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Topics - Jason

#1
For Sale/Wanted, Suppliers / Wanted : 14x14 TQFP tray
November 20, 2017, 10:47:36 PM
The muppets at Digikey sent me tape, cut into ~10cm lengths when I ordered in tray.
I'm going to call them tomorrow but the easiest might be to just get a tray and
transfer them as it's only 100pcs. So if anyone has a spare tray, I would be most
grateful. All costs covered+.
Farnell use to sell them for a couple of quid but they're out of 14x14.
#2
RV Software / Waffle trays - feeder files
December 16, 2014, 10:16:21 PM
Does anyone have a set of feeder definitions that match the JEDEC standards listed here :
http://www.topline.tv/Tray_TSOP.html
and here:
http://www.topline.tv/Tray_QFP.html

I've just got a new project underway and I've landed myself with a number
of tray sizes and I expect over the coming months there will be more too.

If not, I'll hunt for the JEDEC data in tabular form and write a script to make
a full set of files.
#3
RV Hardware / Re-reeling joins jamming feeders
April 23, 2014, 12:48:10 AM
Not sure if anyone else has experienced the pains of
receiving partial reels with a leader affixed with a brass
joiner. Totally jammed my 10x8mm so ended up ripping
them off in disgust.
Is there any sane alternative?
#4
RV Software / Awkward imaging problem
April 23, 2014, 12:43:53 AM
I've got a part which is effectively an SO8 with a white body.
Problem is as I can't mask out the body with the threshold
like happens on a black SO8 so it measures the pin extremities
in one axis and the body extremity in the other.
I've killed loads of time trying to get the settings right by
doing a runtime debug but the only thing I can make work
is setting one of the dims tolerances to be at least 40%.
Any other ideas?
#5
General SMT / Cheap resistor reels
February 26, 2014, 11:49:35 PM
Farnell currently have a good deal on, a pack of 3 for £6.
Not sure if it's 3x15000 or 3x5000=15000

Search for "full_reel_pk3reels"

Sorry if OT, I'll delete the post if I see complaints. Didn't really think
it fitted in the for sale forum. I'll delete when the offer is over too.



#6
RV Hardware / Raising waffle trays
February 19, 2014, 08:19:45 AM
What do people use to prop trays up to the right height?
I don't have space to put the tray on the build bed so I'm
looking at putting it in a spare feeder area so it will need
a "brick" of something under it.

I assume a bit of double sided tape to keep in place?
#7
For Sale/Wanted, Suppliers / Feeders
January 23, 2014, 07:34:10 PM
In due course it would be nice to get a couple more feeders for my RV1S.
I have a "hobbyist" budget and hence willing to consider items that need refurbing.
Drop me a PM if you have anything.
#8
RV Software / SOT343R
January 05, 2014, 08:26:36 PM
SOT343R has one leg which is wider than it is long, unlike
the other three.

It is a "gull" type and the CDF editor always seems to apply
the "footprint length" attribute to whichever of the X and
Y size is the greater. This means that the bend in the gull
is always in the wrong orientation for this very wide leg.

I'm guessing I'm going to have a similar issue with other
components which have a "tab". I notice the supplied
library part for SOT89 doesn't use "gull" type, probably
for exactly the same reason.

Anyone got any work-arounds other than use a "simple"
leg type?
How will this affect the imager? Do I need to just describe
the flat part of the tab that will be in contact with the
board?
#9
RV Software / Sharing CDFs
January 05, 2014, 08:15:08 PM
Anyone up for sharing custom CDFs?

Just since the editor is so damned clunky it takes ages to
get new parts entered in and it's daft for us all to re-invent
wheels.
#10
RV Software / CDFdata.dat format
October 14, 2013, 11:36:02 PM
Some very brief notes which I'm going to use to auto export libary parts from Eagle into CDF records:

$C <NAME> <quick size x> <quick size y> <comp height> 0 <pin one location> <comp type>
<double imaging> 0 <tool number> <placement pressure> <Pick dwell> <settle time> <camera dwell>
<z-speed> <rot-speed> <XY speed> <prog rotate> <x bias> <y bias> <angle bias> <min blob size>
<pick x bias> <pick y bias> <Threshold adj>
<Pick tolerance> <min dm%> <max dm%> <pre-rotate> <centre override> <rej bin location>
<glue dot en> <glue dot size> <Lock X> <Lock y> <half index> <merge moves> <place delay> <Test Cdf>
<use shape info> 0 0 0 0 0
 $S <angular range> <angluar step> 2 <correction type>
(<x-offset>,<y-offset>) (<size X>,<size Y>) (0,0) (0,0) 0 <dot/bar position> <light/dark> <numpins>  # Body definition
(<lead centre x>,<lead centre y>) (<x-offset>,<y-offset>) (<size X>,<size Y>) (<footprint len>,0) (0,0) 0 <lead type> # Lead definition, repeat for numpins times
$_CDFLIB_DATA_START
$ <NAME>
<Text description>
* <Varient name 1>
* <Varient name n>  
$_CDFLIB_DATA_END



z-speed 10 = fast 150 = slow
rot-speed 10 = fast 150 = slow
XY speed 1 = fast 30 = slow
placement pressure 0= low 2=high
rej bin loc 0=default 1=A 2=B ...
prog rotate 0=0, 1=90, 2=...

