I have a couple of projects on the go just now and I want to be able to PING the arduino to see if it is “there”.
I know PING is no longer the “preferred method” of doing this - from other searches - but as it is on a local network, and other devices are pinged to identify them, sticking with what I have seems the way to go.
Alas all my searches for PING have been to allow the arduino to ping other addresses - or Ultrasonic sensor readings.
One of the Arduinos is the NodeMCU wifi one.
Another is the ethernet equipped Arduino.
Thanks in advance.