When the browser ask for a page does the router need somme ‘asking for ‘ strength?
Or can we say the router catch the card signal and ask for a page?
When the card response does it need an emitter strenght?
When the server println (WiFi.RSSI()); (That I read on the web page) does it print the card WiFi.RSSI()?
right clik on the link
All a router does is route packets. It does not ask for pages – the browser does that. If your card can connect to your router you are generally good to go. Most routers require at least -80dbm signal strength to connect to a device.
Serial.println(WiFi.RSSI()); would print the Received Signal Strength in dBm to the serial port. See https://www.arduino.cc/en/Reference/WiFiRSSI
A good article to read is at https://www.metageek.com/training/resources/wifi-signal-strength-basics.html
If the router is an antenna with x reception strenght;
The card is in control of the signal strength?
I guess I’m not understanding your question. Perhaps if you could let us know why you are asking about signal strength.
A great article about WiFi signal strength (Even though it’s mainly about routers and phones) is https://www.duckware.com/tech/wifi-in-the-us.html.
Remember that with our ESP32 boards we are stuck at 2.4GHz so speed is limited. Even with a high spec router with the best signal strength you won’t get those high speeds like with WIFI6.
Right-clik on the image and chhoose open …
1- The distance between the emitter and receptor is important
2- As there is more people online in the morning, there is more interference
2b- Most of my successful receptions occured in the afternoon.
3- A stronger emitter ( esp 32 or else) is only one factor
4- A stronger router reception catch more neighbors interferences
I’m not a WiFi expert but all you really have control over is transmission strength. RSSI is RECEIVED Signal Strength Indicator which is affected by both transmission strength and receiver antenna. The ESP32 has an extremely small PCB antenna. If you’re looking for any range you will need to attach an external antenna. Something like https://www.amazon.com/gp/product/B07PBFKJSN. Remember to remove the zero ohm resistor and jumper the pads so that the antenna is properly wired in.