I know how to make a round board but our enginering departement asked me to
produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
I know how to make a round board but our enginering departement asked me to
produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
Harry H. Arends wrote:
I know how to make a round board but our enginering departement asked me
to produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
Hi Harry,
This is somewhat time consuming but below are the steps that I use for
creating a circular board with a circular pattern of holes.
1. Start your circle at the orgin.
2. Use the circle command to draw your circle: e.g.
Example
GRID inch 1;
CIRCLE (0 0) (1 0);
generates a circle with a radius of 1 inch and the center at the origin.
3. Repeat step 2 for your inner circle: e.g.
Example
GRID inch 1;
CIRCLE (0 0) (.75 0);
generates a circle with a radius of .75 inch and the center at the origin.
4. Using mark command mark the origin.
Example
MARK (0 0)
5. Now the tricky part. Again using the mark command with polar
coordinates mark the first smaller circle.
Example
MARK (P.75 0)
6. Use the circle command (Polar coordintates) to draw your circle: e.g.
Example
GRID inch 1;
CIRCLE (P0 0) (.025 P0)
generates a circle with a radius of .025 inch and the center at the
origin (relative to mark).
To place the next hole.
7.Repeat step 4, Using mark command mark the origin.
Example
MARK (0 0)
8. Repeat step 5, (However use next angle position) Again using the mark
command with polar coordinates mark the first smaller circle.
Example
MARK (P.75 7.5) Note: The hole rotation will be counter-clockwise.
9. Repeat step 6, Use the circle command (Polar coordintates) to draw
your circle: e.g.
Example
GRID inch 1;
CIRCLE (P0 0) (.025 P0)
generates a circle with a radius of .025 inch and the center at the
origin (relative to mark).
10. Repeat steps 4, 5, 6 adding the required angle delta (in your case
7.5 degrees) to complete the hole pattern.
I hope this helps. If anyone else has a better way please post.
Cheers
Eagle User
"Harry H. Arends" <info@time-tech.eu> wrote in message
news:gped9j$21i$1@cheetah.cadsoft.de...
I know how to make a round board but our enginering departement asked me to
produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
You only need to calculate ONE hole for this. Work at 3, 6, 9, or 12
o'clock. Lets say you're at 6:00... .
Draw the circular board outline with the origin as center. Draw your first
hole at 6:00.
Copy the hole and place the copy outside the circle, (use a coarse grid if
you can).
Group the board, rotate it by 7.5 degrees, then copy the hole copy back to
the 6:00 position.
Group the board, rotate...
(To rotate the PCB: group the entire PCB, click the move icon, RIGHT click
the group AT THE ORIGIN, type 7.5 in the angle box, ENTER, LEFT click the
ORIGIN. The board should have rotated 7.5 degrees. You might want to make an
index mark at some point on the board before you start, that's up to you.
It would get more complicated if you had to do oddball angles, (maybe,
360/7?) but you could work with some multiple of the base angle - depending
on your allowable error.
Since the total number of holes is divisible by four, you can probably do a
group copy once you're 1/4 the way done, then once again for the second
half. Simply eyeball the placement. You will have extra board outlines on
top of the original that should be removed.
oww, dizzy -gottaa go
Can you not make a DXF form your drawing and import to eagle?
OK you must perhaps set holes manuel.
Thierry
"Brett Holden" <brettholden@bellsouth.net> skrev i melding
news:gpf3m0$imc$1@cheetah.cadsoft.de...
"Harry H. Arends" <info@time-tech.eu> wrote in message
news:gped9j$21i$1@cheetah.cadsoft.de...
I know how to make a round board but our enginering departement asked me
to produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
You only need to calculate ONE hole for this. Work at 3, 6, 9, or 12
o'clock. Lets say you're at 6:00... .
Draw the circular board outline with the origin as center. Draw your first
hole at 6:00.
Copy the hole and place the copy outside the circle, (use a coarse grid if
you can).
Group the board, rotate it by 7.5 degrees, then copy the hole copy back to
the 6:00 position.
Group the board, rotate...
(To rotate the PCB: group the entire PCB, click the move icon, RIGHT click
the group AT THE ORIGIN, type 7.5 in the angle box, ENTER, LEFT click the
ORIGIN. The board should have rotated 7.5 degrees. You might want to make
an index mark at some point on the board before you start, that's up to
you.
