Need Help with a counter based off a Button connected to a relay

[John93]

Hope this can help you :

I’m trying to count the time that passes from turning a relay on

Hi guys, I’m trying to use the same example to count the time that passes from turning a relay on. The RTC is working but I don’t understand how to connect it to the “on” and “off”. I want it to start from 0 when turning on the relay and stop when turning the relay off. Can you please assist? #include <BlynkSimpleEsp8266.h> #include <TimeLib.h> #include <WidgetRTC.h> // You should get Auth Token in the Blynk App. // Go to the Project Settings (nut icon). char auth[] = "Token"; // Your WiF…