Making a 4-layer PCB but Encounterining Routing Issues

Am 27.04.2018 um 15:44 schrieb Nicholas Van Nest:

Hello,

 

I am trying to make a 4-layer pcb with the following layers: TOP, BOTTOM, GND, and VCC. I made GND and VCC layers, and made polygons covering the GND and VCC layers that are assigned to each respective layer and named GND and VCC respectively (See the FIG 1 & 2). However when I use autorouter, it is evident that the components on my board are not connecting to the VCC layer. The first image shows a top layer image with VCC lines routed across the surface. Shouldn't the components just connect to the VCC layer directly by passing through to that layer on the board directly?

 

Thank you in advance for your help!

 

FIGURE 1

 

FIGURE 2

 

FIGURE 3

 

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Hi Nicolas,

please check in "DRC" Layers then Setup section

There is / have to be a String like (12*1516)

HTH

Werner

On 27.04.2018 15:44, Nicholas Van Nest wrote:

Hello,

 

I am trying to make a 4-layer pcb with the following layers: TOP, BOTTOM, GND, and VCC. I made GND and VCC layers, and made polygons covering the GND and VCC layers that are assigned to each respective layer and named GND and VCC respectively (See the FIG 1 & 2). However when I use autorouter, it is evident that the components on my board are not connecting to the VCC layer. The first image shows a top layer image with VCC lines routed across the surface. Shouldn't the components just connect to the VCC layer directly by passing through to that layer on the board directly?

 

Thank you in advance for your help!

 

FIGURE 1

 

FIGURE 2

 

FIGURE 3

Just putting a name on the layer does not mean it will be filled with

the net name. Did you add a polygon with the signal name to the layers?

When it comes to autorouter, Im clueless anyway.

Hi Nicolas,

You show us the only the TOP layer and apparently you add a polygon for VCC in VCC layer

So if you don't put any via between TOP layer and VCC layer, the polygon doesn't make a link between these both layers.

Add vias or change the layer of your polygon!

Let me know if all works
Have a nice evening

Jean-Louis

It is a little hard to tell what you mean, because I think the element14.com forums are auto formatting your post so I can't tell what symbols you are using between the numbers.

autodeskguest  wrote:

Hi Nicolas,

please check in "DRC" Layers then Setup section

There is / have to be a String like (12*1516)

 

HTH

Werner

 

I am very new to setting up the DRC, but this is what I have:

jltharin  wrote:

 

Hi Nicolas,

 

You show us the only the TOP layer and apparently you add a polygon for VCC in VCC layer

So if you don't put any via between TOP layer and VCC layer, the polygon doesn't make a link between these both layers.

Add vias or change the layer of your polygon!

Let me know if all works
Have a nice evening

Jean-Louis

I'm not sure why I would want to link between the TOP layer and the VCC layer. I want the VCC layer to be at 3.3V, and the GND layer to be grounded. Would I go to the ports of my power supply to run a 3.3V and ground line to each of those polygons?

Kind regards,

Nick

autodeskguest  wrote:

 

Just putting a name on the layer does not mean it will be filled with

the net name. Did you add a polygon with the signal name to the layers?

When it comes to autorouter, Im clueless anyway.

 

I made a polygon for each layer (VCC and GND). This is the example of the VCC polygon's properties:

On 02/05/18 16:57, Nicholas Van Nest wrote:

I'm not sure why I would want to link between the TOP layer and the VCC layer.

Because your components, which need to connect to VCC, are on the TOP layer.

On 02.05.2018 18:07, Nicholas Van Nest wrote:

  wrote:

 

Just putting a name on the layer does not mean it will be filled with

the net name. Did you add a polygon with the signal name to the layers?

When it comes to autorouter, Im clueless anyway.

 

 

I made a polygon for each layer (VCC and GND). This is the example of the VCC polygon's properties:

 

 

This polygon looks awafully tiny to me.. from (0 0) to (0 1.4)? Its 0mm

wide and 1.4mm tall? It needs to fill the whole pcb.

On 02.05.2018 18:07, Nicholas Van Nest wrote:

  wrote:

 

Just putting a name on the layer does not mean it will be filled with

the net name. Did you add a polygon with the signal name to the layers?

When it comes to autorouter, Im clueless anyway.

 

 

I made a polygon for each layer (VCC and GND). This is the example of the VCC polygon's properties:

 

 

This polygon looks awafully tiny to me.. from (0 0) to (0 1.4)? Its 0mm

wide and 1.4mm tall? It needs to fill the whole pcb.

On 02.05.2018 18:07, Nicholas Van Nest wrote:

  wrote:

 

Just putting a name on the layer does not mean it will be filled with

the net name. Did you add a polygon with the signal name to the layers?

When it comes to autorouter, Im clueless anyway.

 

 

I made a polygon for each layer (VCC and GND). This is the example of the VCC polygon's properties:

 

 

This polygon looks awafully tiny to me.. from (0 0) to (0 1.4)? Its 0mm

wide and 1.4mm tall? It needs to fill the whole pcb.