You need to use EasyEDA editor to create some projects before publishing
Part problem, what is going on with parts?
2777 16
Joseph Massimino 6 years ago
So I search for 4046 , which is a VCO chip, and I found the through hole version, but the version I have is the SMD. So that goes by the number PW4046, and there is one, but it is not matching the actual part, so somone made it and arranged the pin numbers the way they wanted them, and left some off that I need. So I tried to edit the part and change the pin numbers to what they would be on the actual part, and the labels to go along.  I have to say that my experience with the software tells me that I am headed for misery, in that I am leaving room for some terrible result in my board. So this brings me to another issue, parts that I used on previous boards could not be found, so I had to resort to opening old projects and copying the part I need, and making 5 or 6 and changing the values and part numbers to go along with the way I am using them. So what the heck is going on with parts that were once in the system, but no longer can be found?  The parts I copied were jelly bean parts, 1206 capacitors and resistors, but this 4046 chip is new to my design, and it has to be right. What can I do to edit the part I have so it shows all the proper pins where they belong?  EasyEDA has some big problems with parts, don't they try to make the list accurate and have as many parts as possible?  I use to be able to find parts from Aliexpress, and other places, and now I don't find much of anything. Yes, I have logged in, and yes I have been using the software for a lot of hours, so I am sure something changed in the way it is finding parts.  This one issue is costing me entire days of trying to fix this one part.  This is the image of the chip that I found that was edited by someone else, notice that the pins are out of order, where they should start on the left with pin 1 at the top, and directly across the last pin is 16, but they are not all in order the way the chip would be normally. Is there a way for me to either fix this chip, or create one of my own, since I have been finding to many problems in using parts from the library, some are just missing, and others are not there, or they are wrong.  When I edit this chip, I can change the location of the pins, I can only edit what the pins say, as in what pin number it is and what it is called. There are other pins on the chip that simply don't show up, and I see no way to add them.  The ideal situation would be for me to create the 16 pin blank and edit all the pins for my own use. UPDATE:  I did find myself in a part editor, and after I edited the part to look exactly the way I needed, I saw not way to put it in my schematic, and I lost it. So this is getting old fast.  Once I get a blank part and edit it, how do I save it to my own parts list, and get it into my schematic so I can update my PCB with the correct part? ![4046PW.gif](//image.easyeda.com/pullimage/PHOE8GAkdaj2GnZh17jpdAYAA1a7dTA0ryvxssc8.gif)
Comments
andyfierman 6 years ago
The 4046PW part in the library had a number of errors in it. It has now been replaced by a fully described part: Shift+F and search for 74HCT4046AD,118 Please study the symbol carefully then you can edit it to make other versions if you require.~~~~
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Joseph Massimino 6 years ago
I saw that, but I could not add it to my schematic. I did modify the part, and paste it into my schematic, but when I saved, and ran update, the PCB did not get the part. Can you say why?  It is in my schmatic, and just can't go into my PCB as an update.
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Joseph Massimino 6 years ago
I could edit, i did it a lot, but i cant get anything i edit into my schematic, and when i did get one edit into my schematic , the save and update to pcb was minus that one part. The schematic working should be the hard part, not getting the right parts to look correct, and make placing into a schematic so it will go to the circuit board.  I've learned to deal with so many things in this software, but each time new problems surface.  I can imagine how much you work with all of this to know your way around it so well.
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Joseph Massimino 6 years ago
The problem with that part is that some pins are missing, and  I can only edit what I see in the schematic, anytime I get into any other editor, I can't get the part I edit into my schematic.
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Joseph Massimino 6 years ago
I added the part with the unusual pin spacing, and edited the schematic to use it, so it all looks good on the PCB, and that is all that really matters.  I have to wait on the meter to arrive, then decide how the board will mount to the meter. Ideally, the board could mount to the rear of the meter, making it all one part.  Then I have to make the second part of the board, with 20db attenuators and dpdt switch to kick it in and out. My last order of 800 boards shipped, they all look good in the Gerber files, so they should all be good. Thanks for putting up with all my aggravation in assisting me.  I'm going to search for better gerber making tools for my next project. They are getting increasingly more complicated, and to have so many problems with the simple boards just isn't doing it for me.
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andyfierman 6 years ago
My intention was that you would simply replace your 4046 symbol with the new 74HCT4046AD,118 part and that would be it, job done. You can always use the  Schematic Library Wizard to create schematic symbols directly in your schematic. These can then be copied and pasted around the schematic they're created in and pasted into other schematics. If you create a special project and paste them into a schematic sheet then Voila! you have your own private library of schematic symbols. To get the full benefit of properly contructed symbols you can use the Schematic Lib Editor. This prompts you to enter most of the important information needed to create a properly defined schematic symbolwhich will then be publicly available in the User Contributed section. It is also much easier to edit symbols created using the Scheatic Lib Editor whether they are your own or copies of any others in the Libraries (including most of those in the EELib except the Supply flags). "I'm going to search for better gerber making tools for my next project." My impression from your posts is that you might find it helpful to take a break from your current big project developments and go back to a very simple project (it doesn't have to do anything special: maybe just a 555 timer, a 2 transistor astable or use a 74HC14 to make a clock source driving 4 bit counter and leds) just to learn the basics of schematic capture and PCD design using EasyEDA. If you follow the Design Flow in the Tutorial and create footprints using the PCB Lib Editor and then create your own symbols using the Schematic Lib Editor, you will have pretty much mastered the major elements of using EasyEDA. After that, if you really are not comfortable with or are still struggling to work with EasyEDA you could try KiCad or possibly a Windows port of gEDA (both are Free and Open Source) otherwise you may find that you have to pay for your EDA tools if you still want the freedom of being able to work on private projects of unlimited complexity and to send your Gerber files anywhere that you want for fabrication. If you go down that route, bear in mind that you will also have a new learning curve to scramble up with a different but maybe - because learning to use an EDA tool is never truly easy - just as frustrating a set of obstacles on the way.
