Connecting a 12V 4 pin part fan
Hi, my build is coming along well - just the part cooling fan - delivered with the original kit - remains. It comes with a 4 pin plug I will probably need to cut and extend. I found some hints how to connect this type of fan to the octopus 1.1 but those are partly contratiting each other.
Has anyone done this step successfully and can tell me to what color (we got red black yellow blue) goes to that pin and how to set the relevant jumpers?
Thanks!
8 Replies
Connecting a 4028 fan | RatOS
4028 server fans are becoming a popular option for part cooling because of their light weight and great pressure and flow rates. In this guide we'll go over how to connect one and use it for part cooling. 4-pin fans usually aren't used in 3d printers, and many boards only provide 2-pin ports, but fear not! There's always a way.
if you have a recent kit, it's probably this fan https://store.cwc-group.com/mgt4012wbw28.html. Blue should be PWM, Yellow Tachometer.
noisy boy! This one definitely goes up to 100% while the board is rebooting, by the way.
you can configure it so that it doesnt do that
enable_pin is your friend
all explained in this article
I saw that, but I also saw the large red warning not to do so if you use the tacho
thanks for reminding me though!
dont use the tacho, you dont need it
Thanks guys!
fair-rose•16mo ago
seems the article is gone already.. is anyone can give me a hint on where the pins go and what config setting i need to change for the 4 pin fans that would be very cool. my brain is mush.
it might have moved to:
https://os.ratrig.com/docs/guides/4028/