[57north-discuss] ESP32 poor wifi, likely due shielding by a nearby ESP8266

[Lawrence]

Wouter

PCB antennas can be very directional, in recent EMC testing of a BLE 
2.4ghz modified F antenna I had a difference of circa 10dB as you 
rotated the pcb around 360 degrees, with even worse above and below the 
plane of the PCB antenna.

If within any casing you have is there room to rotate the PCB, that 
might help.
Daft question: Not having seen the mount is it on a pole or similar that 
can be rotated 90 degrees in the vertical plane.

Does your router allow you to survey local access points (I use a 
draytek which will do a scan of all the bands so you can see what is 
around you and on what chaannels) with a view to chnaging the 2.4ghz 
channel. Not fail safe as some routers will do dynamic selection - i.e. 
at start will look at choose a channel based on current use. Also some 
systems are better away from top and bottom channels.

Lawrence

On 16/05/2020 08:33, Wouter Piessens wrote:
> Good morning folks,
>
> Yesterday I managed to move my weather station to the back of the 
> garden and at same time install Kevin's air quality sensor on the same 
> mount. Unfortunately, due to the design of the mount, the ESP32 in the 
> weather station is shielded in the direction of the router by the 
> ESP8266 in the air quality box.  Hence, the router is only seeing the 
> air quality ESP8266.
>
> Unless there are no other options, I will not rebuild the mount.  I 
> wonder if any of you know of any tricks to boost the wifi signal 
> through hardware or via software (micropython) for the onboard wifi 
> antenna.  Moving the wifi router does not seem to help.    Except for 
> the ESP's, all my internet connections at home use the 5 GHz bands or 
> are wired.  But obviously the tens of neighbours have likely hundreds 
> of 2.4 GHz wifi appliances disturbing the spectrum nonetheless.
> Distance between ESP's and router: 20m horizontal, 2m vertical, with 
> only a window between them.
>
> Any ideas?
>
> Cheerio,
> Wouter
>
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