body and lead dimensions in mils
#11
RV Software / Cadsoft Eagle export
October 14, 2013, 08:20:38 AM
Based on Mike's VB project to export a TFR file from PCAD,
I've written an Eagle .ULP which does a similar thing,
significantly reducing the amount of time messing with
RV Gerber.
I've also produced a CAM job which produces 3 Gerber files
which work well importing into RV Gerber.

Notes for use:
1 ) Put auto_tfr.ulp in the Eagle ULP directory
2 ) Put versatronics.cam inthe Eagle CAM directory
3 ) Open up your Eagle project.
4 ) Make sure your Fids have a name or parttype of "FID"
5 ) Run the CAM processor with the versatronics job
6 ) Run the auto_tfr ULP and save the TFR file
7 ) Close Eagle
8 ) Open RV Gerber
9 ) Open the TFR file, assigning unknown parts into the CDF
10 ) Import the 3 gerber files
11 ) Save the TFR file
12 ) Move onto RV Setup as usual

Work left to do:
1) Fix the detection of Fids to be a bit smarter
2) Automatically create custom CDF entries by exporting
the pad/shape data from the Eagle part library (soon!).




#12
RV Software / No matching CDF part
October 14, 2013, 08:09:35 AM
When there is no part in the CDF, RVGerber prompts me and
I get the option to create a new part based on a previous
part.
There doesn't seem to be any way to significantly customise
its shape, pad count or pad locations at that point: I have to
go back to the CDF->Edit CDF File menu at a later time to do
all that sort of stuff, or am I missing something?
#13
RV Hardware / Nozzle check failing
October 01, 2013, 08:19:26 PM
Starting a simple test job in RVplace goes and picks up
the rear right hand nozzle (#5?). I know I must have the right
nozzle in the tool holder as this is the largest nozzle and
won't fit into any other slot.

The head takes it to the fixed camera where I see a clean
vector drawn circle and then I get an error saying that
the nozzle might be worn, or the camera might be
dirty etc.

Looking at the calibrate menu the picture looks clean.

1) What aperture/iris setting are other people using on
their lens? Wide open, very closed or just in the middle?
This will affect depth of field as well as brightness so is
obviously important.
2) How high do people have the lens focussed before
calibration?
3) I seem to have (according to the drawing files)
nozzles 3,4 and 5.  #5 Appears to have the camera
tool insert (aluminium) in it. Should I remove this when
placing? Could that be the source of the error?

thanks.
#14
RV Hardware / Nozzle drawings
September 24, 2013, 09:03:56 PM
I either need to purchase or make some nozzles as I now have an RV1S
but only 3 nozzles.
-  Does anyone have any drawings of these?
-  Are they specific to the Versatronics units or is there some
common standard?
- If neither of the above, would anyone be willing to measure
a set up?

I don't even know which 3 I have  :o
#15
General SMT / Homebrew oven feedback
September 19, 2013, 12:07:28 AM
Just like to report that after seeing Mike's vid with the Sanyo oven
I tried something similar. I bought a VERY small oven with a top and
bottom element for £19 and controlled it by hand whilst monitoring
with a K-type probe. This oven has metal baffles around the elements
to, I guess, shield the IR radiation and encourage heating through
convection instead. Not sure if this is a good thing or not.
I'm not convinced my K-type probe is registering the same temerature
as the PCB and solder paste so will investigate further.
#16
RV Hardware / Long list of questions about RV
September 18, 2013, 11:59:23 PM
Hi all, as someone interested in but not yet in posession of one of these machines I'd like to ask a few Qs.

- Are there any things I should look carefully at when viewing a candidate purchase?

- Can either the top or bottom enclosure easily be taken off to make it more transportable?

- What happened to the order of spare nozzles earlier in the year, are there any left over?

- I understand that the RV1S doesn't have the flying camera. Does it still have a fid cam?

- Are there any .pdfs of manuals or other training material around on the 'net?

Thanks in advance. Hope that if I do get one of these I can contribute some
knowledge back to the forums as I solve problems.

Jason