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First diagram with Kicad

 

开云体育

To learn how to use Kicad, I came to draw a first diagram.

When I run ERC I get a number of errors that I don't understand.

I also have this diagram on LT Spice

Thanks

Draft2.asc
Draft2.asc
Prusa.kicad_sch
Prusa.kicad_sch

 

开云体育

On 30/08/2022 15:34, Stanislas Thouret wrote:

To learn how to use Kicad, I came to draw a first diagram.

When I run ERC I get a number of errors that I don't understand.

I also have this diagram on LT Spice

Most likely, at least some of these relate to power and ground. Put a <PWR_FLAG> on power rails and ground, and see if some of those errors disappear.

--
Regards,
Tony
 

You have a few small errors:
You need to place No Connection flags to pins 4, 5, and 7 to tell KiCad you intended for those pins to be left unconnected.
You need to move some wires (from J3 and to pin 6) back to the grid. Select all (Ctrl-A) and then right-click and choose Align Elements to Grid will fix all grid issues. Pin 6 wasn't connected even though it was close.
You need to add power flag symbols to the power and GND lines from J2 and J3 so KiCad knows where power is sourced. Because the wire from J3 was off grid a Power Flag placed here didn't connect to the wire.
The power flag symbol is in the standard library and it is called PWR_FLAG. You can search for it by name in the Add a Symbol dialog.

I have attached a revised version of your schematic. It passes the ERC checks.

Prusa.kicad_sch
Prusa.kicad_sch

 

开云体育

Many thanks for the explanations and the modified diagram

Stanislas

Le 01/09/2022 à 00:32, Dennis a écrit?:

You have a few small errors:
You need to place No Connection flags to pins 4, 5, and 7 to tell KiCad you intended for those pins to be left unconnected.
You need to move some wires (from J3 and to pin 6) back to the grid. Select all (Ctrl-A) and then right-click and choose Align Elements to Grid will fix all grid issues. Pin 6 wasn't connected even though it was close.
You need to add power flag symbols to the power and GND lines from J2 and J3 so KiCad knows where power is sourced. Because the wire from J3 was off grid a Power Flag placed here didn't connect to the wire.
The power flag symbol is in the standard library and it is called PWR_FLAG. You can search for it by name in the Add a Symbol dialog.

I have attached a revised version of your schematic. It passes the ERC checks.
_._,_._,_

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