reliability."
The icom manual shows a 1K resistor in series with the rs232 line out if
you fit the optional Dsub back panel to the radio. It shows no
connection to pin 2 for the standard card edge back panel but it does
show a 100R resistor to the separate data out jack. I was able to
confirm that my radio in fact has a 1K resistor in series with pin 2. So
I can interchange the A200 and A210 without modifying the aircraft tray
and without any worries since I'm not using the intercom function.
thanks again
Ken
Message 5
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Subject: | Re: Panel mounted USB power ports for Apple devices? |
One of the OSH aviation vendors had a two usb port black plastic jack
that looked like a drop in replacement for a cigarette lighter panel
hole. I don't have any other details other than it had a flip up plastic
cover and I believe it was intended to be wired directly to 12 volt power.
Ken
On 04/08/2014 10:32 AM, Robert L. Nuckolls, III wrote:
> <nuckolls.bob@aeroelectric.com>
>
> At 06:07 AM 8/4/2014, you wrote:
>> Ralph,
>>
>> Could you find a suitable automotive version, and simply take it out
>> of the cigar lighter package and hard wire into the plane? I think
>> that's what I would do. It gives you a chance to try all sorts of
>> low-cost items and then pick a couple of the right ones.
>>
>> For the presentation at the instrument panel, I would go for a USB
>> extension cable for ease of mounting. This can then plug into your
>> power supply.
>>
>> FWIW.
>>
>> James
>
> There are hundreds of options. The greatest risk for
> most options are (1) expenditure of $time$ to integrate
> the device into the airplane (2) performance to requirements
> and (3) radiated and conducted EMC.
>
> The technology is mature . . . 2 and 3 are relatively
> low value risks. But one can spend a lot of hammer-n-tongs
> effort making a 'clean' and robust installation. Condider
> products tailored to the task like these
>
> http://tinyurl.com/m8kfz6h
>
> http://tinyurl.com/qhdwgdl
>
> This would be a good value at 3x the price due to
> it's ease of installation. No sheet metal work
> what so ever except to cut usb connector clearance
> holes.
>
>
> Bob . . .
>
>
Message 6
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Subject: | Re: Panel mounted USB power ports for Apple devices? |
On 8/4/2014 10:32 AM, Robert L. Nuckolls, III wrote:
>
> The technology is mature . . . 2 and 3 are relatively
> low value risks. But one can spend a lot of hammer-n-tongs
> effort making a 'clean' and robust installation. Condider
> products tailored to the task like these
>
> http://tinyurl.com/m8kfz6h
>
FYI, I installed this very unit in my aircraft, only to find out that it
does not have the proper resistors installed for the iPad to charge (I
note now that the listing has a reference "can't be used for iphone"
which was not there when I bought mine).
I ended up hacking the end of the iPad's USB cable to add the resistors
(actually I added a micro-sized potentiometer adjusted to the proper
resistance), which is now dedicated to the airplane, and it charges the
ipad just fine.
Not difficult, but not as "clean" an installation as I had originally
envisioned.
-Dj
--
Dj Merrill - N1JOV - VP EAA Chapter 87
Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Glastar Flyer N866RH - http://deej.net/glastar/
Message 7
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Subject: | Re: icom A210 upgrade |
repost with pin number 1 correction in last comment
(pin 2 ref. is corrected to pin 1)
On 04/08/2014 11:07 AM, Ken wrote:
>
> On 03/08/2014 12:29 PM, Robert L. Nuckolls, III wrote:
>> At 11:47 AM 8/2/2014, you wrote:
>>>
>>> Icom and their vendors state that the A210 com radio is a slide in
>>> replacement for the A200 as long as you are not using the built in
>>> intercom. However the A210 also outputs rs232 data on pin 1 of the
>>> card edge connector and that pin is grounded to make the panel light
>>> work on the A200. I can spend a lot of time trying to disconnect that
>>> pin and hope nothing else gets interfered with in the tight space
>>> behind my panel but I've been trying to determine if leaving that pin
>>> grounded will actually harm the data output circuitry on the A210? I'm
>>> not likely to ever use the data output but if someone knows that there
>>> is little risk of leaving it grounded, I'd sure appreciate hearing
>>> about it.
