Wiring problem on Eagle

On 7/22/2016 11:42 AM, djib ty wrote:

Hello,

I got a problem because I can't wire to a component I created. First, I created a library for the component with Symbol, then Package and Device.

But when I am using this component on my schematic, I can't wire it. I used the same scale and grid for all the schematics and I updated libraries. But it is impossible to wire it.

If anyone has an idea to solve my problem ?

 

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Hi Djib,

I hope you're doing well. Make sure that the part was made to a 0.1"

grid. Also in order to see the connection points clearly turn on layer

93 Pins in the schematic. You will now see lots of green circles one for

each pin. The center of those circles is the connection point, all of

your nets must start and end on the exact center of these circles(this

is why it's important to stay on a 0.1" grid). If you don't see green

circles on your part then that means you didn't use the PIN command and

you need to go back to your library and create pins. One final thing to

check make sure you are using the NET command to create your connections.

Let me know if there's anything else I can do for you.

Best Regards,

Jorge Garcia

Hello Jorge,

I turned on layer 93 Pins on the schematic and I can see green circles for each pin of my component.

Unfortunately, I still can't wire it because the nets don't start or end on the exact center of the circles.

Meanwhile, I used 0.1 inch grid for Symbol, Package and Device. Then, I updated libraries but it's the same problems with nets which can't connect in the exact center of the circles.

Hello,

From what you are saying Jorge is right, the issue is things not being on the 0.1" grid. So you need to do a few things.

1) Double check your grid set up on your schematic is 0.1" still.

2) Use the MOVE function to snap each or your components to the grid using ctrl+click on each to ensure they are correctly aligned to the grid.

3) If you still have a problem, edit your symbol and perform the same operations as above for each of the pins in the symbol to ensure they are correctly on the grid and then replace the part in the schematic with your updated one.

The steps above should hopefully resolve your problem.

Best Regards,

Rachael

That's great, I'm glad it's all working for you now :-)

Best Regards,

Rachael

I understand what you mean.

In symbol, I don't have the exact dimensions of the connector of the sensor. But I can connect the wires.

In package, I modified the dimensions of the connector, I put the right ones and I got the exact dimensions of my connector in the layout.

So, I think the issue is resolved.

Yes you are right, I put the right dimensions of the pins in Package and it works. I got the right dimensions in the PCB and in the final schematic.

I thank you a lot Rachaelp

On 7/25/2016 11:33 AM, djib ty wrote:

Ok now I can connect wires because I used 0.1" grid but I don't have the good dimensions. For example, I need to have x=0 and y=8.5mm for a pin and I used x=0 and y=0.3 inches (7.62 mm).

That's a big issue.

Hi Djib,

Not in the symbol. It's important to create a distinction between the

schematic and the layout. In the layout you have to obey physics and

your packages need to accurately mirror the physical devices.

The same is not true of the schematic. The goal of the schematic is to

be a symbolic representation of your design that is easy to read and

clearly describes your design intent. The symbols in your schematic

don't need to match the exact dimensions of your component. That's why

the 0.1" requirement only applies to the schematic and symbol for

everything else you can use whatever grid is convenient.

The dimensional requirement you are describing only applies to the

package not to the symbol, so you don't have an issue.

hth, let me know if there's anything else I can do for you.

Best Regards,

Jorge Garcia

On 7/25/2016 11:33 AM, djib ty wrote:

Ok now I can connect wires because I used 0.1" grid but I don't have the good dimensions. For example, I need to have x=0 and y=8.5mm for a pin and I used x=0 and y=0.3 inches (7.62 mm).

That's a big issue.

Hi Djib,

Not in the symbol. It's important to create a distinction between the

schematic and the layout. In the layout you have to obey physics and

your packages need to accurately mirror the physical devices.

The same is not true of the schematic. The goal of the schematic is to

be a symbolic representation of your design that is easy to read and

clearly describes your design intent. The symbols in your schematic

don't need to match the exact dimensions of your component. That's why

the 0.1" requirement only applies to the schematic and symbol for

everything else you can use whatever grid is convenient.

The dimensional requirement you are describing only applies to the

package not to the symbol, so you don't have an issue.

hth, let me know if there's anything else I can do for you.

Best Regards,

Jorge Garcia

That's great, I'm glad it's all working for you now :-)

Best Regards,

Rachael

I understand what you mean.

In symbol, I don't have the exact dimensions of the connector of the sensor. But I can connect the wires.

In package, I modified the dimensions of the connector, I put the right ones and I got the exact dimensions of my connector in the layout.

So, I think the issue is resolved.