Hi guys,
My colleague is going to make some cmoys for kids/teens in his church.
He asked me if I can find a factory to make at least 30 ~ 50 cmoy PCBs
so that he can assembling the cmoy in a waterline fashion.
I have layout (copy and paste from the internet) the PCB with Eagle.
I am not an EE, I only use the autoroute function. I am looking for your help.
Here are some questions:
1. Please comment on the attached schematic and PCB layout. Is there anything that need changes or improvement?
2. each time I replace or re-allocate the compoents, I use autoroute to set the wire.
However, the width of the wire will change to a very small value. How can I set a default width of the signal wire?
3. Any suggestion of factory for fabricating 30 ~ 50 PCBs?
Thank you
Arthur
My colleague is going to make some cmoys for kids/teens in his church.
He asked me if I can find a factory to make at least 30 ~ 50 cmoy PCBs
so that he can assembling the cmoy in a waterline fashion.
I have layout (copy and paste from the internet) the PCB with Eagle.
I am not an EE, I only use the autoroute function. I am looking for your help.
Here are some questions:
1. Please comment on the attached schematic and PCB layout. Is there anything that need changes or improvement?
2. each time I replace or re-allocate the compoents, I use autoroute to set the wire.
However, the width of the wire will change to a very small value. How can I set a default width of the signal wire?
3. Any suggestion of factory for fabricating 30 ~ 50 PCBs?
Thank you
Arthur
PCB Prototypes should do.
GO to "PCB production". If it is something like 25x25mm you will get the number you need for slightly over $100
GO to "PCB production". If it is something like 25x25mm you will get the number you need for slightly over $100
Sergey,
Thank you for your prompt reply.
The linked site is very informative.
It quoted price suits our budget too.
OK, I had a look.
The schematic is fine.
The board layout is awful.
The first place to start is the board size.
Does the board have to fit in a case?
What size does it need to be to fit the case
properly? Make the "Dimension" that size.
The board house will use the "Dimension" layer
to cut the outline of the board.
Next, arrange your components on the board keeping
in mind how the signals flow through them and keeping
the traces between them as short as practical.
You also have a nice ground plane, but it is not attached to
anything. You have to "Name" it the same as your ground net
in order for it to attach. That will clean up half of your wiring
right from the start.
Right now, the components just seem to be placed on the
board in a rather haphazard fashion. Work on your component
placement and post the result. If the component placement
is good, the trace layout will be a breeze.
Good luck!
The schematic is fine.
The board layout is awful.
The first place to start is the board size.
Does the board have to fit in a case?
What size does it need to be to fit the case
properly? Make the "Dimension" that size.
The board house will use the "Dimension" layer
to cut the outline of the board.
Next, arrange your components on the board keeping
in mind how the signals flow through them and keeping
the traces between them as short as practical.
You also have a nice ground plane, but it is not attached to
anything. You have to "Name" it the same as your ground net
in order for it to attach. That will clean up half of your wiring
right from the start.
Right now, the components just seem to be placed on the
board in a rather haphazard fashion. Work on your component
placement and post the result. If the component placement
is good, the trace layout will be a breeze.
Good luck!
Avro,
thank you for the input.
Yup, the PCB has to be fitted into an aluminium case.
The width of the case is 7cm and the slot is about 6cm.
Thus, we can't change the width. The length can be change as needed.
I am new to EAGLE. I will study the EAGLE tutorial and learn about layout and putting in a ground plane.
You are right, I have not planned carefully about component placement.
I only put all of them in any space available in a random fashion.
There is a wiring mistake in the last board.
The led is always switched on.
The position of input, output and pot are relocated as specified by Avro.
In order to put the PCB into a candy can, I try to make it as small as possible.
When DRC was run, there are errors of "Dimension".
Some parts of the input /output jack were highlight in red.
What does it mean?
The led is always switched on.
The position of input, output and pot are relocated as specified by Avro.
In order to put the PCB into a candy can, I try to make it as small as possible.
When DRC was run, there are errors of "Dimension".
Some parts of the input /output jack were highlight in red.
What does it mean?
Attachments
Last edited:
That doesn't look too bad...much better than the first attempt.
What I said earlier though was to put the output jack on the
left, volume pot in the middle and input jack on the right.
That usually results in the best layout.
Can you post the layouts with 600 dpi resolution?
Their are easier to read when they are bigger.
Good job so far!
What I said earlier though was to put the output jack on the
left, volume pot in the middle and input jack on the right.
That usually results in the best layout.
Can you post the layouts with 600 dpi resolution?
Their are easier to read when they are bigger.
Good job so far!
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