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Joseph Massimino 6 years ago
Thanks for all your advice, it is very good advice and I will take some, if not all of it. I do however have one IC that has all 8 pins on the PCB, but only shows one side of the two opamps, plus power pin on the schematic. I need to short the unused opamp, and ground one pin. Will the backfill of copper short any pin of a surface mounted part that I did not define, or should I ground it to something close by that is grounded on the PCB alone?
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andyfierman 6 years ago
I already answered this question: [https://easyeda.com/forum/topic/Components-can-t-be-found-that-I-have-used-on-other-boards-what-s-going-on-cee1e291324f438c9d62930ade91ba4c](https://easyeda.com/forum/topic/Components-can-t-be-found-that-I-have-used-on-other-boards-what-s-going-on-cee1e291324f438c9d62930ade91ba4c) * Don't try to take shortcuts by omitting the second device of a dual from the schematic: you are storing up trouble for when you try to convert the schematic to a PCB. For the unused opamp in the dual device, the safest way to "park" it is to connect the inverting input to the output pin and connect the non-inverting input pin to ground.
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Joseph Massimino 6 years ago
The problem I had when adding the second part of the chip, was that it was not included in the PCB in a way that made sense. Why can't the entire chip be added at once, then split up if it needs be, with the software keeping track of the continuity of the part. This is what is causing me to ask these questions, the parts have no continuity when they go to the PCB image.
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Joseph Massimino 6 years ago
@andyfierman  I should also mention the I was able to put a small trace across two pins of the chip that needed to be jumpered, it was running on other pin to ground that I was having a little difficulty with.  So even though I use only one part of the chip, the entire chips shows up on the PCB when I lay it out.
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Joseph Massimino 6 years ago
Ok, I added the other half of the chip, then added it to the PCB , it adds a whole other chip, same size as the first part of the chip, so that means I have to make space on the PCB for another chip, but there isn't two chips, there is only one chip.  Now so you see the problem I am having?
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Joseph Massimino 6 years ago
I think I figured it out. When I examined both parts, one was U2-1, but the other was some higher numbered chip -2, so I changed it to U2-2, and when I added it to my schematic, it did not add another chip. I will try to edit the second part of the chip and update the PCB and see if it does what ai need.
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Joseph Massimino 6 years ago
Ok, that all looked like it worked, but one last question on it. The pin I grounded, how can I tell if it is grounded on the PCB. It does not show any kind of markings to let me know it is grounded?
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andyfierman 6 years ago
"how can I tell if it is grounded on the PCB. It does not show any kind of markings to let me know it is grounded?" I don't understand the problem. If you have ground net in the schematic and you have correctly either netlabelled it as GND or 0V or have attached a ground symbol from the wiring panel or the EElib and you have grounded the relevant pins on the ic then they will be connected in both the schematic and the PCB. Please post screenshots of the schematic and the PCB. It is questions like this that prompted me to suggest that you go right back to basics with a simple project because you are asking about things that are fundamental aspects of using not just EasyEDA but any schematic capture and PCB design EDA tool suite. By your own admission, you have already blown 800 PCBs because you launched into a project without understanding all the necessary steps to ensure a correct design and you did not order a small number of prototype boards first to check your design out. Take some time out to learn this basic stuff and then you might help yourself to avoid another expensive mistake. :)
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Joseph Massimino 6 years ago
Sorry, it was not 800 boards I lost , it was 100 on my first order, which I have had many. You are correct, I was following the wrong pin, and when I realized that, I followed the correct pin to the ground of a electrolytic capacitor. So it all looks right now.   Any further work on this project is dependent on some switches and a meter I have on order. I hope to fit the board to the meter, and the switch is part of a attenuator circuit, rather simple, made with SMD parts, but i will make it a seperate board, and place the order all at once to save on shipping. I was looking at all of my orders and noticed that they charged me a few dollars less to ship 800 boards, than they previously  charged me on 400 boards. All about the same size and copper density. So that puzzles me. As you suggested, I sure would like to make one board and test this schematic before  I make a bunch.  I once took my gerber files and noticed that when I printed them, the parts fit it perfectly. So there may be a way to print both sides and make one board for myself to test it. Each time I take on a new project, there is something that comes up that I have to learn in order to get it right. My next learning experience will be when I add to big holes, and solder pads to the board for the meter, then to crunch the parts down on the Rf section so they are as close as I can make them.  I'm in no rush, i just hate spending a day trying to figure out one issue.  So far, so good.  I did adopt the process of tracing all circuits to make the schematic  on the Gerber views before attempting to order boards. They do have a problem with the software in that it produces a blank DRC list no matter what is done to get it to go away. When I submitted the board to be made, and verified the Gerber files were correct , I included a note about the blank DRC list. When they saw the note, they checked it and said that there were no DRC errors on my board.  So I count that as a bug in the system of checking for DRC errors. I purposely created one DRC error and checked the board, and it did put it in the list, then i fixed it, and checked again, and I got a DRC error with nothing listed.  So nobody can tell me that is all normal.  It just keeps me on my toes.  Thanks for all your input.
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andyfierman 6 years ago
Actually I meant just order the minimum quantity of PCBs to build a couple of prototypes rather than DIYing them. Then there's no room for error because you are building using the real PCB. If these prototypes work then you have some spare PCBs. If you find a mistake for whatever reason then you haven't really wasted the cost of the prototype boards and you have saved the DIY time spent that you can spend on something else. If you get into multilayer PCBs then you'll have to do it that way anyway.
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