The USB Fan Speed Controller (Fans) and ZK-BUFS 10W LED Dimmer from 4 ~ 12V to 1 ~ 24V was acquired in AliExpress, shop Aideepen Official Store, for use with my Roteador ASUS RT-AC86U, already shown here on Skooter Blog.
Specifically, the USB Fan Speed Controller will be used with fans that I installed on the RT-AC68U, who has also shown here in Skooter Blog.
The ASUS RT-AC86U It's a great router, with much more advanced features than the most common routers. But, some of them have a little problem: too hot! And it's not freshness, they heat up to the point of turning off one of the processor cores to prevent permanent damage. This occurs when the processor reaches 97º C.
The reasons why this occurs with only a few copies of the device is not fully known, but there are reports of those who improved by changing the thermal paste or loosening the heatsink a little, that would be too tight and bending, reducing contact with the processor. Ultimately, assembly failures.
Open the ASUS RT-AC86U it's kind of boring, as there are even screws under a label that has the specifications of the device and is glued. So, or use of fans turns out to be an effective and non-invasive option. Chinese sellers even include fans with the router in some cases.
I ended up buying the fans and they actually worked, lowering the temperature by more than 30º C easily. At first these fans were quiet, but over time they got louder. Sometimes one of them (ou both) resolves to vibrate and makes a noise, that lasts a few minutes or a few hours, and then back to normal.
I even bought one pair of fans with bearing, to see if they last longer and solve the problem. They haven't arrived yet. But I also found the USB Fan Speed Controller and I figured they could solve my problem too. After all, fans do not need to be running at full speed to keep the router's temperature at acceptable levels.
I've seen a router of the same model (RT-AC86U) that doesn’t have the problem of overheating and it works around 80º C, so I don't need mine to stay around 60º C all the time at the cost of loud noise. It could sacrifice a little at low temperature in favor of a lower fan rotation and, Consequently, less noise.
And that's how I decided to buy the USB Fan Speed Controller. There are several models, some similar to that, more simple ones just with a potentiometer to control, without displaying the output voltage. But as freight is more expensive than the product, I soon chose the best model I found, which shows the output voltage and has other features.
Unboxing, Assembly and Tests
The USB Fan Speed Controller (Fans) comes disassembled, together with the mounting screws and a Philips wrench for the task, which is somewhat curious. Perhaps the savings in assembly labor will outweigh the cost of the key, and so they leave the task to the buyer. The target audience for this type of equipment probably likes to make their own installations and should have no problems with this assembly..
I did the assembly of the equipment without major problems, with the key included. One screw left, but he came to more. With the help of my power bank and the USB tester U96 I found that the device delivers what it promises and really delivers configurable voltages of 1 a 24 volts with good accuracy, from an input voltage of 5 volts. The device must operate with any input voltage between 4 and 12 volts, but I didn't test it.
The USB Fan Speed Controller has a smooth start function, which increases the voltage gradually when it is turned on, which theoretically can extend the life of the fans or LED tubes used with it. It also has timer functions, that I haven't tested because they are of no use to me. The display can be turned off.
With the initial tests completed, I tried to put the USB Speed Controller to my Roteador ASUS RT-AC86U, and connect the fans it. Everything worked perfectly. I then lowered the voltage to just 3V and the fans were immediately very quiet. The temperature of the router's processor naturally rose, but not more than 5º C, around 65º C, which is quite acceptable and far from 97º C that makes the processor disconnect one of the cores.
Check out the photos and unboxing video, assembly and testing of USB Fan Speed Controller (Fans) e ZK-BUFS 10W LED Dimmer:
These are the package tracking information obtained on the website of the AliExpress:
2020.06.02 16:06 (GMT-7): Delivery successful 2020.05.27 09:05 (GMT-7): Accepted by Last Mile Carrier 2020.05.23 19:15 (GMT-7): Arrived at destination country 2020.05.08 23:05 (GMT-7): Departed country of origin 2020.05.08 23:05 (GMT-7): Departed country of origin 2020.04.22 14:04 (GMT-7): Shipment arrived at country of origin post office 2020.04.21 03:00 (GMT-7): Shipment left country of origin warehouse 2020.04.20 18:09 (GMT-7): Shipment at country of origin warehouse 2020.04.20 17:39 (GMT-7): Shipment dispatched
And these are the information obtained on the site of the station:
02/06/2020 16:21 [REMOVED] / SP Object delivered to the recipient 02/06/2020 10:45 [REMOVED] / SP object out for delivery to the recipient 30/05/2020 09:29 INDAIATUBA / SP Objeto encaminhado de Unidade de Tratamento em INDAIATUBA / SP for distribution Unit in [REMOVED] / SP 28/05/2020 08:27 CURITIBA / PR Objeto encaminhado de Unidade de Distribuição em CURITIBA / PR for Treatment Unit in INDAIATUBA / SP 28/05/2020 08:25 CURITIBA / PR finalized Customs supervision 27/05/2020 10:23 CURITIBA / PR Objeto recebido pelos Correios do Brasil Informar nº do documento para a fiscalização e entrega do seu objeto. Click here My Imports 28/04/2020 15:45 HONG KONG / Objeto encaminhado de País em HONG KONG / countries in International treatment unit / BR Informar nº do documento para a fiscalização e entrega do seu objeto. Click here My Imports 22/04/2020 14:42 HONG KONG / Objeto postado Informar nº do documento para a fiscalização e entrega do seu objeto. Click here My Imports
This is the table-summary of purchase:
|Product Name:||USB Fan Speed Controller (Fans) and ZK-BUFS 10W LED Dimmer from 4 ~ 12V to 1 ~ 24V|
|Name Original:||DC 5V 10W USB Fan Cooling Governor Speed Controller Regulator Fan Speed Switch Module LED Dimming Module 4.0V-12V to 1.0V-24.0V|
|Store:||AliExpress | Store: Aideepen Official Store|
|Current value:||R$ 19,83|
|Payment Method:||Credit Card Visa International|
|Shipping Type:||Aliexpress Standard Shipping|
|Shipping Fee:||R$ 25,12|
|Package Home Country:||China|
|Time in Transit:||43 days|
|Declared content:||Expansion Board Module|
|Type Marked Content:||Commercial Sample|
|Declared Value:||CNY 0.01|
I'm satisfied USB Fan Speed Controller (Fans) and ZK-BUFS 10W LED Dimmer from 4 ~ 12V to 1 ~ 24V. He fulfilled his role and lowered the fan speed of my Roteador ASUS RT-AC86U, making them very quiet, and still keeping the temperature low enough not to cause problems.
With the easily accessible control I can increase or decrease the voltage to have more cooling or less noise, if you want to do it. But, yet, nor did I make any changes, and the value that I initially set (3In) já está funcionando há mais de uma semana, sem ruído, e com o processador do roteador não tendo passado de 67º C.