Disconnect the IN wire from Esp Gpio and connect it to GND.
Does it trigger the relay?
If yes, you have active LOW relay and you need transistor to drive it correctly.
Or another type of relay module. Or 5V arduino.
Disconnect the IN wire from Esp Gpio and connect it to GND.
Does it trigger the relay?
If yes, you have active LOW relay and you need transistor to drive it correctly.
Or another type of relay module. Or 5V arduino.