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EAGLE User Support (English) newbie question about connecting hidden power pins
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Related

newbie question about connecting hidden power pins

jensvanhoof
jensvanhoof over 12 years ago

Hi all,

 

I just started tinkering with Eagle today for a new project and have (almost certainly) a beginners-question.

In the schematic view, I added an MAX233AEWP chip from the Maxim library.

 

Pins 6,7 and 9 (GND, VCC and GND again) are hidden, and this is normal behaviour according to different discussions on the forum.

I've then made these 3 pins visible using the invoke button, and they show up as 3 horizontal lines. I then proceeded to put these 3 lines somewhere down.

 

Next I connected both pins 9 and 6 together to a GND symbol out of the 'supply'-library (as I've done with the other components as well), and pin 7 to a +5V (also from the supply library).

When I switch to board mode I see the MAX233 component there, and pin 6,7,8 and 9 seem to be connected by a thin yellow line. I assume that pin 8 is not actually connected to that line, but just happens to be in the way.

 

When I select tools, autorouter, nothing seems to happen. With the other components so far (a bunch of resistors, capacitors etc.), this seems to work however.

 

What am I missing? Any insight would be greatly appreciated!

Thanks,

Jens

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  • jensvanhoof
    0 jensvanhoof over 12 years ago

    UPDATE:

     

    It doesn't seem to be only the power pins that have this behaviour. An attempted connection between the MAX233 and another IC shows also up as a yellow line, but won't generate a connection when I use autorouter.

    Is the autorouter maybe simply disabled for some components?

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  • jensvanhoof
    0 jensvanhoof over 12 years ago in reply to jensvanhoof

    Ok, I found the solution somewhere on the forum:

     

    I had the 'grid' option in the autorouter set to 50mil, which wasn't precise enough for the MAX233, which is an SMD component. Changed it to 5 and it worked fine!

     

    Thanks anyway!

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