Hello I have made a simple circuit
To turn on the ac via blynk app
Blynk >~> esp>>~relay >>~> ac
For about one month it worked and than it stopped working, while trouble shooting figured that one relay chann stopped working (2 channel relay)
The relay it self is responding to blynk [on/off]
but its the outposts terminals (common and,normally open) don't execute power
What could be the cause of it? meanwhile wired the 2nd channel works fine
Wiring diagram attached
Equipment
SunFounder 2 Channel DC 5V Relay Module
ESP8266 Nodemu
Thanks!