Kicad: problems with the control of electrical rules in Eeschema

Schematic
1

ello everybody,
When running the electrical rule check in my schematic I get errors and warnings that I don’t understand.
Below is a capture

image
image908×582 24.9 KB

Error in red on symbol #PWR07

  • What allows him to say that it is a power input while I am in the power supply.
  • Why does it show me +24V when it is +25V
  • How to assign an output pin to drive it

Then I have a lot of warning about Pins or Wire off grid???

Thanks for your help

2

Have you read:

At page 18 you have PWR_FLAG symbols and it is what you are asking about.

It is original symbol, or you just changed its name?
Power symbols set the net name according to internal pin name and not the symbol name.
It comes from symbols with hidden power pins like digital ICs. If you chnge the symbol name from 7400 to 7413 the internal power pin VCC is still VCC. The same is here. If you have 24V symbol and you need 25V symbol you should define new symbol and change its name and also internal name of its pin. May be in some next KiCad versions it will be possible just to edit the placed at schematic symbol.

You probably changed grid during drawing schematic. Don’t do it. To position text precisily use CTRL+SHIFT combination after pressing M to move it.

3

Thank you for your reply.
I fixed my problem with the power supplies.

On the other hand I cannot manage to carry out your manipulation with CRTL+SHIFT.
I have tried deleting and rebuilding wire but the warning remains.

I tried in a new project with a very simple diagram and I have the same problem

image

4

I think I understood.
I have the impression that we are limited to the first 3 choices in the grid.

image

I use 0.254mm.
Thank you again for your help

5

When I started to use KiCad I was changing the grid, but since I was told to use CTRL+SHIFT I use 1.27 and never change it (50 mils is a standard for pin positions in all symbols).

  • point with mouse R1 (not resistor but this text),
  • press ‘M’ hotkey to ‘move’ - you move it with grid,
  • while moving press 2 keys CTRL+SHIFT and you move that text without grid (or with very fine grid).

I am at Windows. May be at other systems it work differently.

6

Ok, it works. It’s true I forgot to specify it, I’m under W11 and Kicad 7.0
THANKS

7

while moving press 2 keys CTRL+SHIFT

at least on my Win10 installations the use of “CTRL” (as modifier key) is enough to disable grid-snapping (albeit CTRL+Shift also works)

8

Just few years ago someone (at forum) told me to use CTRL+SHIFT. And as since then it worked I didn’t experiment with it.
Now I have checked:
Win7 + V5 - you have to use CTRL+SHIFT.
Win10 + V7 - using CTRL is enough.
Good to know. I will have to change habit.

9

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.