Subj : Re: Pi-FAN for RPi4 with 4 (instead of 3) cables? To : The Natural Philosopher From : Pancho Date : Sun Dec 08 2024 10:15:09 On 12/7/24 14:50, The Natural Philosopher wrote: > On 07/12/2024 12:31, Pancho wrote: >> On 12/7/24 11:54, The Natural Philosopher wrote: >>> On 06/12/2024 14:53, s|b wrote: >>>> On Thu, 5 Dec 2024 07:48:59 +0000, The Natural Philosopher wrote: >>>> >>>>>> Tnx for the follow-up. According to the shop I could just snip the >>>>>> green >>>>>> wire, so I've done that. I've set it to run at 60°C and the fan's not >>>>>> turning (CPU temperature is 48°C). >>>>> My Pi 4B runs about that with no fan >>>> >>>> That's what I'm saying: it's 48°C when the fan is not running. Software >>>> only allows to set a minimum temperature of 60°C before the fan starts >>>> running, so I unchecked the setting and now the fan is turning all the >>>> time. A fan with only 2 cables (red & black) should have been enough. I >>>> don't know if there's a way to set that minimum temperature to 40°C... >>>> >>>> But yes, it's not really necessary and  I shouldn't have bought it. But >>>> it was fun setting it up. I use RPi4 for Pi-Hole and PiVPN. I've played >>>> a little with RetroPie, so maybe I'll give that another go, because I >>>> have two RPi4 now. >>>> >>>> I used a Pimoroni Heatsink Case for the first one I bought: >>>> >>> raspberry-pi-4?variant=29430673178707> >>>> >>>> Temperature is around 40°C. >>>> >>>> The Unity V2 comes with a fan: >>>> >>> search=unity> >>>> >>>> Temperature is between 30° and 35°C. (There's a real peak when I open >>>> Fx.) >>>> >>> >>> It's an interesting thought as to why one would use a fan at all. If >>> its such a high compute task that you need one, maybe a bigger Pi or >>> an Intel based machine is indicated. >>> >> >> Heat is often about continuous utilisation, like CCTV. On my Pi4 I have >> a heavy aluminium case that serves as a heat sink, it is fine without >> a fan. >> >> On my Pi5, I use the official active cooler heat sink, which has a >> fan. But a good fan, in that it only comes on during the hottest days >> of summer. >> >> In a moment of stupidity I also bought a metal case for the Pi5 which >> messes up my USB keyboard/mouse dongle (reflection?), I haven't >> checked to see what it does to Bluetooth and WiFi. >> >>> I dislike fans. They fail. >>> >> They do, but they normally last for years. >> > > Not IME > > Repaired several computers with failed fans. If you were lucky the fan > itself just needed replacing, If you were unlucky it took the processor > with it. > > The trouble is the environment in which they run. In a clean machine > room, OK. In an office full of people some of whom must have had pets > and some of whom smoked, it could be  a very common failure... > Does your experience come from this millennium? I remember that type of thing happening, but it was a long time ago. Modern fans are good, I have CPU fans still running after 10 + years. Stunning reliability. Plus, CPUs shut down without a running fan, and have thermal shutdown too. --- SoupGate-Win32 v1.05 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3) .