Nice PI4 box

But what if you need wifi, that's probably damped quite a bit. Looks nice. I have a Pimoroni "Fanshim" which gives about the same result. New firmware also helps a lot. Here is a test of a couple of passive heatsink cases:

Nice!

On a sunny day (28 Nov 2019 14:26:50 GMT) it happened A. Dumas wrote in :

A very good point you make there, I am not using WiFi, so did not even consider that when looking for a box. This raspi is recording 6 security cameras, optional one E2500 webcam for inhouse, an USB audio stick for record, has a 4TB Hitachi harddisk connected via an USB hub for storage, a Cynergy USB DVB-S2 satellite tuner an RTL-SDR stick for reception of my outside weather sensor or as spectrum analyzer, or whatever else uses radio. Been now up for more than a week in that configuration that (2 weeks already?) and so far works perfectly, very happy with it.

I experimented today by mounting the little fan the other way around so it blows at the processor from the top and am now down to 46 C after running an hour in the above configuration, room temperature is about 21 C, I did not install any eeprom update as was done in the youtube video you referred to, But I think this box it is a good deal, looks nice too. The raspi is well protected, I do not like those things where the PCB is reachable from the outside and pieces of metal could get between it and the case. It all depends of course, I am very happy with this, if you are a WiFi user it is maybe not for you. But I also have a USB wifi stick for my raspi 2 somewhere.. .so there is a way out. top: asks: 199 total, 2 running, 197 sleeping, 0 stopped, 0 zombie %Cpu(s): 6.4 us, 3.2 sy, 0.6 ni, 89.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st MiB Mem : 3906.0 total, 310.8 free, 390.9 used, 3204.4 buff/cache MiB Swap: 100.0 total, 98.0 free, 2.0 used. 3336.7 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 683 root 19 -1 164608 50092 31452 S 7.9 1.3 15:29.64 Xorg X 896 root 20 0 16300 11332 3420 S 7.0 0.3 12:01.38 mcamip2 IP camera1 898 root 20 0 222148 39732 23904 S 5.6 1.0 9:13.17 ffmpeg IP camara1 encoding 900 root 20 0 16300 11480 3576 S 5.6 0.3 10:08.47 mcamip IP camera2 901 root 20 0 222120 39628 23892 S 4.0 1.0 7:04.12 ffmpeg IP camera 2 encoding 1788 root 25 5 35192 13324 3492 S 2.3 0.3 4:26.76 xgpspc_mon display of AIS GPS from other raspi 1126 root 20 0 148948 31932 24520 S 2.0 0.8 2:49.58 ffmpeg encoding of that to harddisk 1125 root 20 0 149180 32236 24608 S 1.7 0.8 2:50.11 ffmpeg encoding security cam1 1127 root 20 0 147960 31860 24788 R 1.7 0.8 2:50.89 ffmpeg encoding security cam2 1128 root 20 0 149188 32420 24608 S 1.3 0.8 2:49.09 ffmpeg encoding security cam3 1191 root 20 0 6576 4232 3808 S 1.3 0.1 2:00.02 xosview

raspi95: ~ # /opt/vc/bin/vcgencmd measure_temp temp=45.0'C

My main worry with active cooling is dust accumulation, but then again I have a big PC running 24/7 for years, every now and then I hoover it, get he dust fromn the CPU cooler and air inlets,,,,

In my experience, where the system box is mounted has a large bearing on dust accumulation. I've been running an AMD Dual Athlon system 24/7 as my house server for the last 7 years and its always been clean and dustfree inside, but it is mounted high up under a fitted work surface in my computer area: there about 25mm between the top of its case and the underside of the work surface. There's also remarkably little dust on the shelf the system sits on. The front and sides of the shelf are open for easy wiring access and free flow of cooling air.

Blog post today

On a sunny day (28 Nov 2019 16:26:06 GMT) it happened A. Dumas wrote in :

Thank you, nice site, good info!

That's a *huge* heat reducing / performance improving win for the Pi4! Thanks for this article. And it makes me wonder how much of an improvement we'll see for the Pi4 over all when they move to the 5.4 kernel next year.

It also makes a big difference to this box... well a little more than just a box :)

A fully algorithmic real-time software audio synthesiser - not a sample file in sight.

{cough} the hottest thing is the sound {cough}

Sweet. I'm looking at this thinking...what *could* Jack White do if he could hack it into one of his pedals

I've seen this case in the flesh somewhere in the last couple of weeks. Can't recall where but it may have been on display the last time I was at the CPC trade counter. Looked like a nice case but wasn't too interested, still stuck with the 3 for the moment (NetBSD compatibility) so active cooling isn't a must have.

As for RF screening I'd be surprised if it makes too much difference. At RF it would really need to be grounded to have much effect.

On a sunny day (Wed, 4 Dec 2019 19:04:53 -0000 (UTC)) it happened Andrew Smallshaw wrote in :

That is IMO a misunderstanding I your microwave oven no longer screened if not grounded? The essence of a metal screen around a RF source is that no RF can get out. Same with a lightbulb in a metal box no light can get out, light is also EM radiation, grounded or not :-)

I have just tested it with one of these:

That's simply not true.

David

On 04/12/2019 20:16, Jan Panteltje wrote: ...

"Does not ship to UK" :-{

Brexit and you are fine and dandy.

/ Bud /

a1=S0 b1=[1..2,'L0L'] a2=2*a1 a3=S1.4#b1 a4=(a2,a3) a5=64*a4

Hello Mike!

Thursday December 05 2019 12:41, you wrote to Jan Panteltje:

Search for same title on ebay.co.uk and you will find a few sourced in the UK for around 6 pounds.

Vince