Re: [OT] iPad query...

[Kevin Hawkins <yahoogroupskh@xxxxxxxxxxxxxx>]

I haven't been following this thread but it seems if you include a DC
jack allowing direct voltage application to the USB lines that it
potentially could damage a lot of kit if the wrong voltage (PSU) was
used ... or is there some protection somewhere ?

K

On 16/03/2011 19:40, Neil Wrightson wrote:
> Hi Dave,
>
> A small comment.
> I find star pattern devices like your model take up to much room on
the
> desk. The box is small but when leads are plugged in it turns into an
> octopus 200..300mm in diameter.
> I feel it's better to have all leads out the back and maybe just a
power led
> on the front.
>
>
> Regards,
>
> Neil Wrightson.
>
>
>
>    _____
>
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
> Dave McLaughlin
> Sent: Wednesday, 16 March 2011 10:28 PM
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] [OT] iPad query...
>
>
>
>
> Hi Phil and all,
>
> I have now added the 2.5mm jack to the PCB design. See here.
>
> http://www.axoninstruments.biz/download/iPadDualAdaptor.jpg
>
> I have arrange it so that if you have a USB power adaptor connected
and you
> plug in the external power supply via the jack plug it disconnects the
USB
> supply to avoid them shorting out and the need for diodes.
>
> There is a 3D PDF you can download and rotate around here. Just open
with
> Adobe Reader and click on the image to enable the 3D mode.
>
> http://www.axoninstruments.biz/download/iPadUSBAssembly2.pdf
>
>
> Dave...
> ---
> Very funny Scotty, now beam down my clothes!!!
> ---
>
> From: ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>
> [mailto:ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>
 ] On Behalf
> Of
> Phil Harris
> Sent: 16 March 2011 07:32
> To: ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>
> Subject: Re: [ukha_d] [OT] iPad query...
>
>
> Definitely up for that - happy to paypal you some funds to contribute
to
> costs too of course...
>
> Have a few USB hub PSUs flapping around - might be worth popping on a
DC
> jack as well (or instead) into the design so the iPad psu can be kept
for
> other use?
>
> Phil
>
> Sent from another bloody fruit-based portable device...
>
> On 15 Mar 2011, at 16:21, "Dave
McLaughlin"<dave_mclaughlin@xxxxxxx
> <mailto:dave_mclaughlin%40nerdshack.com>
> <mailto:dave_mclaughlin%40nerdshack.com>
 >  wrote:
>
>> Hi Phil,
>>
>> I have a PCB to get made up in about a week or so's time when the
design
> is
>> completed. I could add a couple of these to the order seeing as
they would
>> be cheap enough. I'll then build you one and send it to you (PCB
with
>> connectors only, no enclosure). If it works, then I can consider
making a
>> few up if there is enough interest. There is no reason it
shouldn't work
> as
>> the connection is simple. There is also the possibility of fitting
a
>> standard power input connector for a wall wart type power supply
with 5V
> at
>> 2A, to allow your idea of a cheaper solution. Ideal for the office
etc.
>>
>> Let me know what you think?
>>
>> Dave...
>> ---
>> Very funny Scotty, now beam down my clothes!!!
>> ---
>>
>>
>>
>> From: ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>
> <mailto:ukha_d%40yahoogroups.com>
> [mailto:ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>
> <mailto:ukha_d%40yahoogroups.com>
 ] On Behalf
> Of
>> Phil Harris
>> Sent: 15 March 2011 21:52
>> To: ukha_d@xxxxxxx<mailto:ukha_d%40yahoogroups.com>
> <mailto:ukha_d%40yahoogroups.com>
>> Subject: Re: [ukha_d] [OT] iPad query...
>>
>>
>> Never got chance to try it at my end but yes - I was happy to have
an
>> external PSU connected ... Of course I guess any 5v 2a (or
greater) supply
>> would be usable and much cheaper?
>>
>> Would still lime to get a few of these made up so I can sync and
charge A
>> few devices at a time.
>>
>> Phil
>>
>>
>>
>>
>> [Non-text portions of this message have been removed]
>>
>>
>>
>> ------------------------------------
>>
>>
>> Yahoo! Groups Links
>>
>>
>>
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