Your project is private so only you can see it. Please read: [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)<br> <br> and post back with sufficient information from which to offer you some useful advice. In the meanwhile you may be interested in these LM386 projects: [https://easyeda\.com/example/Demonstrating\_the\_EasyEDA\_LM386\_spice\_subckt\_model\-pgoiAgM4m](https://easyeda.com/example/Demonstrating_the_EasyEDA_LM386_spice_subckt_model-pgoiAgM4m) [https://easyeda\.com/example/Tesseract\_Guitar\_Practice\_Amp\-MjP71jBni](https://easyeda.com/example/Tesseract_Guitar_Practice_Amp-MjP71jBni) [https://easyeda\.com/andyfierman/Voltage\_controlling\_the\_gain\_of\_an\_LM386\-cf77ec12b0da44e39d75bda9e407642c](https://easyeda.com/andyfierman/Voltage_controlling_the_gain_of_an_LM386-cf77ec12b0da44e39d75bda9e407642c)<br> <br> Thanks.

Ok thanks , but I have watched numerous videos including this one: [https://www.youtube.com/watch?v=MdcnkaAoDTE](https://www.youtube.com/watch?v=MdcnkaAoDTE) I have also googled the problem and followed the answers step by step, but when I do, I get the NET  errors with GND and VCC The project is for an Audio amplifier using a LM386, where there are 8 GND connections and 1 VCC connection. There is an input on pin3 of the LM386 and an output to a speaker on pin 5. This is the schematic I am trying to replicate: [https://www.circuitbasics.com/build-a-great-sounding-audio-amplifier-with-bass-boost-from-the-lm386/](https://www.circuitbasics.com/build-a-great-sounding-audio-amplifier-with-bass-boost-from-the-lm386/)<br> <br> I have come here as a last resort and I don't know what else you require me to do. Thanks

The connections to the 470pF capacitor (C6) in the schematics for the LM386 audio amplifier and the LM386 audio amplifier with bass boost in: [https://www.circuitbasics.com/build-a-great-sounding-audio-amplifier-with-bass-boost-from-the-lm386/](https://www.circuitbasics.com/build-a-great-sounding-audio-amplifier-with-bass-boost-from-the-lm386/)<br> <br> are wrong. Please check the schematics given in the original TI datasheet at: [https://www.ti.com/lit/gpn/lm386](https://www.ti.com/lit/gpn/lm386) (also linked to in my simulation project above). "I have come here as a last resort and I don't know what else you require me to do." Please make your project public or at least post some screenshots of it: [https://easyeda.com/forum/topic/How-to-make-a-Project-public-and-share-the-links-to-it-9f006513b84b412580910905b0281d20](https://easyeda.com/forum/topic/How-to-make-a-Project-public-and-share-the-links-to-it-9f006513b84b412580910905b0281d20)

First of all my apologies for lack of information, doh! In the link for the circuitbasics audio amplifier, it is this schematic: [https://www.circuitbasics.com/wp-content/uploads/2015/04/Build-a-Great-Sounding-Audio-Amplifier-with-Bass-Boost-from-the-LM386-Amplifier-With-Gain-Schematic.png](https://www.circuitbasics.com/wp-content/uploads/2015/04/Build-a-Great-Sounding-Audio-Amplifier-with-Bass-Boost-from-the-LM386-Amplifier-With-Gain-Schematic.png)<br> <br> As I could not get the Manage menu in the context menu when I right click on my project, I have taken a screenshot of the current project

