For a motor with enc. resolution 2000 -

For a motor with enc. resolution 2000 - what enc. rsolution should I set ii MAX (for 7344 MC) 2000 or 4000 ?

Hello,
If your quadrature encoder has 2000 counts per revolution then you should enter 2000 in MAX for encoder counts per revolution field.
Let me know if you have further questions regarding this.
Yusuf C.
Applications Engineering
National Instruments

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I'm trying to make a driver for a DC motor with pot as the direction and speed control. I have simulated my circuit however, I encounter problem with the increment of the output voltage and current of the driver. the increments are good from pot percent of 5% - 95% however when it reaches either 0% or 100% the output greatly increases (i.e 90% - 0.5V, 95% - 0.6V, 100% - 2.5V). I'm just worrying that this will result to a sudden RPM boost as it reaches either 100% or 0%. I'll attach a picture of the circuit. Thanks!
Attachments:
hbridge.png ‏13 KB

Lawrey,
Learning to design circuits is a process which takes some time. I have been at it for 40+ years and am still learning. Simulators are really analysis tools.
I think of design as an iterative process. Start with a specification. In your example you apparently want to drive a small motor with a continuously variable magnitude (speed, torque, power?) and direction. You do not have any feedback. Next you select a circuit configuration, such as your H-bridge. With such a configuration you can do some simple analyses (before selecting transistors) of maximum voltage, current, and power dissipation at each transistor. This would be similar to the analysis I posted above, but somewhat simplified (ignoring base currents and hFE for example). The values determined from this preliminary analysis can be used to select suitable transistors. You know the current rating has to be larger than the maximum motor current and the power rating will be larger than that of the devices you initially selected.
At this point you have a preliminary design with some specific transistors selected. Performing an analysis like mine will likely show that single transistors in each leg of the H-bridge will not work and that you need a Darlington configuration in all four positions (unless you want a 10 ohm, 20 watt pot). So now you need four more transistors. A few calculations on resistor values will give you a complete circuit.
At this point you run the simulation. Check the results, first to verify that it performs as you expect, and, second, carefull,y to see if any component has exceeded its ratings. Many simulation models do not accurately represent the ratings limits. For any part of the circuit which does not perform well or which exceeds ratings you modify the design and then repeat. Just think about how much more difficult this was before simulation software existed and all those calculations were done manually.
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Hi,
I have been unable to make any progress on this issue. I have made use of prebuilt update handlers with no problems
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Hello,
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There are two ways to do elliptical arc moves:
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National Instruments

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PDFs are low res even with Fixed Resolution deselected

Motion 5.0.6
I am working on a project with a single pdf file imported from Illustrator. There are no other layers in the file, the pdf has no filters applied and Fixed Resolution is selected off. Render is set to Full resolution and Quality to Normal. For some reason the image displays in low resolution when I zoom in. Any ideas? Thanks.

When no camera is present, you simply scale the PDF image, or you can manipulate the Position.Z paramater.
Fixed Resolution is Motion's way of keeping the brakes on a file that has potential for unlimited resolution. It's a safety net designed to keep performance reasonable.
When a PDF is imported, it comes into Motion with the document dimensions with which it was created, and Motion will render it on the canvas with those dimensions and set the resolution of the image with those dimensions. As long as Fixed Resolution is checked, it will be treated as a standard image even though it might contain vector shapes.
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Below is a PDF I imported. Note the dimensions of 298x278:
(The Media tab is selected and the PDF layer is also selected -- then in the Inspector, the Media tab is where you'll find these controls [along with the Fixed Resolution checkbox... for those who might not know how to get to it])
Scaling the image greater than 100% in the canvas will result in softening of the image (like any other plain image) with fixed resolution on.
Below, I have modified the Fixed Width and Fixed Height (dragging one will automatically change the other based on the Pixel Aspect Ratio setting.) In this example, I have reset the Fixed Width to 2000.0.
I can now resize (scale) my PDF up to the dimensions I have set with Fixed Width/Height -- with Fixed Resolution still on, and still maintain a pristine vector appearance of the image (as long as the Canvas view is at 100% or less).
It still limits the PDF vectors to reasonable limits and allows you to get the smooth line appearance you expect from vector shapes.
PS - You could even take advantage of the Fixed Resolution degrading the image as it gets "closer" in view by tweaking those parameters to create the illusion of losing focus.
HTH

