This is the area to clarify hardware specification if there's anything unclear from the datasheet. If the specification is software related, please ask in the related software section.
Upboard fan control
Sahaj Sarup
New Member Posts: 21 ✭
I have the fan heatsink, i want to use the up-board for a NAS drive and since it has a fan I am worried about 24 7 operation and damaging the fan. Is there a way to controll the fan switching on and off based on cpu temps?
Comments
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The fan is always on, because we can not find such a small fan with 3 pin ( power, ground, PWM).
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what about simple on off via gpio
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After checking with our engineer, here is some feedback.
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We use the GPIO pin to control the FAN VCC ON or OFF , , when boot up this pin is high level , when power down this pin is low level . -
on the block diagram it says the fan connector is connected to a PWM. I know you can't get RPM feedback from the fan with a 2 wire fan, but can you not control the duty cycle via that PWM?
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Here we got some reply from the engineer.
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We can’t read the FAN RPM .
Current design is use a GPIO to simulate like PWM signal control the FAN VCC -
Is there a way to control pin 11 on CN34 through software or is it bound to the board's power state?
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As far as our investigation, it is up to the power state. You can not control it from SW.
