Standard FAN connect to j4


#1

I just try to connect FAN to J4 as on scheme, in android try ON/OFF fan, but no voltage on j4 connector.
Is it works? Or I must use another connectors as PIN1/21/38?


#2

You might need to check the polarity of the two pins, can you take a photo and post it?


#3

It only gets power when the CPU is hot.
This is a setting in the Android "settings"
so let it run for a while, build up heat and then you’ll get power to that pin.


#4

Have you information on what temperature it will turn on?
I try Auto/minimal/norm/full speed in android settings - no power on j4 (check by voltmeter).


#5

No power on j4 pins. Checked by voltmeter.


#6

Which PIN you tested? Is it the + one?

The + PIN should be 5V if your VIM2 is power on:


#7

I see. I use 2 pin connector. This is my mistake.
Where can I find 4 pin connector?


#8

Hello, It is important to note that there is a load limit on the fan header. If I recall correctly, that limit is 150mA. I would not use a fan that exceeds that limit. Doing so could critically damage the fan control circuit.

Updated fan limit to correct value.


#9

Nope, it’s 2Pin 1.25mm pitch header! the Pin3 and Pin4 are main used for fixing and here designed as GND.

Can you take a photo on your cooling fan?