New to EasyEDA, something I don't understand
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HugoW 1 week ago
I saved the Arduino Mega circuit ([https://easyeda\.com/hot/Arduino\_Mega\_2560\-z92kCUO6o](https://easyeda.com/hot/Arduino_Mega_2560-z92kCUO6o)) and started adding components for a custom project. RN3.1 and RN4.1 have numbers written next to the pins, but those are not Net labels. What are they and how does EasyEDA integrate them into the project?
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andyfierman 1 week ago
[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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HugoW 1 week ago
Thanks for your reply. I worked through the Welcome to EasyEDA files, but either it's not in there or I overlooked it. I don't know where else to look. Googling it is rather difficult, as I don't know the right vocabulary, I don't know what it is. I have no hosting space to host a picture of the schematic, which is why I linked it. Please let me know what else I can do for this question to be EasyEDA forum-worthy. I'll edit the question to be more to the point. Thanks, Hugo
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andyfierman 1 week ago
"RN3.1 and RN3.4 have numbers written next to the pins, but those are not Net labels. What are they and how does EasyEDA integrate them into the project?" They're the pin numbers of the resistor network package for RN3. Left-click on the end of the pin: ![image.png](//image.easyeda.com/pullimage/LRdbxtsJEzNY5DXJ6u01GCAlWbmcAjuxghB6nFdr.png) Drag a wire to the next point that you want to join by a wire: ![image.png](//image.easyeda.com/pullimage/hcIe1k9wmlwRtd5hrBN2d3utJHKOv2hlBHWamCtX.png) As stated in: [https://easyeda\.com/andyfierman/Welcome\_to\_EasyEDA\-31e1288f882e49e582699b8eb7fe9b1f](https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f) we strongly recommend that newcomers to EasyEDA _do not_ start off by trying to create an actual project. Start by reading [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) Then create a dummy project, the sole purpose of which is to _play_ with the tools and learn how to use them. Learning through play is a powerful technique and is not just for kids! You have done the right thing to post the link rather than pictures of your project. Pictures would be of little use in a project as complex as this but for the record you do not need hosting space to store a picture. You can just drag and drop it into the forum post. :) BTW: Your PCB has a stray element in it on the far left: ![image.png](//image.easyeda.com/pullimage/Fywnmssm0EdlQOEDRm6uPD6i2CYfTsqeOhRUx8gu.png)
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HugoW 1 week ago
Thanks for the message. I've made several 'dummy' projects, changed some and made an actual PCB linking a Mazda ECU plug to a Speeduino board. I even created my own parts, schematics and PCB to match. I worked through the instructions as well as I could, but (a in school) stuff does not stick untill I actually use it. And to me, it didn't make sense why there would be resistors in the parts when those are not used. Now that I know it is visible part numbering (which still does not make sense to me, as in other parts those do not show) I think those resistors mentioned I can just leave off, they are not used, as I plan to use single 1206 resistors, no networks. Thanks again, Hugo
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