The problem: I have a NODEMCU (8266) connecting to my router via WiFi and logging ping responses from devices on my home network, using the
Its working fine with all 6 devices on the ethernet, (giving similar results to tests from my wifi laptop);
however its NOT EVER getting a response from another (ESP32) arduino unit, which also connects via WiFi.
However I CAN ping that unit from my laptop, connecting via WiFi (Using "Network Pinger" - which shows an average ping time of around 100ms with an occasional excessively long or missed ping.).
more details of the unit on my website here
The sketch is on that page as a zip archive as each functional section is on a seperate tab in the IDE; http://www.skillbank.co.uk/arduino/netmonitor/netmonitor.zip