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Am I in the right direction?

icemanxp300

Hi, so 3 years ago I managed to put together a very basic board. I am now working on something a bit more involved. Just wondering if what I am doing will work and I am confused on a few things as well.

 

First this board will not be perfectly rectangular it has notches in 2 corners and a few in the sides. I read that making a polygon and selecting cut-out will work in removing these unwanted areas. I used the miter option to round a few corners. I still have a few corners that need rounded but I cant do a polygon for those. Well they are part of the polygon I put in for what I want cut but the corner going to the pcb is what needs rounded. See bottom corners.

 

Second this board requires edge connectors which I drew in with wires. These are to be on both top and bottom in equal spots. I actually just copied the entire group and pasted up a bit higher and then changed them all to bottom and then lowered them in place and then adjusted them. The main thing I am not liking here is my components (header pins) I put in do not change sides when I view bottom. I understand it is showing me "the layers". However I really need these header pins to accurately show me what they will look like on the bottom w/those bottom edge pins. I need to connect wire traces from both sides of those header pins.

 

Some traces get routed from top side header pins to top edge connectors but most pins get routed from bottom side header pins to edge connectors. I used header pins because it was all I could find that matches the hole sizes for the parts I am using. The edge connectors will have to be gold plated as well.

 

Will I have to run wires from these components as a bottom side looking at the components in reverse?

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  • Seriously If you are just going to be mean then just don't reply. I am NOT being lazy. I simply can't find ANYTHING in these libraries so I am using what I can find that works.  I don't know how to make a part in Eagle. Plus I have read numerous times people say if you can't find what you are looking for find something that works. So that is what I did! So for other people it's ok to use other parts but for me I am just being lazy if I use what I can find. Whatever.

     

     

    Here are my components list!

     

    m27c160 42 pin eprom

    AT9366A or AT93C86A or an is93c46-3p 8 pin serial eeprom

    0.1uF 104 capacitors.

     

     

    I really don't see why it makes me lazier to not design a part so eagle knows exactly what I want as compared to me using parts that 100% match the dimensions I need and just running the traces manually. Even if I did make a part Eagle is NOT going to know where those pins traces should go. I will have to manually route them all anyhow so what's the point of making a part up to begin with?

     

     

    I have the blueprints for what all the dimensions should be, the size of board, where cut-outs go, where holes are drilled, size of holes, and edges that need rounded/beveled. Where components go and so forth. I as well know the exact components I need to use.

Reply

  • Seriously If you are just going to be mean then just don't reply. I am NOT being lazy. I simply can't find ANYTHING in these libraries so I am using what I can find that works.  I don't know how to make a part in Eagle. Plus I have read numerous times people say if you can't find what you are looking for find something that works. So that is what I did! So for other people it's ok to use other parts but for me I am just being lazy if I use what I can find. Whatever.

     

     

    Here are my components list!

     

    m27c160 42 pin eprom

    AT9366A or AT93C86A or an is93c46-3p 8 pin serial eeprom

    0.1uF 104 capacitors.

     

     

    I really don't see why it makes me lazier to not design a part so eagle knows exactly what I want as compared to me using parts that 100% match the dimensions I need and just running the traces manually. Even if I did make a part Eagle is NOT going to know where those pins traces should go. I will have to manually route them all anyhow so what's the point of making a part up to begin with?

     

     

    I have the blueprints for what all the dimensions should be, the size of board, where cut-outs go, where holes are drilled, size of holes, and edges that need rounded/beveled. Where components go and so forth. I as well know the exact components I need to use.

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  • in reply to icemanxp300

    On 21/12/18 15:26, Gregory Sprague wrote:

    I really don't see why it makes me lazier to not design a part so eagle knows exactly what I want as compared to me using parts that 100% match the dimensions I need and just running the traces manually.

     

    Because the point of designing electronics with an eCAD tool is to

    design what you intend, not to fudge up something vaguely random.

     

    If you read someone saying "it's OK to use something similar" then what

    they meant was - you need a Siemens BC548JX in TO92 but all you can find

    is a Texas BC548A in TO 92, with the same pin-out. Sure, then, that's

    close enough. If they really mean "you want a 7432 but drawing a 7400 is

    close enough" then they're talking bollocks and should be ignored. But

    what you're doing is nowhere near that close!

     

    I'm not being mean. I'm stressing the importance of doing the whole job

    rather than trying to cut corners. Learn how to use the library editor!

    It's really not that hard. The footprints you want are all available in

    the ref-packages library for you to copy into your new library. The

    symbols for EPROMs and EEPROMS are trivial to draw. The capacitors you

    can just use directly from the RCL library that ships with Eagle.

    (Actually I'm pretty sure there's a 93C46 in a free-to-download library

    somewhere).

     

    It's great that you think you know what you're doing but I say again -

    USE THE TOOL. It's there to help you. If you refuse to accept that help,

    what's the point asking on here for our help?

     

  • in reply to icemanxp300

    On 21/12/18 15:26, Gregory Sprague wrote:

    I really don't see why it makes me lazier to not design a part so eagle knows exactly what I want as compared to me using parts that 100% match the dimensions I need and just running the traces manually.

     

    Because the point of designing electronics with an eCAD tool is to

    design what you intend, not to fudge up something vaguely random.

     

    If you read someone saying "it's OK to use something similar" then what

    they meant was - you need a Siemens BC548JX in TO92 but all you can find

    is a Texas BC548A in TO 92, with the same pin-out. Sure, then, that's

    close enough. If they really mean "you want a 7432 but drawing a 7400 is

    close enough" then they're talking bollocks and should be ignored. But

    what you're doing is nowhere near that close!

     

    I'm not being mean. I'm stressing the importance of doing the whole job

    rather than trying to cut corners. Learn how to use the library editor!

    It's really not that hard. The footprints you want are all available in

    the ref-packages library for you to copy into your new library. The

    symbols for EPROMs and EEPROMS are trivial to draw. The capacitors you

    can just use directly from the RCL library that ships with Eagle.

    (Actually I'm pretty sure there's a 93C46 in a free-to-download library

    somewhere).

     

    It's great that you think you know what you're doing but I say again -

    USE THE TOOL. It's there to help you. If you refuse to accept that help,

    what's the point asking on here for our help?