creating custom component

[lidi]

Hi !

I trying to make a custom new simulateable component.
Making the component as a subcircuit is done, and working.

Then i copy the subcircuit to new project, then export the netlist.
Then i edit this .cir file a bit (put in the front .SUBCKT with name, and nodes, and the end the .ENDS), and then using the component wizard, loading this model file.
But if using my new component, the circuit not work.

[lacy]

I have tried everything I can think of to make this work as a created component, but I have not been successful. It may have something to do with using the digital components in this manner that is causing this, but that is my theory.

What you can do is to take the original subcircuit, copy its contents to a separate schematic, save it as 4021. This will allow you to re-use it in other designs as a hierarchy block. A hierarchy block is just a schematic that can be used from design to design and is placed as a subcircuit within the main schematic. This is the only way I know of getting this to work.

I wish I could have been more help.

[lacy]

As a note to my last post. You would not be able to transfer this to Ultiboard like this. I tried it and it doesn't work. It transfers the entire subcircuit as individual components instead of one part. The one option here is to create a dummy component with no model and use that in place of the subcircuit when doing the transfer.

I hope this helps some.

[lidi]

Thanks for the quick reply. Yeah, i plan to transfer to ultiboard, and it would be nice if it works on the simulation too. I hope, maybe a future version make it possible to assign footprint to subcircuit.

But the idea of transforming subcircuit to components this way, is useable ?
With simplier components i have success. (for ex. resistor divider, diode bridge )

[lacy]

Yes, this technique of creating components like you did is about the only way to create some IC's. What I believe is happening here is something is getting confused when you export the circuit. You are using digital 4020 IC's and other pre-made digital components that are already subcircuits per se and I think it just can't interpret it properly on importing it back. I

This may go back to another issue of using digital components inside subcircuits that return errors. If this is another form of that issue, then it has already been reported to NI and hopefully they are looking into it.

I agree that there there should be some way of adding footprints to subcircuits and have it export properly. This would solve a lot of component creation issues.