I just thought that we shipping with a bad one
Actually, you can also DIY the RTC battery slot for cooling fan, both comes 1.25mm pitch header.
I've just update the datasheet of the cooling fan, it's not Sunon one, but from a Taiwan factory.
Hello, Gouwa!PWM_F - Is it the control output for fan?Does it has the control driver?
The GPIO Pin cannot drive the cooling fan directly(the fan need more than 100mA current, but the GPIO can just provide less than 10mA), so a PWM module is needed for it.
I undestand, that it cannot drive the cooling fan directly. I mean, What is "F"? And how is it work?
I need a switch-on signal control for my cooler's circuit with a 12V supply.
Just a name for PWM, check the schematic for information:
I see it.How to add 3 operation modes of the cooler? Like you did for geekbox
Mode 1: always onMode 2: always offMode 3: trigger by the temperature of CPU.How to set the temperature of the trigger-cooler?
May be, Will terry adds the selection menu to the settings on android? Like he added for geekbox's Mmallow...
As we haven't develop a module for cooling fan yet, so we don't got the source code porting on the VIM.
But you can refer the Geekbox source code and port to VIM, if any technical issues just let us know.
I need ON/OFF signal only. I asked about the control output. If Vim does not has this output, how to do it?My ITPS has driver +12V for FAN on MOSFET transistors with galvanic isolation.+5V is very low for good cooling. See more about my system
Is there a place to buy the heatsink from yet, or what the specs are for the one that was used with the fan?
Not a direct answer to your question, but this will answer part of it. Gouwa stated the room reserved for heatsink in this post.Area reserved for heatsink: 25 x 32 x 5mm
Looking at the picture in Gouwa's post, the heatsink appears to be a 25x25x5mm( I assume 5mm) heatsink. It is approximately 11 GPIO pins wide, turns out that is ~25mm.
I have connected the fan to the 3.3V gpio, and tbh i do not notice any difference, it's still too noisy.
I found sitting on a rubber mouse mat removed a lot of Noise.or add some rubber feet.
I'll look and try to find something, it doesn't make much noise when you put it on the soft surface.
This is compativel wiht khadas Vim?