- Thread Starter
- #41
You're still not showing the signal grounds for inputs and outputs. I would keep the load resistors at something like 100K or greater since the inactivated contacts are going to be loading the signal lines for the input which is being used at the time. It is important that you place the grounds since if they are not on the schematic, they are not going to be generated when you make the Gerbers. Each component (even eyelets) must have an associated footprint so the proper holes and silk screen can be generated for each component. I don't know what layout program you are using (I use Altium), but you should get familiar with the protocols for making boards so that it goes smoothly in the future.
This is a very simple audio circuit schematic showing signal grounds.
View attachment 156460
Thanks, I'll revisit this tomorrow. I'm using KiCad to make my drawings and to do the PCB design. It's open source and thus free, but I'm sure not nearly as advanced as Altium.
Edit: Ah, I see what you mean now, duh. Each input should really be a 4 port terminal block, In/Out for L and In/Out for R. And same for the output. And then make sure the Out is also to ground.
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