Can't get GND and V- to show on board diagram.

First off, I just want to thank anyone for any help the community could offer. So, thank you.

Second, let me show you up front the schematic I am trying to build from:

I am trying to modify this schematic so that the LED String can be remotely wired via a 2-screw terminal block, and the GND, --, and +12V all go into a 3-screw terminal block.

So essentially this:

What is happening, when I try to net any of the components to multiple points, a window (Connect Net Segment) pops up forcing me to choose only 1 point to link to, so when I switch from schematic builder to board builder, the airlines vanish.

I'll attach the .sch file if anyone wants to see for themselves and possibly point something out.

Here's what I have on the schematics screen:

I have attempted to read through the manuals, but honestly, I'm not exactly sure what even to look for. Your help is greatly appreciated.

Attachments:

PWM.sch.zip

0 huayuliang over 15 years ago in reply to e14 Contributor

some thing you should know, one net only can have only one name, that is label in EAGLE.
it is not allowed connect two or more supply on one net.
if you need place some comment on sheet, you should use Text command.
Perhaps you misunderstood "net" or confused two thing.

so though the GND and - is same net, you can only use one name (or label in EAGLE).

in the original figure, there isn't a -12V net, maybe you means that is - net. but there is already a GND net, no need other name.

so you only need a two terminal connector, not a three terminal connector.
I modified your schematic, show in below：
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 e14 Contributor over 15 years ago in reply to huayuliang

I was just trying to use supplies that closest match the circuit I was working from.

I know the GND and - are connected, the problem is, when I connect the GND to the the - net, it makes me define the whole net to one or the other, and when I switch to board view, whichever one was not defined vanishes.

Here's the original site I got the circuit diagram from: http://www.reuk.co.uk/LED-Dimmer-Circuit.htm

... Actually I just think I figured out a work around. Instead of trying to figure out supplies and fight the computer on this, I can just run the lines directly to the ports on the blocks... Though I would still like to try and figure out how to properly make the circuit work.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel
0 huayuliang over 15 years ago

Why did you add a -12V supply?

As you drawn in the second image, the GND and - is connect together.
Cancel
Vote Up 0 Vote Down

Sign in to reply

Verify Answer

Cancel