RT-AC68U Power for Fan

[gatorback]

I am contemplating a fan to cool an RT-AC68U: Google was unable to provide an example. Specifically, I need to understand what is electrically available (voltage / current limit)to power fans and where to pickoff power. If you have opened an RT-AC68U, please state this in your reply. Constructive responses are appreciated: thank you.

 

[L&LD]

Are you using both USB ports and therefore have discounted a USB fan?

Have you considered using an USB 'Y' cable to plug both your (powered) devices and the fan too?

 

[gatorback]

Good idea. Although the USB is a simple and quick, if I can mount a fan and solder two wires, that would have less wiring to snag. Unfortunately, I may not have the time to do this and end up the USB route.

 

[kvic]

Good idea. Although the USB is a simple and quick, if I can mount a fan and solder two wires, that would have less wiring to snag. Unfortunately, I may not have the time to do this and end up the USB route.

I found your response a bit hilarious...

ASUS router comes with a serial port (four pins) on every PCB. There is a VCC pin (3.3 or 5V) and a GND pin. I think I even saw a picture of that ...in one of your many posts regarding fan/usb/etc. This is a good source for a low power fan...so good that u automatically change a high RPM fan to a low one...quiet and cool enough. Just remember to buy a 5V DC fan.

Connect your fan there. Could be no soldering required at all. I would encourage you to give this a second consideration and share with us your joy of result...apparently you're looking for such a solution. Neat and good looking. Probably takes 30mins.

 

[gatorback]

@kvic: Thanks for the guidance. As I understand it, it is not only necessary to correctly match the voltage of the fan with the power source, it also is critical to ensure that the draw of the load (fans) does not exceed the capacity of the power supply's ability to source current / current rating. This leads me to wonder if anyone has had a history of drawing 5V from a RT-AC68U serial port and with what model fan (so as to determine the current draw from the fan's documentation).

Any documentation / postings of the RT-AC68U's serial-port pinout and location for the serial port (photo / diagram) is appreciated. Thank you

 

[Engineer]