Argon Fan HAT for Raspberry Pi 4 | 40mm Fan with Power Button | PWM and Software Controllable | Easy Setup

The Argon Fan Hat is a low profile, programmable speed fan, for RaspPi. It is nicely built, and takes power off the GPIO connector; no ugly wire for power. All GPIO connections are passed through so that adding another hat would be easy. The speed control is programmable, according to temperature and allows full on, or various % of speed to be set at 3 different user selected temperature points. The fan is very quiet, and kicks in and out almost imperceptably. I bought 3 and could not be more pleased. The construction is superb and it installs easily. They provide a link for the control software, which can be installed without problems. A very nice addition for working Pis.

These fans are awesome. They are also configurable via software on the Raspberry Pi that allows you to set what temp the fan will turn on and also what speed it will run. If you choose not use the software at all, the fan will just stay on a run at the 50% speed. Just doing this chopped off about 10 degrees on my devices, so I think I'll just leave that setting as is. I have three units running all at the same time and while I can hear the fans when up close, they aren't super annoying. It wouldn't bother me anyway since I have these devices running in a dedicated network rack, so it's not something I ever have to be close to.

I bought this on price, potential cooling and the power button. I have it in a pishop HighPi case. The configuration software is downloadable via curl and installed via bash. Contrary to another reviewers statement, the controller software (as of this review) only allows 3 head/fan speed configurations [vs. 4] (of your choice). I can't say how good the cooling action is yet (my Pi4 is oc'd right now anyway at 1750-1900) - have not stress-tested the combo yet. It does clear all the little heat-sinks I have on. Only time will tell if the fan holds up, which is par for the course. It only gets a 4 our 5 right now because: 1) The fan is not objectionably loud, but you can definitely hear it sitting nearby when it turns on (and only gets louder at the speed increases. If you need an absolutely noise-free environment, this may not be it). 2) Love the on/off button, works great if you do NOT have a top on your case. I drilled a hole in the top of my HighPi directly over the button. Don't have a 3D printer, but if I did I would make a flat-head, blunger-like stick to fit in the hole that could be used to press on the on/off button with a case top on.

This fan is easy to install and runs quietly, even at full speed. It can be run at full-time at full speed and is supposed to have an automatic mode where the speed controlled based on user-supplied temperature settings. A set of LEDs is supposed to show which of three temperature bands it is operating in. I have not been able to get the automatic mode to work, but to tell the truth, I didn’t spend much time trying. As a result, mine are running full-speed with all three LEDs lit.Something I don’t find much use for is a power button mounted by the LEDs that controls power the the Pi. I had already installed switches on the power cables of my Pis.All-in-all, I would recommend the Argon fan HAT, but wish I could get auto mode to work. Nonetheless the fan does a great job of getting the Pi cool while running distributed apps 24/7.

The PWM script works fine. I have set the fan to start at 10% on 50C. It generally keeps the temp around that and sometimes (may be a few times a day) I see the blue light (fan turned on) for some moments, and within one minute it turns off -- which means that the temperature fall below 50C. I am happy that I did not buy the similarly priced fan + heat combos that doesn't have any PWM and the fan constantly on. The fan, when turned on is silent enough to be not intrusive, but when it turns on and I am in the room, I can understand that it has turned on. So it is not completely zero noise, its sufficiently low noise. For comparison, my MBP fan is much louder than this. But note that my data points are based on when it turns on at 10% speed.If they had a version with both fan and heatsink, it would probably be even better.

I purchased the Argon Fan Hat because I really, really like the Argon One RasPi case. I purchased this Fan Hat for another project. My disappointment is that the Fan Hat doesn't have all the same functions as the fan in the the case. The Fan Hat doesn't have the Power On function, where as it does still have the Power Down, Reboot and Hard Power Down depending on the power button sequence. So it's back to either powering down with the power strip or and additional power button on the RasPi power supply. I think it needs stand offs provided for mounting. It only uses the GPIO pins to mount/secure the Fan Hat to the RasPi. Granted, the RasPi isn't getting thrown around, but its a little nerve racking having the fragile GPIO pins as the only thing holding the Fan Hat. Speaking of the GPIO pins, they're a total loss unless and additional male to male adapter is used or adapt most everything to a male pin out. The first image is of the mounting and clearance. A heatsink CAN NOT be used on the processor unless the Fan Hat is only partially fitted to the GPIO pins, then it's quite unstable and will definitely require stand offs. The second image is upon power up, the Fan Hat itsels powers up to 50% as shown by the two LEDs for several seconds then idles out till it's time to cool things down.

I use my RPi4 as a plex media server mounted behind my TV. The small fans with other cases were pretty loud and failed quickly. With the larger fan and controlling software, this fan is very quiet and only runs when needed so it should last much longer. Super fast and easy to install. Normally keeps my pi running below 50c unless I am really working it, then it might get to 55c. Never have to worry about it throttling down.

Pretty cool this little fan, my son it is building a computer, I ordered this fan to cooling the processor and keep it safe to not get overheat, as soon my son got home put it on, it’s amazing how that little fan was blowing so much air, I like the price and fit perfectly, thank you!