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Adding 2804 - Darlington Transistor Array

Former Member

Hey everyone,

 

I am new to Eagle software and to schematic design in general, but I am having an issue trying to add a part from the transistor-array.lbr, more specifically, the ULN-2804.

 

I try to add it and I get an error saying that it has unconnected pins. I go into the Library Editor and the Connect screen. I can see the extra pin G$1.19, however I cannot figure out how to remove it. Can anyone assist? Since I am new to this program, the more detail the better.

 

Thank you!

Joe

  • 0

    On Sun, 10 Apr 2011, firebirdta84 wrote to us saying :

    >I am new to Eagle software and to schematic design in general, but I am

    >having an issue trying to add a part from the transistor-array.lbr,

    >more specifically, the ULN-2804.

     

    The version of this device in the uln-udn.lbr works for me. I suggest

    you try that one.

     

    You may want to try fixing the faulty one by editing the library,

    because creating and editing library parts is a skill you will find

    invaluable very soon, but for now I'd use the one that's correct.

    --

    Rob Pearce                       http://www.bdt-home.demon.co.uk

     

    The contents of     | All power corrupts, but we need electricity.

    this message are    |

    purely my opinion.  |

    Don't believe a     |

    word.               |

     

  • 0 in reply to Former Member

    Thank you so much! I must have missed that library during my initial search.

     

    Joe

  • 0

    Am 10.04.2011 15:31, schrieb firebirdta84:

    Hey everyone,

     

    I am new to Eagle software and to schematic design in general, but I am having an issue trying to add a part from the transistor-array.lbr, more specifically, the ULN-2804.

     

    I try to add it and I get an error saying that it has unconnected pins. I go into the Library Editor and the Connect screen. I can see the extra pin G$1.19, however I cannot figure out how to remove it. Can anyone assist? Since I am new to this program, the more detail the better.

     

    Thank you!

    Joe

     

     

    Wellcome on board image

    The library files in the download section are user files. Some of them

    have errors and besides nobody garantees for error free libraries anyway.

    Usually eagle users report errors of Cadsoft files, so they can be

    corrected on the next update. That does not go for user files.

     

    In case of the mentioned library the pin 19 is on top of pin 4 in the

    symbol. You can find it by moving that pin away from the original

    position in the library. Then you can remove it.

    You could have found the device in the eagle uln-udn.lbr by the way.

    But if you prefer the more graphic symbol of the user library then you

    should also correct the (electrical) direction of the pins which here

    are all wrong I/Os. Correct would be INPUTS and OC (open collectors).

    You should correct that library for your own skill because library

    editing makes the other 50% of layouting. Aaaaand finally you should not

    touch the eagle libraries. Create your own libraries because all of your

    work will be lost if you do an eagle update and the libraries are

    overwritten image

     

    --

    Mit freundlichen Grüßen / With best regards

     

    Joern Paschedag