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new user help please

steve999

Hello All,

 

I am new to using Eagle and still getting my head round it.

 

How do i check a foot print in a library ? as i wish to check that the diamensions are correct for my part.

I want to check the 9 pin D plug and socket in THOMAS&BETTS  H2M09RA29A

I am using Eagle 6.1.0  Light

 

Steve

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    At my employer, we frequently have to input new footprints, then verify that they're correct.  I presume you have a printer of some sort available -- laser or inkjet, most will work.

     

    Draw up a new schematic with just the part in question.  Flip over to looking at the board, and establish the size of the board very precisely (in both X and Y directions), selecting a size that will fit on a sheet of paper for your printer.  Place the part on the board, don't worry about air wires.

    Under the File menu, click on "Print setup..." and make sure that "Scale factor" and "Calibrate" are all 1, and adjust the other items as you like.  Now use Print to get it out to paper.

     

    Grab the most precise measuring device you have, and measure the printed board size and compare to the size you specified.  You may need to adjust the Calibrate settings and reprint.  Once you have an accurately sized print, compare it to the physical device.  We have a microscope in our lab, and I usually use that (then again, I'm sometimes working with pin spacings of 0.65mm center-to-center), but for something like a D plug you mention, a magnifying glass is probably sufficient.  (Or, if you're near-sighted like I am, just take off your glasses!)

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  • 0

    At my employer, we frequently have to input new footprints, then verify that they're correct.  I presume you have a printer of some sort available -- laser or inkjet, most will work.

     

    Draw up a new schematic with just the part in question.  Flip over to looking at the board, and establish the size of the board very precisely (in both X and Y directions), selecting a size that will fit on a sheet of paper for your printer.  Place the part on the board, don't worry about air wires.

    Under the File menu, click on "Print setup..." and make sure that "Scale factor" and "Calibrate" are all 1, and adjust the other items as you like.  Now use Print to get it out to paper.

     

    Grab the most precise measuring device you have, and measure the printed board size and compare to the size you specified.  You may need to adjust the Calibrate settings and reprint.  Once you have an accurately sized print, compare it to the physical device.  We have a microscope in our lab, and I usually use that (then again, I'm sometimes working with pin spacings of 0.65mm center-to-center), but for something like a D plug you mention, a magnifying glass is probably sufficient.  (Or, if you're near-sighted like I am, just take off your glasses!)

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