clicky wrote: ↑
Wed Aug 21, 2019 7:21 am
I would really like to see graph of Flirc Case vs Fan Shim.
I don't have a graph, but if I was a betting man, I'd put my money on the fan. In my experience, a fan alone works better than a heatsink alone.
However, if both solutions keep the Pi4 below the 80C throttling temperature, then I would prefer the Flirc. In the end the goal is to keep the Pi cool enough to maintain maximum performance and prevent heat damage, and temps below 80C do that, so does a few C difference here or there really matter? The Flirc makes no noise, does not require any additional power, and will not pull dust into your system (like a fan).
On the other hand, the Fan Shim is a pretty cool little gadget (pun intended). It has an addressable switch and RGB LED which you could use for other things (default is manual fan control and temperature indicator). It's pretty quiet, but definitely not silent. It is louder than the Noctua 40 x 10mm fans I have on other systems, but you can install Pimoroni's software to toggle the fan on and off as needed (Buster required).
jcyr wrote: ↑
Mon Aug 26, 2019 4:35 pm
I've got to wonder how much these metal cases affect WiFi and Bluetooth performance?
On my Pi 3B(+) models, if there is any effect, it's negligible (I have not noticed a significant loss in signal or performance after moving both a 3B and 3B+ into Flirc cases). Do note that the Flic is plastic on the bottom and part of the side near the wireless antenna (unlike some other cases which enclose the Pi in a metal box).
It's harder to tell on the Pi4, because it's WiFi performance seems to be lower, and more variable than my Pi3 models (things have improved with updates, so I assume the software is still being optimised). From a visual comparison, the walls of the Pi4 Flirc look noticeably thinner than the Pi3 Flirc, but I have no idea if that makes any difference.
I have a 4B2 in an open sided acrylic case, and a 4B4 in a Flirc, and neither one has great WiFi performance (both are worse than a 3B+ in a Flirc). In testing, their results are so inconsistent and variable, it's hard to draw conclusions. I've been disappointed in the Pi4 WiFi so far, but as I said, it seems to be getting better. Since it's all new hardware and a new Raspbian version, I would hope that performance would improve with new soft-ware and firmware (which seems to be the case, and I hope it improves further).
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups, and where is that annoying music coming from?