You can also get it from Universal-solder in Canada:
ebay:
https://www.ebay.com/itm/Real-Time-Clock-DS3231SN-for-Arduino-32kB-EEPROM-I2C-Battery-Backup/263183091193
C $4.92 Approximately US $3.49
Or from the web site:
__
>> From: time-nuts on behalf of Bill
>> Notfaded
>> Sent: April 25, 2020 5:38 PM
>> To: Discussion of precise time and frequency measurement <
>> time-nuts@lists.febo.com>
>> Subject: Re: [time-nuts] Vaperware Parts and pulse stretching circuits
Discussion of precise time and frequency measurement <
> time-nuts@lists.febo.com>
> Subject: Re: [time-nuts] Vaperware Parts and pulse stretching circuits
>
> I totally agree with the Metcal soldering station!!! I'll never go back to
> anything else. I don't even use a scope.
Hi
Metcal’s are great soldering setups. They also are *expensive* soldering
setups.
I mumble and grumble each time I do a re-stock on tips. I know of several
plants
that tooled up on Metcal’s and then switched to something else after a few
years.
The issue was never performance. It always
On 4/25/2020 6:06 PM, Bryan _ wrote:
They make quite a few models which one are you recommending?
For soldering, use the Metcal STTC-090 tip
($27.78 from Mouser SKU 745-STTC-090)
0.25mm tip diameter, perfect for 25 mil pitch
BE SURE TO GET THE WS1 AUTO-SLEEP WORKSTAND
TO SAVE THE TIP!
y measurement <
> time-nuts@lists.febo.com>
> Subject: Re: [time-nuts] Vaperware Parts and pulse stretching circuits
>
> I totally agree with the Metcal soldering station!!! I'll never go back to
> anything else. I don't even use a scope. I bought some magnifying glasses
>
They make quite a few models which one are you recommending?
-=Bryan=-
From: time-nuts on behalf of Bill Notfaded
Sent: April 25, 2020 5:38 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Vaperware Parts and pulse
I totally agree with the Metcal soldering station!!! I'll never go back to
anything else. I don't even use a scope. I bought some magnifying glasses
with 5 sets of different power lenses you wear like glasses. It has built
in led light and adjustable strap that hold it on your head off Amazon.
Hi
For around $10, you likely can get a stencil with your board order. Screening
solder on the board can be set up with masking tape and a few scrap boards
as “stops”. With the solder paste already in the correct locations, there is a
lot
less need for messing around. The board can be reflowed
On Samstag, 25. April 2020 16:24:35 CEST John Moran, Scawby Design wrote:
> As a few others have pointed out on this thread, there are some simple
> methods of soldering fine-pitch devices. I use the one already mentioned
> that can be done with a clunky soldering iron, some solder-wick and a low
I know this is getting off topic, but one more comment from me.
Solder flux is really important. I use nothing but "no clean" type for
SMT work -- very thin 0.015 no-clean solder (63/37 PbSn while I still
can), and a bottle of liquid no-clean flux with a needle dispenser. I
make sure the work
John,
What you and I do for SMT type IC's is pretty much the same.
Several years ago the wife of a close friend was
in the re-work business with a home setup. What
she taught me was to first line up one of the
corner pins and tack solder it down. Then do the
opposite corner, center the
Adafruit and Sparkfun sell a remarkable number of SMT parts already on
breakout boards for moderate prices. I looked up the three parts and
found the DS3231 on a board (two different boards even), in stock and
ready to order from Adafruit (most Adafruit and Sparkfun products are
also sold through
: Saturday, April 25, 2020 05:27
To: Discussion of precise time and frequency measurement
Cc: hmur...@megapathdsl.net
Subject: Re: [time-nuts] Vaperware Parts and pulse stretching circuits
j...@scawbydesign.co.uk said:
> Just to put the record straight, I am a 72-year-old retired
> elect
When soldering parts with tight pin spacings, don't forget the trick of
clearing shorts
between adjacent pins using copper braid freshly wet with liquid flux. The
message
here is: don't panic if you create a short or even a group of shorts while
soldering.
It happens all the time and is pretty
j...@scawbydesign.co.uk said:
> Just to put the record straight, I am a 72-year-old retired electronics
> specialist who uses a 50-year-old Weller soldering iron and a magnified
> (x3.5) bench light to solder 64pin 0.5mm pitch MSP430 microprocessors by
> hand. As I said - "... not impossible to
Date: Fri, 24 Apr 2020 23:19:24 + (UTC)
Perry Sandeen said -
"I believe It is a bit disingenuous to say: *It is a small-pitch device but not
impossible to solder*.
Really?? If you've dropped $750 to $1K for a stereo microscope and other
specialized soldering equipment then you can
Hi Perry --
The circuit in the FatPPS is really simple and would be easy to duplicate.
Frankly, the reason we had to significantly increase the cost is because
we provide the board fully assembled (it's all surface mount parts), and
with the low volume we've had in the last few years, the
On Fri, Apr 24, 2020 at 7:20 PM Perry Sandeen via time-nuts <
time-nuts@lists.febo.com> wrote:
>
> But for us *Po Folks* hobbyist we have to stick with older but larger
> parts.
> Now if there was a service where you could order the part soldered to a
> breakout board with .1 inch breakout pins
Learned Gentlemen,
Several poster wrote:
TAPR offers a FatPPS kit to stretch the pulse out, and it looks likethey're
back in stock. I have one but haven't assembled it
yet.https://tapr.org/product/fatpps-pulse-stretcher/
OK no problemo. But it's $55. It's probably a great device, but does this
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