Hi there,
I’m using a Esp32 Board with a Grove Relay. I connect the VCC and GND of the Relay to my 5V power supply. The signal pin is connected to D13 of my ESP32.
When I run this setup(nothing connected to the Relay) with the Arduino Blink example everything works fine(LED on Relay is blinking and I can hear the click everytime it turns on and off).
However, as soon as I connect my 230V 32W humidifier to it, it can happen(usually it runs correctly for a little while) that the LED on the relay would turn off, but there is no clicking sound and the humidifier keeps running.
When this happens, I have to disconnect everything to get it working again…
Do you have an idea why this can happen? Is it possible that my digital pin can deliver too little current? I think that shouldn’t be a problem for this module, right?
Thank you for your help!
Stefan
Hi,
It’s difficult to tell the exact problem since it’s a combination of h/w and S/w! Can you share the code? also, check the current from esp32 the relay module need 100mA to work.