There are several things in your schematic that need to be fixed or tidied up: * No ground connection on pin 4 of the LM386; * Spurious join dots all over the place; * No wire connections showing between several pins;  * No input connector; * No power supply connector;  * Unless assigned to the speaker symbol, you have no output connector;  * No "No Connect" green X symbol on the unconnected end of PR2; * The Design Manager is telling you that there is something wrong with one or more of your ground net flags;  * The Design Manager is telling you that there are warnings about many other connections;  * 470pF has its Prefix (a.k.a. reference designator  a.k.a. refdes) hidden. As I said above the connections to the 470pF cap, C6, in the circuit you are copying, are wrong. If you look at it you will see that C6 is shorted to ground at both ends and therefore has absolutely no effect in the circuit:  If you look at Fig 18 in: [https://www.ti.com/lit/ds/symlink/lm386.pdf](https://www.ti.com/lit/ds/symlink/lm386.pdf)<br> <br> you will see how a circuit with base boost should be configured. If you open this project: [https://easyeda\.com/example/Tesseract\_Guitar\_Practice\_Amp\-MjP71jBni](https://easyeda.com/example/Tesseract_Guitar_Practice_Amp-MjP71jBni)<br> <br> that I pointed you to, in the editor then you will see a practical (fully simulated, built and tested) design including an LM386 stage with selectable Bass (LF) or Treble (HF) boost.  It requires careful reading of the datasheet and apps note to spot but note that in this design, both inputs to the LM386 (pins 2 and 3) are AC coupled to minimise the output offset (and so preserve as much of the output swing as possible) at high gain. You cannot share a project if it's in the Desktop Client in Projects offline mode. Since this is a basic, beginners project there is no particular reason for you to be working in Projects offline mode. For more help, therefore, please do this: [https://easyeda.com/forum/topic/How-to-copy-projects-created-and-saved-in-Desktop-Client-Projects-Offline-mode-to-the-cloud-780e8ed79d474be9a36e1568f220089b](https://easyeda.com/forum/topic/How-to-copy-projects-created-and-saved-in-Desktop-Client-Projects-Offline-mode-to-the-cloud-780e8ed79d474be9a36e1568f220089b) and post back with the link to your public project. I would also strongly urge you to read (2.2), (4) and (6) 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)<br> <br> as this will show you ways to tidy up your schematic to make it easier for others to read and to spot mistakes and also to help ensure a successful outcome to your design efforts..

Ok, thanks and I appreciate what you say. Pins 2 and 4 have a GND symbol on them, and they are close to the pins. I found if I stretched the GND symbol out and or down, it threw up a GND error in Design Manager. whether it does now, I can't see it, ie no red line. The spurious join dots were created by the program when I connected a component, if that is what you refer to. I have not put in nor included a power supply connect yet, as I just wanted to see how it worked out Neither did I include an output connector for the same reason. Thanks for the schematic , but I have some questions: What do the these mean against some of the components: 10K LOG VOL= I assume it means a 10K logarithmic pot for the volume. C2 1u PAIN? INN before C15? BYP before C16? Thanks <br> <br>

@Robgh, "The spurious join dots were created by the program when I connected a component" No, they're cause by you overlapping the wire over the join node of the pin. "10K LOG VOL= I assume it means a 10K logarithmic pot for the volume. C2 1u PAIN? INN before C15? BYP before C16?" This is why we ask people to read: [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)<br> <br> The stuff you're asking about is a mixture of informative text annotations and net labelling. All of which is described in the Tutorial and in some of the other stuff linked to in the inevitable.... [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)<br> <br> and if you open the files I posted the links to in the editor rather than just looking at the pictures, you can see and play with them to explore and understand how they are constructed. This is also why we encourage people to build a simple dummy project to play about with the tools before trying to create a real and usually far more complicated and hence more frustrating project. :)

Ok, I'm going to ask a really stupid question now about adding a GND symbol to a chip pin on a schematic: I added a an LM386, then clicked on a GND symbol and placed it on pin 4, then I checked Design Manager for errors.Apart from unconnected pins there non appertaining to GND, so I then extended or stretched the GND symbol as I have seen in various videos. Then I check Design Manager again , and there is an error for GND as the stretched wire between pin4 and the GND symbol is highlighted in red. I'm on the verge of giving up now. Thanks

* What you describe is not an error: it's a warning. If you check the warning messages in the two cases that you describe, you'll see that they both issue the same warning. * The net lighting up red is not an error or warning indication: it is a locator. The only reason that the net lights up red in the second case is simply because in the first case there is no wire length to light up. * A net flag or label is not a pin: it is a net flag or label. All the warning is telling you is that the wire is only connected to a single symbol pin and if that is what you intend then that is OK. To clear that warning you just need to add a connection to a second pin. * Look at these examples:       

Ok thanks. I am now having a go at doing the schematic from the one you posted above. So far with only 5 pins connected to components or GND, there are no errors nor warnings. I have a couple of questions about the schematic: Where does the top leg of the 10k Volume pot go to. Is the headphones socket listed in the EasyEDA library, and what should I be looking for.

It sounds like you are creating a schematic from my screenshot. It's a public project and you have the link to it. If you open my schematic in the Editor in STD mode, you can see all the relevant connectivity and read off the info of each symbol or you can just copy and paste any symbol you need.

