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How to place a simple pad in Schematic capture?
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Zoltán Bíró 4 years ago
Sometimes you need that a track to get ended in a simple pad. By example you want to connect a buzzer or other external element to the PCB using a wire soldered to the respective pad. Or, let me give a better example: if _Arduino Nano _was designed in EasyEDA it would have exactly 30 of such simple pads on across the long edges of the board (speaking about no header version). But I cannot find a direct way to do this. * If you use the _Pin_ wiring tool you’ll end up in an _Unfinished net_  error. * The _Net Port_ is for another purpose, as far as I know. * If you place a fake component like PINHD-1X1 (which ultimately has a single pad as footprint) you’ll find unnecessary items in the _Bill of materials._ So, is there s correct and direct method for this, not just an indirect workaround with specific weaknesses? I simply don’t believe I would be the first person who faces this problem.
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andyfierman 4 years ago
The correct way to do this is to place a single pin connector in the schematic and then set the **Add into BOM** attribute (in the right hand panel) to **No**. This is explained in the Appendix of (2.3) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)
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Zoltán Bíró 4 years ago
@andyfierman Well, this is still just a workaround, as the ‘single pin connector’ is indeed a connector, not just a hole (that is, it’s still a ‘lie’). Though I should admit, it works, so thanks. But I’m still shocked why that a trivial thing has no direct solution, either in EasyEDA or in other CAD software. 😁
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andyfierman 4 years ago
@zoltan.studiorip, That's because it is not a workaround. That is how it is done in all EDA tools. In (2.2) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a) the idea is presented that "If it is on - or forms an integral part of - the PCB then it must be in the Schematic". and the explanation in (2.3) in the above linked document explains the possible situations and how they are resolved. You could just put a pad or even a hole in the board and set it to be through-plated (or not as you require) but the risk then is that when you do Update PCB... it will get ripped out because it is not represented in the Schematic from which you are updating. You also do not get the copper around a hole exposed unless you manually set it to be exposed whereas a pad automatically exposes the copper round it to make a solderable area.
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Zoltán Bíró 4 years ago
@andyfierman Yes, perfectly agree, but a pad terminal should be a built-in wiring tool in EasyEDA rather than a user-contributed part. Which is actually not even a naked pad, rather a connector component. Not the same! I don’t say it’s not a perfectly workable workaround. But not a clean, elegant solution.
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mrtom528 4 years ago
@zoltan.studiorip > If you place a fake component like PINHD-1X1 .... you’ll find unnecessary items in the _Bill of materials._ Choose the option to exclude the component from the BOM... ![NOT_IN_BOM.png](//image.easyeda.com/pullimage/7UepWoSVmrpRUwu1TzyEyXk3KMzvZQ1AAF4UKnSv.png) Regards.
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andyfierman 4 years ago
"...a pad terminal should be a built-in wiring tool in EasyEDA rather than a user-contributed part." There is a single pin header symbol that you can use from the EELib or the System library: ![image.png](//image.easyeda.com/pullimage/kKRDD3TF9tn6ACmISgbTNINjcUD5d9OTcgvbBkq4.png) and there are others in the System library. No matter what symbol you use in the schematic you will have to assign a footprint to it in order to get the appropriate sized through-hole and solder annulus dimensions to suit the wire that you wish to solder into it. If you feel strongly about this then you could either create a collection of single plated though hole pads with a range of hole and annulus diameters or you could raise a Feature Request asking for a wiring pad tool to be added.
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andyfierman 4 years ago
@zoltan.studiorip, I have added a selection of wire terminal pads to the User Contributed library. I may add them to the System library at some point. Please search for: WIRE\_PAD\_PTH\_ :)
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bwinter 4 years ago
I too, have struggled with this--so good to see it answered and explained.
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andyfierman 4 years ago
@bwinter, This is one of the things that's covered in (2.2) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a) which is why we recommend our users to read it before getting too heavily involved in a big project. Even if people don't remember it all, at least having seen that a particular piece of information or a hint exists, it gives that little nudge at the back of the mind of an "I'm sure I've seen something about that in one of those documents" moment. :)
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bwinter 4 years ago
Yeah, I see your link....and then jumping to (2)....then that jumps me to (2.2)...then that jumps me to another document (where the section-numbers seem to be broke for me, so hard to call-out a specific section).  Even after reading that, I still wouldn't have understood what needed to be done (until I saw it explained in this thread).
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bwinter 4 years ago
Actually, just testing it out now--I'm still now quite getting it.  I did create a pin (from the wiring tools) in my schematic (and connected it appropriately).  However, there is no 'Add to BOM' option with this newly-created pin.  Nor does this pin appear when I save and convert-to-pcb.
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andyfierman 4 years ago
@bwinter, I have added "..., pads for wires soldered directly to the PCB, ..." to the sections: [**\#\# What is Schematic Capture and why does it matter? 5**](https://docs.google.com/document/d/1CU7RuPyFlSZPzWBN-YZ0x87xeAB4xpLdLaIsUwhLj_M/edit#heading=h.gncatwppkdil) [**\#\#\# Show all the elements that are to be mounted on or form an integral part of the PCB\. 6**](https://docs.google.com/document/d/1CU7RuPyFlSZPzWBN-YZ0x87xeAB4xpLdLaIsUwhLj_M/edit#heading=h.6k7tyj3eynso) of: [**How to Design PCBs**](https://docs.google.com/document/d/1CU7RuPyFlSZPzWBN-YZ0x87xeAB4xpLdLaIsUwhLj_M/edit?usp=sharing) and the example projects in: [\#\# Appendix A: How to deal with Off\-PCB parts\. 26](https://docs.google.com/document/d/1CU7RuPyFlSZPzWBN-YZ0x87xeAB4xpLdLaIsUwhLj_M/edit#heading=h.xxt5yo1ar0j6) the section: **[\#\#\#\# Using the \*\*Convert to PCB\*\* and \*\*Add into BoM\*\* attributes\. 28](https://docs.google.com/document/d/1CU7RuPyFlSZPzWBN-YZ0x87xeAB4xpLdLaIsUwhLj_M/edit#heading=h.2ack7sa072qi)** demonstrates the use of a connector to create a footprint on the PCB which is converted to PCB but which is not then included in the BOM so the footprint provides just the pads or wire terminations. Admittedly the project numbers do not follow the 01, 02a, 02b, 03 and 04 sequence numbers of the but that is a feature of how the original url of a projects cannot be edited. I have now changed the project links so that they are called by names. "...I did create a pin (from the wiring tools)..." "... there is no 'Add to BOM' option with this newly-created pin.  Nor does this pin appear when I save and convert-to-pcb." That is because what you placed in your schematic is a net name label/flag/port and not a connector pin I described in my post above: ![image.png](//image.easyeda.com/pullimage/RSuxRJYSMzYDCng656yDyDwMBfZkuur7VlZa08kj.png) ![image.png](//image.easyeda.com/pullimage/0jAsLgKAvHo8rUIMCbgMZ6EOzAfq0exegmcWRupu.png)
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