TheBackShed.com

Home	JAQForum Ver 24.01
Log In or Join
Active Topics
Local Time 23:36 10 Nov 2025	Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : Microcontroller and PC projects : Diptrace Help

Author

Message

OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 1013

Posted: 09:05am 25 Jan 2018

Copy link to clipboard

Print this post

I posted this on the PCB Manufacturing forum but thought I might get help here:

I have a double sided PCB in Diptrace and I am trying to link the ground pads of the 3T regs to the copper fill on the bottom of the PCB with vias for thermal purposes. Every time I try to achieve this I get errors in the DRC. Can anyone help with the right procedure to accomplish this?

OA47

MicroBlocks

Guru

Joined: 12/05/2012
Location: Thailand
Posts: 2209

Posted: 04:28pm 25 Jan 2018

Copy link to clipboard

Print this post

If you place a via it is not connected to any net.
The way i do it is to put a bunch of via's next to the board.
Add them to the ground 'net'. (right click -> add to net)
I then place them one by one where i want them.
If you need more, just copy/paste them.

Microblocks. Build with logic.

OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 1013

Posted: 11:19pm 25 Jan 2018

Copy link to clipboard

Print this post

Thanks Jean, your advice lead me to success. My copper pour was not attached to a net, when attached all seems good.

Graeme

OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 1013

Posted: 11:45pm 25 Jan 2018

Copy link to clipboard

Print this post

My success was short lived when I connect the pour to net 0, I lose my bottom tracks so back to the drawing board.

MicroBlocks

Guru

Joined: 12/05/2012
Location: Thailand
Posts: 2209

Posted: 03:26am 26 Jan 2018

Copy link to clipboard

Print this post

Looks like your nets are not good anymore.
It can happen when you place a trace or via and you get a message if you want to combine nets or something similar.
To restore that you can synchronize your nets again with your schematics.
Under menu 'File' you choose 'Renew design from schematics'. First time you will need to choose the schematics file. After that you can use a keyboard shortcut Ctrl+Alt+U.

Microblocks. Build with logic.

Print this page

To reply to this topic, you need to log in.