>>
>>
>> It appears that Pin 1 on the A200 was
>> ground for the panel lighting.
>>
>> The A210 Service Manual says the RS232
>> input/output is managed by an Analog Devices
>> ADM202. In the data sheet for this part
>> we find the statement:
>>
>> Emacs!
>>
>> It appears that nothing untoward will
>> happen if you don't unground pin 1.
>>
>>
>> Bob . . .
>>
> Many thanks Bob. Your post gave me the hint I needed to sleuth out the
> rest of the story.
>
> The standard card edge connector on my radio is different from the
> schematic and board diagrams in the service manual that I have (with Feb
> 2008 addendum).
>
> The data sheet for the ADM202 does indeed show continuous short circuit
> as an absolute maximum condition but it also says "Exposure to
> absolute maximum rating conditions for extended periods may
> affect device reliability."
>
> The icom manual shows a 1K resistor in series with the rs232 line out if
> you fit the optional Dsub back panel to the radio. It shows no
> connection to pin 1 for the standard card edge back panel but it does
> show a 100R resistor to the separate data out jack. I was able to
> confirm that my radio in fact has a 1K resistor in series with pin 1. So
> I can interchange the A200 and A210 without modifying the aircraft tray
> and without any worries since I'm not using the intercom function.
>
> thanks again
> Ken
>
>
Message 8
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Subject: | Re: icom A210 upgrade |
>Many thanks Bob. Your post gave me the hint I needed to sleuth out
>the rest of the story.
>
>The standard card edge connector on my radio is different from the
>schematic and board diagrams in the service manual that I have (with
>Feb 2008 addendum).
>
>The data sheet for the ADM202 does indeed show continuous short
>circuit as an absolute maximum condition but it also says "Exposure to
>absolute maximum rating conditions for extended periods may
>affect device reliability."
Yes, but reliability only for that function which
takes a specialized GPS based mapping/data base
product . . . does anyone offer such a thing?
Not sure I'd want any 'automatic' gizmo twisting
my radio knobs anyhow.
>The icom manual shows a 1K resistor in series with the rs232 line
>out if you fit the optional Dsub back panel to the radio. It shows
>no connection to pin 2 for the standard card edge back panel but it
>does show a 100R resistor to the separate data out jack. I was able
>to confirm that my radio in fact has a 1K resistor in series with
>pin 2. So I can interchange the A200 and A210 without modifying the
>aircraft tray and without any worries since I'm not using the
>intercom function.
Didn't see how the intercom function came into
consideration . . . are those two pins not limited
to panel lighting in the A200?
Bob . . .
Message 9
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Subject: | Re: icom A210 upgrade |
On 04/08/2014 12:11 PM, Robert L. Nuckolls, III wrote:
> <nuckolls.bob@aeroelectric.com>
>
>
>> Many thanks Bob. Your post gave me the hint I needed to sleuth out the
>> rest of the story.
>>
>> The standard card edge connector on my radio is different from the
>> schematic and board diagrams in the service manual that I have (with
>> Feb 2008 addendum).
>>
>> The data sheet for the ADM202 does indeed show continuous short
>> circuit as an absolute maximum condition but it also says "Exposure to
>> absolute maximum rating conditions for extended periods may
>> affect device reliability."
>
> Yes, but reliability only for that function which
> takes a specialized GPS based mapping/data base
> product . . . does anyone offer such a thing?
> Not sure I'd want any 'automatic' gizmo twisting
> my radio knobs anyhow.
>
>> The icom manual shows a 1K resistor in series with the rs232 line out
>> if you fit the optional Dsub back panel to the radio. It shows no
>> connection to pin 1 for the standard card edge back panel but it does
>> show a 100R resistor to the separate data out jack. I was able to
>> confirm that my radio in fact has a 1K resistor in series with pin 1.
