Javid Butler wrote:
A microcontroller will definitely give you better response (EMC is to slow
to really scan the laser-machine tools are moving about an order of
magnitude slower than a laser scan), but you would have to code the graphics
or find a way to convert them. Easy enough for
Controller (EMC) emc-users@lists.sourceforge.net
Sent: Sunday, December 02, 2007 3:36 AM
Subject: Re: [Emc-users] open loop galvanometer control
--- Jon Elson [EMAIL PROTECTED] wrote:
I don't see how EMC2 can handle this drawing task
from G-code at
the rates required. To draw even simple images
On Sunday 02 December 2007, Peter C. Wallace wrote:
I do like the open loop idea of full force for 1/2 of the time and then
reversing the the force (I've known people who drive like that)
Also with the galvanometer, absolute angular accuracy is probably less
important that repeatbility.
For
The idea is that you drive it with 10x its rated current, but just for
about 1/2 the time it would take to move, and drive it in reverse just as
hard to stop it at the target point, then hold it in that position with
the servo feedback at its normal current until its time to make the next
I have two open loop galvanometers (
http://www.laserfx.com/Backstage.LaserFX.com/Systems/Pinouts/MFEdataLG.jpg
) which i would like to use emc controlled laser show
(similar to this one:
http://elm-chan.org/works/vlp/report_e.html ).
I will use a hardware encoder for measuring the angle
of
AM
Subject: [Emc-users] open loop galvanometer control
I have two open loop galvanometers (
http://www.laserfx.com/Backstage.LaserFX.com/Systems/Pinouts/MFEdataLG.jpg
) which i would like to use emc controlled laser show
(similar to this one:
http://elm-chan.org/works/vlp/report_e.html ).
I
On Sat, Dec 01, 2007 at 06:13:17AM -0800, Klemen Dovrtel wrote:
The galvanometer is current driven, so i was thinking
of using a op-amp and R-2R resistor ladder for current
source. So i need a 10 bit digital output for R-2R
resistor ladder (instead of pwm used in etch-servo
sample
Hi Klemen
The distortion of the shape of the image on the wall is often referred
to as parallax by the folks that work with projectors and cameras and
images.
In EMC2 and machine tool terms we would think of it as a non-trivial
kinematic and you are into the very recent post by Jeff. The X, Y,
there are open algorithms out there
that can be applied to EMC as well.
Javid
- Original Message -
From: Ray Henry [EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Saturday, December 01, 2007 10:18 AM
Subject: Re: [Emc-users] open loop galvanometer
(just put in a
line-level audio signal - it's fun) so you have a known working baseline
instead of trying to hunt down unknown peculiarities.
Cheers,
Ted.
Original Msg
Date: Sat, 1 Dec 2007 06:13:17 -0800 (PST)
From: Klemen Dovrtel [EMAIL PROTECTED]
Subject: [Emc-users] open loop galvanometer
On Saturday 01 December 2007, Klemen Dovrtel wrote:
I have two open loop galvanometers (
http://www.laserfx.com/Backstage.LaserFX.com/Systems/Pinouts/MFEdataLG.jpg
) which i would like to use emc controlled laser show
(similar to this one:
http://elm-chan.org/works/vlp/report_e.html ).
I will use
] open loop galvanometer control
On Saturday 01 December 2007, Klemen Dovrtel wrote:
I have two open loop galvanometers (
http://www.laserfx.com/Backstage.LaserFX.com/Systems/Pinouts/MFEdataLG.jpg
) which i would like to use emc controlled laser show
(similar to this one:
http://elm-chan.org
-users@lists.sourceforge.net
Subject: Re: [Emc-users] open loop galvanometer control
On Saturday 01 December 2007, Klemen Dovrtel wrote:
I have two open loop galvanometers (
http://www.laserfx.com/Backstage.LaserFX.com/Systems/Pinouts/MFEdataLG.jp
g ) which i would like to use emc controlled laser
Klemen,
regarding galvos drawing
I saw a spectacular show at Encore Gardens, outside Taichung Taiwan in
2005.
They use a water screen to project onto ( dozens of vertical jets )
coming out of a pool.
All outdoor at dusk, and on into the night.
As night fell the water screen rises out of a pool in
Subject: Re: [Emc-users] open loop galvanometer control
On Saturday 01 December 2007, Klemen Dovrtel wrote:
I have two open loop galvanometers (
http://www.laserfx.com/Backstage.LaserFX.com/Systems/Pinouts/MFEdataLG.jpg
) which i would like to use emc controlled laser show
(similar to this one:
http
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