I am assembling a recently arrived "new" NAS box. There are of course two fans (cpu, case). There is only one header labeled FAN (near gpio bus). I assume that if for the cpu fan and can be controlled by os/kernel? Where then should the case fan connect? There is another compatible two pin header labeled RIC nearby the fan header.
Also Is there any proper "motherboard" manual like one would get with a standard motherboard. The wiki has no detailed information on the board and it's connectors/headers.
(10-04-2018, 04:00 PM)tllim Wrote: [ -> ] (10-04-2018, 03:56 PM)dkebler Wrote: [ -> ]I am assembling a recently arrived "new" NAS box. There are of course two fans (cpu, case). There is only one header labeled FAN (near gpio bus). I assume that if for the cpu fan and can be controlled by os/kernel? Where then should the case fan connect? There is another compatible two pin header labeled RIC nearby the fan header.
Also Is there any proper "motherboard" manual like one would get with a standard motherboard. The wiki has no detailed information on the board and it's connectors/headers.
check this: https://forum.pine64.org/showthread.php?tid=6598
I saw that already. He is only using a heatsink no cpu fan.
I do my best to look for answers before posting. My issue is I have BOTH a cpu and case fan and no obvious headers for both.
Take a picture of the board.
Picture? it's a rock64 pro in the new NAS case. Not much to see as board is covered by drives
https://www.pine64.org/?page_id=61454
See #11 the pi2 header. To the right is fan header. Two over is a header that says "RIC" but is two pins and would fit a fan connector.
These headers are undocumented as far as I can tell. What is the RIC header?
Better question: Has anyone set up the new NAS box (with a rock64pro obviously) with both a cpu and case fan? If so how did you power both
click Board image for fan - FAN, Number 4 (PWM controlled fan header)
Number 6 - not RIC, but RTC (for Real Time Clock battery backup header)
There are no signals for the fan on the GPIO connector (Number 2 - Pi-2 bus header)
connection of the second fan is not provided, plug FAN in either a chassis fan or a MCU fan.
If you want to use two fans, then connect the second one to the power supply yourself.
For example, I connected the second fan to an
homemade thermostat.
Thx all I get the lay of the land now
For now I'm going to forget about the cpu fan and see how that goes temperature wise.
If need be I can go with a 4 wire case fan and use existing header for cpu fan and then drive case fan with something like this
https://goo.gl/izUx2V or use pwm from the gpio header which will give me control via os.
in my opinion it is easier to connect one transistor to connector the GPIO (Pi2-BUS),
having organized a PWM signal from the system, and adjust the duty ratio in it.
exactly the same as it is done on the first fan.
or even from the same PWM signal (FAN_CTL_H).