[arm-allstar] Market for pre-soldered usb fobs????

[AD2DX]

I used to run a surface mount pick and place machine back in the 90's. When doing repairs, I used dental picks and a microscope with a heat gun that had a narrow nozzle for removing SM chips. I would recommend dental picks, and a USB microscope. McMaster-Carr has SM solder paste, but Digikey and Newark Electronics probably has it as well. I used a small glue syringe to apply the solder paste to the pads, and soldered under a microscope.
Hope that helps.
Thanks,

73
Joe Lauricella - AD2DX
AD2DX at AD2DX dot US
(Sent from my iPhone)

> On Aug 10, 2015, at 13:32, David McGough <kb4fxc at inttek.net> wrote:
>
>
> Hi again,
>
> I've gotten some personal e-mails with questions, so, I thought I'd
> few more comments, as food for thought.
>
> For hams wanting to develop proficiency in surface mount work, one method
> is using old garbage PC computer (or any other) surface-mount boards as a
> place to "practice." ....So, you gain some proficiency without risk of
> destroying new hardware, fobs, etc.
>
> 73, David KB4FXC
>
>
>
>> On Mon, 10 Aug 2015, David McGough wrote:
>>
>>
>> Hi Everyone,
>>
>> I hear varying comments from hams about not being able to solder the COS
>> and PTT signal wires to the CM108 chips in the low-cost fobs.
>>
>> Personally, I find the soldering easy to do, it's mostly about technique
>> used and having a good quality soldering station--but, I've also done
>> -lots- of surface mount assembly work in a previous life.
>>
>> It's worth noting that once you've built a perhaps three fobs from $3
>> adapters, you've saved enough money over purchasing pre-built URI's, etc.,
>> to buy a quality temperature-controlled soldering station (I use a Weller
>> WESD51).
>>
>> So, I'll ask the question: is there a market for pre-soldered fobs? I'm
>> not talking a completed interface, just the COS and PTT wires attached,
>> like seen in this photo:
>>
>> http://hamvoip.org/photos/P1040026.JPG
>>
>> BTW, I'm NOT trying to get into business! But, just wondering....
>>
>>
>> 73, David KB4FXC
>>
>>
>>> On Mon, 10 Aug 2015, Pierre Martel wrote:
>>>
>>> Thanks for the info.
>>>
>>> He already destroyed 4 fob and the New one he got are all blob  not the
>>> chips.
>>>
>>> Too bad it wont work with i/o
>>
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>>
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>
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