Since FAN_0 isn't wired up, I decided to try buying some micro connectors, adapters and jumper wires and connect the SoC fan to the connector on the module.
Unfortunately it didn't work: the fan didn't spin up, and I'm wondering if I did something wrong. Can someone confirm whether or not the connector on the module should be able to supply power and PWM signals to the SoC fan please?
Hi Rebecca,
I'm running my fans from the Fan header on the COM-HPC board to have system fan control. I soldered a JST connector (https://www.amazon.com/dp/B09DYLY95R) to a male fan connector to make the cable. The cable works as expected and the fan speeds change with the CPU temperature however the fan curve is way to aggressive especially for the water cooler I'm using, I have yet to find a way to adjust the fan curve. I ended up ordering a Noctua PWM manual fan controller (https://www.amazon.com/dp/B072M2HKSN) and putting that inline with the fan so I'm able to tame the fans to almost silent and still get good cooling.
This is the pinout I'm using on my cable, the JST cable colors are based on the cables I purchased but pinout is left to right with the connector in the socket:
Fan connector --> JST connector
pin 1 - GND pin 3 - yellow cable
pin 2 - +12V pin 4 - white cable
pin 3 - Tach input pin 2 - black cable
pin 4 - PWM output pin 1 - red cable
Hope that helps, if you are still having issues let me know and I can try and provide better instructions or send a photo of my cable.
ian
A picture is worth a thousand words :-)
ian
Thanks! I'll try again with a less hacky solution (i.e. this time soldering wires).
Hi Ian, Rebecca,
As the current FAN_0 does not have a PWM signal due to an optional BOM on the module board, and only the module's BFAN_1 is activated in previous.
The new BOM will activate both FAN connectors as FAN_0 on the carrier board and BFAN1 on the module.
And we will be preparing a converter cable for all clients who have ordered the AADK/AADP to connect the FAN to the module's BFAN_1.
For the converter cable usage: https://www.ipi.wiki/pages/aadk-docs?page=QuickStartGuide.html
Before the cable arrives, we recommend plugging the fan cable into the following FAN connectors:
FAN1, 2, with fan speed controlled by temperature as FAN table below.
1 under 30 degree > 40%
2 30 degree > 50%
3 35 degree > 60%
4 40 degree > 70%
5 45 degree > 80%
6 50 degree > 90%
7 56 degree > 100%
FAN4, 5, with a 100% PWM output at all times.
Cheers,
Lauryn
