Hello
I am trying to construct a simple EQ based on a guitar effects pedal design.
I have some questions about the design, layout, and a bit about using EAGLE. I appreciate any tips you may have. I will try to be descriptive to make it easy for you to provide help
The schematic I am going by is below. For completeness, I have also included my eagle files, though these may not be necessary (unless someone wants to check them out!). There is also a screenshot of both, to save you the effort of downloading and loading the files.
I have followed the schematic exactly and built the file in the CAD program. I have replaced the potentiometers with just pads so that I can wire them off-board. I have also included bypass caps for good measure, though I am not sure if I've put them on the schematic properly (according to good practices).
Question: Does my off-board-component strategy seem sensible?
Question: Is my use of bypass capacitors appropriate?
Also, I am planning on running this from a dual 9V supply, so I have provided pads to wire in the battery connectors (offboard), and pads to wire in a switch. The switch is a DPST and makes two connections, one for +V and one for -V, and the middle "ground" is left connected.
Question: Is my use of a DPST switch appropriate here?
Question: Is there a way to use an SPST here?
And finally, on part placement and routing. I have spent a couple hours moving components around, trying to find an "optimal" positioning, but I'm kind of clueless here. Beyond trying to put parts near where they connect, I am not sure what to do. So far every auto-route I have tried only gets around 70% of the traces routed.
Q: Any tips on part placing and routing?
Q: If I have left-over air wires and want to put flying jumpers (or real air wires, whatever they are called), is there a way to provide for a place for them to attach, or do I just kinda tack them on to existing pads and legs?
I hope this post isn't too unwieldy, please throw in whatever info you can.
I am trying to construct a simple EQ based on a guitar effects pedal design.
I have some questions about the design, layout, and a bit about using EAGLE. I appreciate any tips you may have. I will try to be descriptive to make it easy for you to provide help
The schematic I am going by is below. For completeness, I have also included my eagle files, though these may not be necessary (unless someone wants to check them out!). There is also a screenshot of both, to save you the effort of downloading and loading the files.
I have followed the schematic exactly and built the file in the CAD program. I have replaced the potentiometers with just pads so that I can wire them off-board. I have also included bypass caps for good measure, though I am not sure if I've put them on the schematic properly (according to good practices).
Question: Does my off-board-component strategy seem sensible?
Question: Is my use of bypass capacitors appropriate?
Also, I am planning on running this from a dual 9V supply, so I have provided pads to wire in the battery connectors (offboard), and pads to wire in a switch. The switch is a DPST and makes two connections, one for +V and one for -V, and the middle "ground" is left connected.
Question: Is my use of a DPST switch appropriate here?
Question: Is there a way to use an SPST here?
And finally, on part placement and routing. I have spent a couple hours moving components around, trying to find an "optimal" positioning, but I'm kind of clueless here. Beyond trying to put parts near where they connect, I am not sure what to do. So far every auto-route I have tried only gets around 70% of the traces routed.
Q: Any tips on part placing and routing?
Q: If I have left-over air wires and want to put flying jumpers (or real air wires, whatever they are called), is there a way to provide for a place for them to attach, or do I just kinda tack them on to existing pads and legs?
I hope this post isn't too unwieldy, please throw in whatever info you can.
Attachments
-
144.2 KB Views: 115
-
280.5 KB Views: 87
-
14.6 KB Views: 360