"It's a public project and you have the link to it." which you can only open if you set your Desktop Client to Team Working mode or use the online version of EasyEDA.

While your schematic is open in Desktop Client, but when I switch to Team working mode, it is not there. Also in Team Working mode non of my files are showing. So if I can't find out where the 10k pot connects to and if the headphones socket is in the library, there is no point in me carrying on with it. Thanks anyway

Since I swapped between Desktop Client and Team working, then back again, there are no parts / components in the library now!!

Oops cancel last post, got the components back, Doh!

I'm wrong: you can't open a project from a url if you're using the Desktop Client in any mode. You have to be using the Online web-based version to do that. You can save and open your own and Team projects using the Desktop Client in Team Working mode but in Projects Offline mode you can only see and access local projects. I haven't tried it but it is possible (though not simple) to open projects saved locally from the Desktop Client when in Projects Offline mode when you switch to Team Working mode in the Desktop Client or when you are using the web-based version. If you are going to use the Desktop Client, you need to read and thoroughly understand: [https://docs.easyeda.com/en/FAQ/Client/index.html](https://docs.easyeda.com/en/FAQ/Client/index.html)<br> <br>

I don't need nor want to use team working mode, as all I want is to know where the 3rd or top pin of the 10k pot goes to. I found the headphones jack in one of the libraries. Thanks

Open this link in your browser: [https://easyeda\.com/example/Tesseract\_Guitar\_Practice\_Amp\-MjP71jBni](https://easyeda.com/example/Tesseract_Guitar_Practice_Amp-MjP71jBni)<br> <br> Scroll down to: **Tesseract Guitar Practice Amp Schematic** then press the **Open** **in** **editor** button. You can then see the whole of the rest of the schematic including the fact that the input (top) end of the volume pot comes from an ac (capacitor) coupled source. And if you're wondering why both signals that end up being fed to the top end of the volume pot and the slider are ac coupled: it's to stop any DC current flow in the pot that might make the audio output crackle when it's turned.

As a newcomer, you will find it much easier to learn how you use EasyEDA if you use the web-based version since this makes it easy to open and study public projects as you are - and as a useful part of - learning how to use the tools. Once you have got up to speed then you can swap to using the Desktop Client in whichever mode you are comfortable with. At the moment, your apparent insistence on using the Desktop Client in Projects Offline mode is just making your learning experience - and that of anyone trying to help you - harder and more frustrating.

Pardon me for saying so, but on the pcb board schematic it looks like the said pin named FXMX, doesn't connect to anywhere. If that is true then all you had do it say so. Thanks

Aah, wait a minute, apologies, I looked at the wrong picture! On the schematic page I see it does go to a 51k resistor then eventually to a TL804N. I see that there are 7 blocks of schematics in a dotted frame, and it looks like a large project.

Looking at the schematic a bit more, I notice it is not the same as the part of the one you posted 4 days ago, as the 6.35mm switched 3 pole jack is on the opposite side and there  are no LM386 amplifier ICs. So in the part one you posted could you just please tell me where the top pin of the 10k Volume pot goes to.

@Robgh, Maybe it's time for tea and a bun... The screenshot I posted is from exactly the same the project as you should be looking at from the link I posted: [https://easyeda\.com/example/Tesseract\_Guitar\_Practice\_Amp\-MjP71jBni](https://easyeda.com/example/Tesseract_Guitar_Practice_Amp-MjP71jBni)<br> <br> "the 6.35mm switched 3 pole jack is on the opposite side" because there's an identical jack socket on the input side in the upper left of the schematic which also includes the on-off switch. "there  are no LM386 amplifier ICs." except for the one in the lower right of the schematic.

Ok, fair do's on the other 6.35mm jack. I've adjusted my glasses now and can see it :) So on the pcb board  the 3rd pin of RV5 marked FXMX , it shows no connection , yet on the schematic it is connected to RV4 Which is correct. Thanks

It's a 2 layer board.

Ok, that's that sorted, Now then, are all the dotted? boxes all part of the same circuit and joined together as it were.

Tesseract is basically an LM386 audio amplifier with various features and effects in front of it. The dotted boxes are there to help identify which area of the circuit represents which functional block. Of course they're connected together. That is precisely what a schematic is for: to show the connectivity of the components that make up a circuit. Again, as a beginner, it will help you a lot to read: (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) because that explains the relationship between a circuit, a schematic and a PCB which I'm not sure that you've got your head round yet but is a bit fundamental to what you're trying to achieve.