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Hello again everyone. I just wanted to provide an additional update to my last post. I have also been talking with someone who suggested a Parker stepper driven lead screw stage, model: Promech LP28 with 50mm travel with limit switches http://divapps.parker.com/divapps/emn/pdf/PROmech.pdf. The suggested that I could use the IMS MForce Microstepping Drive as the most economical drive solution http://www.imshome.com/products/mforce_microdrive_mfi.html, or a galil driver. It seems that the IMS doesn't have as much labview support (only a few VI's) http://www.imshome.com/support/mdrive/programs/MCode_LV_86.zip, but the Galil drivers seem to be very easy to use with labview http://www.galilmc.com/support/appnotes/software/note4414.pdf. I don't know how much the Parker Promech stage was quoted at $600, the IMS drive at $250, and I don't know what the Galil driver cost but I was told it is more, and ~350 for cables and a power supply.
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Hi jsunem Most definitely avoid!!!There is no sellers protection for vehiclesAlso any items that need collection NEVER accept ppal cash on collection always What is PayPal Purchase Protection? These steps apply to Personal PayPal accounts. If you have a Business account, please log in to your account to see the steps that apply to you. When you pay with PayPal on any website PayPal Purchase Protection covers you if you have a problem. If an item doesn’t arrive or is significantly not as described we will help you to get a full refund.
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on the pc, i have it set up like that and its able to handle both resolutions fine.
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run quicktime FULLscreen on my flat panel while still having access to my FULLresolution mac display (so i can play a movie or tv show on my flatpanel and still surf the net or run other apps simutaneosly(sp?) on the mac display)
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anyways, i can do this with my PC just fine, the card in my pc is about 3 years old so i dont think its a hardware problem, i'm just not settled in with aqua yet so i'm asking for help.
anyone know how i would do this?
so to recap:
one imac display at full resolution (and no movie clone, at least not at full screen anyways) while the mac plays a movie full screen to another display (ie, my 1080i flatpanel tv).
thanks everyone.

i understand that if i have the mirror turned off it works if i have quicktime running on my secondary monitor (my flat panel) but if i'm working on something else the audio will switch to what ever else i'm working on. it also renders my little apple remote useless.
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can quicktime do that? or am i stuck just not-mirroring the displays and moving the movie over to the secondary screen and run fullscreen?
thanks JD for your post.

Hello everyone, I would like to know if a retina display macbook 15 "there is a way to connect 2 monitors full hd and use it as if it were a single monitor with a resolution of 3840x1080. Thanks

Hello everyone, I bought a macbook retina 15 "display.'ve Connected 2 full hd 1920x1080 monitor as extended desktop, if I cast two movies I can see them on the second monitor, but if I wanted to launch 3840x1080 1 movie how do I watch on two monitors side by side ? same thing if I wanted to work on both monitors as if it were a single monitor with a resolution of 3840x1080. I hope for your reply, sorry for my English, I used a translator. Thanks

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How to copy and paste the graphics from illustrator to MS word. What I tried is exporting in png with highest resolution and then inserting in to word. This loses a bit of resolution in comparison to direct copy and paste as EMF. But if I do a copy and p

How to copy and paste the graphics from illustrator to MS word. What I tried is exporting in png with highest resolution and then inserting in to word. This loses a bit of resolution in comparison to direct copy and paste as EMF. But if I do a copy and paste, and then take a print of the document, all the graphs and text is printed upside down, flipped back.

Use the Pencil Tool
alex
adrian stock wrote:
> How to copy and paste a single pixel
>
> I want to copy a single pixel and then paste it in the
position of
> another pixel in the same image.
>
> (This is in effect changing the colour of the target
pixel, isn't it.
> But in my case copying an existing pixel seems simpler
than selecting a
> colour from the swatch or using the colour picker.)
>
> What is the most efficient way of doing this?
>
> I tried to select one pixel with the marquee tool. Then
copied it with
> control-C, but then how do I select the target pixel and
paste with
> control-V?
>
> Thanks for your help.
>
> Adrian
>

For a motor with enc. resolution 2000 -

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