>> So I can interchange the A200 and A210 without modifying the aircraft
>> tray and without any worries since I'm not using the intercom function.
>
> Didn't see how the intercom function came into
> consideration . . . are those two pins not limited
> to panel lighting in the A200?
>
>
> Bob . . .
>
I don't expect to use the GPS data base either (nor do I know if it is
available) but strange things happen and I did not want to give icom any
excuses to void the warranty.
There is actually a warning on the icom site about changes in the
intercom and GPS connections on the A210. The vendor and icom both
mentioned intercom connection changes. I just didn't want steer anyone
wrong with my conclusion since some folks probably are using the
intercom function.
Ken
Message 10
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Subject: | Re: icom A210 upgrade |
>
>I don't expect to use the GPS data base either (nor do I know if it
>is available) but strange things happen and I did not want to give
>icom any excuses to void the warranty.
>
>There is actually a warning on the icom site about changes in the
>intercom and GPS connections on the A210. The vendor and icom both
>mentioned intercom connection changes. I just didn't want steer
>anyone wrong with my conclusion since some folks probably are using
>the intercom function.
Understand.
Bob . . .
Message 11
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Subject: | Re: Panel mounted USB power ports for Apple devices? |
These are worth a look:
http://commitlift.com/
The supplier is an excellent source of information.
Richard Lyon
On 4 August 2014 16:49, Dj Merrill <deej@deej.net> wrote:
>
>
> On 8/4/2014 10:32 AM, Robert L. Nuckolls, III wrote:
>
>>
>> The technology is mature . . . 2 and 3 are relatively
>> low value risks. But one can spend a lot of hammer-n-tongs
>> effort making a 'clean' and robust installation. Condider
>> products tailored to the task like these
>>
>> http://tinyurl.com/m8kfz6h
>>
>>
> FYI, I installed this very unit in my aircraft, only to find out that it
> does not have the proper resistors installed for the iPad to charge (I note
> now that the listing has a reference "can't be used for iphone" which was
> not there when I bought mine).
>
> I ended up hacking the end of the iPad's USB cable to add the resistors
> (actually I added a micro-sized potentiometer adjusted to the proper
> resistance), which is now dedicated to the airplane, and it charges the
> ipad just fine.
>
> Not difficult, but not as "clean" an installation as I had originally
> envisioned.
>
> -Dj
>
> --
> Dj Merrill - N1JOV - VP EAA Chapter 87
> Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
> Glastar Flyer N866RH - http://deej.net/glastar/
>
>
Message 12
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Subject: | Re: Panel mounted USB power ports for Apple devices? |
Just what I was looking for....Thanks for the reference.
M. Haught
On Aug 4, 2014, at 4:01 PM, Richard Lyon wrote:
> These are worth a look:
>
> http://commitlift.com/
>
> The supplier is an excellent source of information.
>
> Richard Lyon
>
>
> On 4 August 2014 16:49, Dj Merrill <deej@deej.net> wrote:
>
>
> On 8/4/2014 10:32 AM, Robert L. Nuckolls, III wrote:
>
> The technology is mature . . . 2 and 3 are relatively
> low value risks. But one can spend a lot of hammer-n-tongs
> effort making a 'clean' and robust installation. Condider
> products tailored to the task like these
>
> http://tinyurl.com/m8kfz6h
>
>
> FYI, I installed this very unit in my aircraft, only to find out that
it does not have the proper resistors installed for the iPad to charge
(I note now that the listing has a reference "can't be used for iphone"
which was not there when I bought mine).
>
> I ended up hacking the end of the iPad's USB cable to add the
resistors (actually I added a micro-sized potentiometer adjusted to the
proper resistance), which is now dedicated to the airplane, and it
charges the ipad just fine.
>
> Not difficult, but not as "clean" an installation as I had originally
envisioned.
>
> -Dj
>
> --
> Dj Merrill - N1JOV - VP EAA Chapter 87
> Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
> Glastar Flyer N866RH - http://deej.net/glastar/
>
>
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