kicad-developers team mailing list archive

[Andy Peters <devel@xxxxxxxxx>]

> On Feb 5, 2016, at 10:35 AM, Thor-Arne <lp@xxxxxxxxxxxxx> wrote:
> 
> If I change a value I re-generate the project so the change is inluded in all the files, schematic, netlist, board.

What if your design has a single PCB which can be used in several circuit configurations?  Perhaps you’ve built the board to support four ADCs but some product configurations require only two channels. In this case you simply don’t stuff the other two channels. Perhaps channel 1 needs a different gain from channel 0, and you make that change by altering resistor values? 

The board doesn’t change, just the components you choose to stuff. 

In the Altium world, this sort of thing is called a “Variant,” and it has no effect on the physical PCB, only the BOM. 

-a


> As for heatsinks I have symbols for that if I feel I need to indicate that in the schematic, if not I just add the heatsink footprint in pcbnew.
> 
> -----Original Message----- From: Andy Peters
> Sent: Friday, February 05, 2016 6:19 PM
> To: KiCad Developers
> Subject: Re: [Kicad-developers] Bill of Materials Generator Feedback
> 
> 
>> On Feb 5, 2016, at 10:14 AM, Thor-Arne <lp@xxxxxxxxxxxxx> wrote:
>> 
>> I disagree, I find it to be the oposite of what you are saying.
>> 
>> The BOM should be generated from within pcbnew as this is the last time you can change or add the parts on the design.
> 
> You’ve never changed a resistor or capacitor value after bringing up a first-article board?
> 
>> Also, if there are symbols on the schematic that doesn't have a footprint they have nothing to do on the list of materials that should be ordered.
> 
> What about heatsinks that attach to TO-220 packages?