It would get more complicated if you had to do oddball angles, (maybe,
360/7?) but you could work with some multiple of the base angle -
depending on your allowable error.
Since the total number of holes is divisible by four, you can probably do
a group copy once you're 1/4 the way done, then once again for the second
half. Simply eyeball the placement. You will have extra board outlines on
top of the original that should be removed.
oww, dizzy -gottaa go
I think you will have to use a script. Create a circle in the
dimension layer with a wire of 0 and the correct diameter and arc.
Then for each of the slots specify the exact co-ordinates of the
squares/slots on a circle inset from the outer edge, then rotate each
slot in polar co-ordinates
On Fri, 13 Mar 2009 20:50:14 +0100, "Harry H. Arends"
<info@time-tech.eu> wrote:
I know how to make a round board but our enginering departement asked me to
produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
Sorry for the late answer but i have been in hospital for some weeks.
The problem doenst lies in the holes but the notches in the outer rim.
Harry
"Robert Lewis" <robert.lewis@iMnMicroControl.com> schreef in bericht
news:4fnsr4dcba9hol6fn18oapshl59e79ona0@4ax.com...
I think you will have to use a script. Create a circle in the
dimension layer with a wire of 0 and the correct diameter and arc.
Then for each of the slots specify the exact co-ordinates of the
squares/slots on a circle inset from the outer edge, then rotate each
slot in polar co-ordinates
On Fri, 13 Mar 2009 20:50:14 +0100, "Harry H. Arends"
<info@time-tech.eu> wrote:
I know how to make a round board but our enginering departement asked me
to
produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
How can i import a dxf drawing into eagle
"Thierry Pottier" <tp@tpelectronics.no> schreef in bericht
news:gpihd2$8nv$1@cheetah.cadsoft.de...
Can you not make a DXF form your drawing and import to eagle?
OK you must perhaps set holes manuel.
Thierry
"Brett Holden" <brettholden@bellsouth.net> skrev i melding
news:gpf3m0$imc$1@cheetah.cadsoft.de...
"Harry H. Arends" <info@time-tech.eu> wrote in message
news:gped9j$21i$1@cheetah.cadsoft.de...
I know how to make a round board but our enginering departement asked me
to produce a disk like the one in this drawing:
http://www.time-tech.eu/Detector_Wheel.pdf
Could someone tell me how to do this?
Thanks
Harry
You only need to calculate ONE hole for this. Work at 3, 6, 9, or 12
o'clock. Lets say you're at 6:00... .
Draw the circular board outline with the origin as center. Draw your
first hole at 6:00.
Copy the hole and place the copy outside the circle, (use a coarse grid
if you can).
Group the board, rotate it by 7.5 degrees, then copy the hole copy back
to the 6:00 position.
Group the board, rotate...
(To rotate the PCB: group the entire PCB, click the move icon, RIGHT
click the group AT THE ORIGIN, type 7.5 in the angle box, ENTER, LEFT
click the ORIGIN. The board should have rotated 7.5 degrees. You might
want to make an index mark at some point on the board before you start,
that's up to you.
It would get more complicated if you had to do oddball angles, (maybe,
360/7?) but you could work with some multiple of the base angle -
depending on your allowable error.
Since the total number of holes is divisible by four, you can probably do
a group copy once you're 1/4 the way done, then once again for the second
half. Simply eyeball the placement. You will have extra board outlines on
top of the original that should be removed.
oww, dizzy -gottaa go
Harry H. Arends schrieb:
How can i import a dxf drawing into eagle
Take a look at the Download area, Misc folder.
There are two or three tools that allow to convert DXF into EAGLE
script format. Simply search for "dxf" with the search function
of your browser.
--
Mit freundlichen Gruessen / Best regards
Richard Hammerl
CadSoft Support -- hotline@cadsoft.de
FAQ: http://www.cadsoft.de/faq.htm
On Wed, 20 May 2009, Richard Hammerl wrote to us saying :
Harry H. Arends schrieb:
How can i import a dxf drawing into eagle
Take a look at the Download area, Misc folder.
There are two or three tools that allow to convert DXF into EAGLE
script format. Simply search for "dxf" with the search function
of your browser.
Bear in mind, though, that the DXF format is a very loose standard and
the import tools have limitations on which object types they cope with.
When I tried it on a logo design, the tools all achieved exactly the
same result - nothing.
--
Rob Pearce http://www.bdt-home.demon.co.uk
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