You need to use EasyEDA editor to create some projects before publishing
have a way to define a repeated subcircuit
1214 0
fabiocannizzo 6 years ago

Suppose I have a subcircuit which apperas many times inside a bigger circuit, it would be nice if there was a way to define its footprint only once.

My use case is: I am drawiing a board where there are many 8x8 led matrices, each driven by a MAX7219. The connection between 1 matrix and its MAX7219 requires 16 connections. I would like not to have to repeat it manually for each matrix.

I tried to achieve that with no luck both using new component or using sub-modules. Using modules, when I place many instances of a schemnatic module in a schematic, there is no way to decide whch net names are local to the schematic and which are global. Furthermore, when I convert to PCB, there is no way to make it use the PCB module corresponding to the schematc module. Using components, I get lot of conflicts with net names.

Please find below an example using components.

Example:
I create a PCB-LIB with two resistors in series (name MYCOMP):
    padR1_1- R1 padR1_2 - wire - padR2_1 - R2 - pad_R2_2
I create a SCHEMATIC-LIB (name MYCOMP) with two pins, associated it with MYCOM PCB created above, and tie the two pins with pad_R1_1 and pad_R2_2
I create a new project and place two components of type MYSCH.
Convert to the PCB
Now the problem is that the internal component connection "padR1_2 - wire - padR2_1" shows a DRC error.

Complicating a bit the example, let's say the schematic fro MYCOMP is defined using nets:
    NET_GND - padR1_1- R1 padR1_2 - NET_X1
    NET_X1   - padR2_1 - R2 - pad_R2_2
when I place an instance of MYCOMP on a manin schematic, I would like to control how the net names are expanded: I want that NET_GND remains unchanged, so that it is global, while NET_X1 is prefixed with a unique string to make it local, so that it remains local of this schematic. For instance I could define this using question marks, to mark nets which are local:
    NET_GND - padR1_1- R1 padR1_2 - NET_X1?
    NET_X1?   - padR2_1 - R2 - pad_R2_2

Last it would e nice if when I define a new component like this, if I could choose for it to have global visibility ot project only visibility

Comments

Login or Register to add a comment
goToTop
你现在访问的是EasyEDA海外版,建议访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
联系我们:https://docs.lceda.cn/cn/FAQ/Contact-Us/index.html不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow -mockplus- -mockplus- -mockplus- -mockplus- -mockplus- -mockplus- -mockplus- -mockplus-@1x -mockplus-

Cookie Notice

Our website uses essential cookies to help us ensure that it is working as expected, and uses optional analytics cookies to offer you a better browsing experience. To find out more, read our Cookie Notice