How do I restore symbol?

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1

I’m working through the Eagle tutorial 4.1. Placing LM555N symbol onto the schematic board using the add command, I activate the drop command in the Add screen and it seems I’ve deleted the symbol. How do I restore this symbol? I’ve been all over the help section with not luck. I really don’t need this symbol, but I do need to know how to do this function.

thanks

bill

2

Use the “unsmash” command to restore. Select smash from the tool bar and hold down SHIFT when clicking on the part. That will restore the symbol’s to their original placement.

3

Thanks for the repy Vraz, Sorry I didn’t explain my problem better. I’m not trying to move the symbol around on the board. My problem is with the LM555N displayed on the Add screen I hit the drop button and literally lost the LM555N symbol from the linear.lbr list(where is was listed before). Now I can not find the LM555N symbol listed anywhere. I have no problem with moving symbols around on the schematic board.

I really need to know just exactly what the drop button does. What is its function? Does it delete symbols completely out of the library files? There is no reference to the drop function in the help files.

thanks

bill

4

wdavis:
I really need to know just exactly what the drop button does. What is its function? Does it delete symbols completely out of the library files?

Yep. Bit of a silly feature, really. You can re-download the library file from EAGLE's website to restore the deleted part.

There is no reference to the drop function in the help files.

Yeah, the EAGLE help files are a bit of a let-down. For example, I've been looking for a layer reference for all those layers. What the hell is tKeepout? If anyone finds an EAGLE layer reference somewhere, let me know...
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roach, thanks for the reply. I’ve hadn’t reach the tkeepout yet, thanks for heads up. I’ll check the Eagle site for a update download. I might not be allowed since I’m using a trial ver of this software.

bill

6

doesn’t tkeepout pretty much define what it is? you cant route there. for example, you have a metal encased connector (USB A, for example). you sure don’t want traces routed under it because it might short them. with out a keepout layer, there is no way to keep the autorouter away.

7

Yeah. My point was more that there is nowhere (that I know of) that lists all these layers and what they mean. What about tRestrict? tCream? tGlue? Not being a PCB-layout professional, some of these terms are meaningless to me without some sort of explanation…