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  • Author Author: joeman
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The element14 Arduino CadSoft Library (Rev C)

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We are pleased to offer our very own CadSoft library for Arduino--for free!  Our new library simplifies Arduino shield development by placing the most-popular Arduino pinouts right at your fingertips.  The latest version includes these boards: 101, Uno, Nano, Mini, Micro, Mega2560, Lilypad, Leonardo, Ethernet, and Due

 

Don't yet have CadSoft EAGLE?

 

Get your copy here!

 

Let us know what you think by posting comments below, and thanks for being a part of the element14 community!

joeman
  • in reply to DaveYoung

    Absolutely. I joined element14 website specifically to get a nano variant that would allow this (hoping it would be in this library). I think there are a lot of amateurs out here who start out by creating boards as routing for plug in modules.

  • in reply to DaveYoung

    Dave, I guess you are right, you could back-feed the board power from an external 5 V supply, so it does not make sense to force it as input.  So really there is not much that DRC can do for you on the Arduino pins.

  • in reply to Former Member

    Hi Barry-

    Thanks for the suggestion. Although I believe the power pins on the headers can both be used as an input or an output -- if you would like to drive the 5V line of the Arduino from a shield, you can run it through the header. And of course you can power the board with 9V and take 5V to power your shield. Given the many possible ways to power the board, I can also imagine someone wanting to leave the pins open. So I went with the most flexible option of I/O pin designation to cover all of the bases. Is there something missing in my logic? I'm always happy to make improvements when I've slipped up!

  • Hi Dave,

     

    Thanks for the good work on these, I built one for the Uno, but now I need the Nano- and there it is.  One quibble- you have all the pin direction properties set to I/O.  That works, but defeats the Electrical Rules Checking.  On the other hand, this is the most flexible.  Most of the pins on Arduino, are actually I/O, of course.  You should consider setting the power pins to Direction = Input, then ERC will catch if you leave them unconnected.  I don't recommend using the Direction = Pwr, though, because of Eagle's "helpful" creation of power nets that don't always do what I want.

     

    -Barry

  • in reply to robertmackinnon

    Thanks Robert-

    Seeing a second person with the same need helps to know where the desired use cases are. We'll certainly look at it for the next rev. And if anyone else is looking for the same feature, please post here to let us know!