I found out that my fans are not running …
then i searched for it and found that the bug from 2021 is still valid and not fixed !
There is nothing wrong with the footprint (that I can see).
The thread you mention is about the schematic symbol. and it’s pin numbering does not match the footprint pins.
I just had a look at the Fan_Tacho schematic symbol, and it’s datasheet link refers to a jpg at some forum website. That does not instill much confidence. Fan_PC_Chassis is also extremely similar (Inclusive the link to that forum).
Apparently nobody took the initiative after that post from 2021. I created an issue for it on gitlab:
Changing some pin numbers is easy enough, but I am not familiar enough with KiCad’s library policies to do such a thing myself at the moment.
Both has to be fixed as pin 1 is not Tacho
Tacho is on pin 3, but the footprint is still correct.
Both also have power (+12V) on pin 2 in the center. That leaves only two possibilities, and if both symbol and footprint were wrong, the errors would have canceled each other out. Just rotate the connector until you have it’s top with the tab at the “bottom”.
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After re reading your post I think I understand better where you made a mistake.
In your screenshot, pin one is marked as “Tacho”, but that is the netname, the net name comes from the schematic (label) and this name has nothing to do with the footprint itself. The footprint only has pin numbers, and those are correct.
I opened an issue for the symbol on gitlab 58 minutes after you created an issue for the footprint. (I did search, but missed it probably because I was searching for symbols, and you also posted it in the KiCad code section and not in the library section. It’s different projects with different people and different backgrounds and knowledge sets.
But anyway, aris-kimi read them both, linked them and assigned it to himself to fix it.
For your next error report, comments like:
my new pcbs are now all trash
does not help them to solve the issue at all.
Combine it with mine post, where I added three references to websites with pinouts for PC fans. I selected them out of approximately 15 references I saw and picked the most clear ones, so the library maintainers can find the information they need quicker.
Honestly, this is the short term work around. If there’s enough clearance on the PCB, then just rotate the connector 180 degrees before soldering it down.
And if you’ve already soldered it down, you can probably pull the plastic part off of the pins and push it back on the other way around without unsoldering anything.
Yes, we all dream of perfect libraries.
In the meantime, do yourself a favour and work with personal libraries instead. They can be modified to your desire at any time. A simple copy of the “Motor” library to a location of your fancy will solve the issue short-time AND long-time.
Check the FAQs (top-right of this page).
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