Unable to delete certain object.

Hi Aaron,

From the picture and the description its not immediately apparent to me what you are trying to delete. There are a couple of things to try off the top of my head, first check that you have the tOrigins layer turned on. Without tOrigins you can't select a component and therefore wont be able to delete it. Secondly check that it's not locked. Right click on the object and you get get a pop up context menu. If it says "unLock" in the menu then it is currently locked. If this is the case select the "unLock" option.

I assume you have both the schematic AND the board file open together? If not then they will be out of sync and will mean back annotation wont work. The other thing which could be stopping you deleting is that components should be deleted from the schematic and not from the board. If this was the error you'd get a pop-up message telling you so which as you haven't said this is probably not the case.

Best Regards,

Rachael

rachaelp wrote:

 

I assume you have both the schematic AND the board file open together? If not then they will be out of sync and will mean back annotation wont work. The other thing which could be stopping you deleting is that components should be deleted from the schematic and not from the board. If this was the error you'd get a pop-up message telling you so which as you haven't said this is probably not the case.

On reading back what I wrote and looking at what you are doing again, I actually now think you have just the board open and are deleting components directly from there. If so then this is probably not what you want to do. Re-download the files if you don't have an unedited copy of the board and open them both up and then delete what you don't want from the schematic. They will all be removed from the board by the automatic back annotation. Then switch to the board and tidy up and tracks and polygons which remain that you no longer need.

Best Regards,

Rachael

Thanks Rachel for your input. Actually I started from deleting components from the schematic, then I realized there are few things that can only be deleted from the board window, i.e. ground pour, text, Via etc.

So I'm down to this components in the schematic, https://s28.postimg.org/kgykri2i5/capture2.png.

If the picture isn't really clear, I've uploaded a schematic of it, https://www.dropbox.com/s/1x6jtwo055v150h/Arduino_MEGA_2560-Rev3.sch?dl=0

I downloaded the eagle files directly from Arduino's website, is there a chance that is prevents me from deleting some components because it comes in the package?

Hi Aaron,

So it's the 6 holes you need to be able to delete then? I downloaded and had a look at the Mega 2560 schematics from Arduino's website and I could delete the holes once I turned the holes layer (45) on.

Best Regards,

Rachael

Nope, I'm referring to the top layer in the middle(red in color). I need the 6 holes as I need to do some design using the pin layout.

Ok, I must be completely misunderstanding what you are trying to achieve. That's the pads of the ATMEGA2560 which is still in your schematic. I thought you wanted to keep this?

Okay maybe I'll need to rephrase my question.

So in the board window, there are currently few layers on it, one of them is the top layer right? Which is in red colour(refer to the image in my very first post).

Problem: I want to keep all the other layers except for the top layer(red color layer) for now, but the delete function does not seem to function for me.

I apologize if I still sound crazy haha, this is my second try at eagle.

Aaron Qwe wrote:

 

I apologize if I still sound crazy haha, this is my second try at eagle.

I'll be honest, it does a little but maybe that's because I don't understand what you are really trying to achieve so lets take a step back. So why don't you want the top layer of the board?

The pads of the ATMEGA2560 which are on the top layer are part of the component. You can't just remove those unfortunately. Why do you want the ATMEGA2560 in the schematic if you don't want it's pads on the board?

Well my objective is to only have the pin spacings from the original board layout. From there, I'll introduce some connectors that will connect to some of the I/O pins of the Arduino Mega.

So my understanding on how to achieve this was to remove everything except for the drill/hole that is situated at the I/O pin, including the pads of the ATMEGA2560 because I thought that including it would have it been fabricated too.

You may want to follow a different approach and have a look here:

https://www.element14.com/community/community/arduino/blog/2013/11/05/finally-an-arduino-library-for-eagle

Markus

So you just want to make a generic board template on which to base your own board which will will plug into an Arduino?

If that's the case just delete the ATMEGA2560 from the schematics, nothing you have said gives any reason for it still to be there as far as i can see.

Definitely would look into it! Thanks

Definitely would look into it! Thanks