Question: Is there a way to get the Wifi signal strength ? · Issue #132 · esp8266/Arduino · GitHub
GitHub - shivasiddharth/WiFi-Signal-Strength-Checker: Simple tool to check the WiFi strength at your office or home. Check WiFi signal strength using ESP8266(NodeMCU/Wemos).
WiFi Signal strength indicator using ESP8266 - Electronics-Lab.com
Creating a wifi signal strength detector with Arduino Uno - Isaac Viel