![]() ![]() ![]() This is a headless configuration, although I can hook to a monitor. Wired directly to TP-Link GB switch attached to TP-Link AX6000 Router: Simple speedtest-cli with version 2.1.2 and Python 3.7.3 results and Network information follow: Based on my current configuration, PI 4 Wireless Network does not get the speed required. Have attempted to figure this out in several ways. And the Flirc case is silent, beating the standard case by a wide margin noise wise. It's not maxed out, but I'm happy with my compromise. So when I got my downloadsup from 7Mbps to nearly 30Mbps by clearing the path to my router, getting the non-metal side of the case pointing at the router, I decided I was doing well. In short, the Pi 4 is a nearly impossible thing to get perfect reception from. Metal things lying in vicinity of the aerial give it capacitance, which degrades reception. The results improve a bit, but the fan is a noise source instead of an earth source. Those who don't have a metal case probably have a big fan over the cpu shielding the wifi aerial. Metal cases are therefore bad for wifi, no matter what folks say. Ground is a wifi sink, and the proximity of ground is also. The idea is that if any metal goes live, the RCD (Residual Current Device) will trigger a fault. Pi boards here all probably ground 0V through the power supply and make sure the metal cases are grounded. So the outside of the HDMI cable, the 0V line in the power supply are probably all earthed. In Europe, metal in all devices has to be earthed to get CE approval, without which they should not be sold. I have a Flirc case, with Aluminium on 3 sides, so I had to get the rubber side out. My router's aerial was vertical, so the Pi's aerial had to be positioned vertical. The one thing I had over other folks was that I go back to the Analog TV days where pinching a signal from distant transmitters was developed to an art form in Ireland, and I knew the ropes. ![]() I approached this with the same issue - slow wifi, downloads particularly. Tests here show the Pi lacks sensitivity in wifi. So I gather Broadcom have put the 43455 wifi chip inside the BCM2711, either as an IP core (VHDL) or similar. Interestingly, Cypress manufacture the BCM43455, but Broadcom makes the BCM 43454 & 43456. Broadcom use the prefix BCM for their parts, and Cyrpess semiconductor uses CY. I tried everything - firmware, modules, kernels, hardware research. I made some progress on this, so I'll post my results. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |