ESP8266 Community Forum

Dear All,

My self Ajay from Nepal.

Sir I am using node MCU board with 4 Channel 5V relay (Songle).

Sir, the problem which I am facing is:

1) Relay Chattering &
2) Auto ESP8266(NodeMCU) Reset on Power fluctuation.

Do, I need to place capacitor after Hi-Link PM-01 Module, if yes so please suggest me schematic or Additional battery Battery.

Sir, I am very beginner in Automation, please ignore my mistakes.

(Fritzing Attached)

Thanks
Ajay Singh

You're overloading the ESP8266 attempting to drive those Opto Isolators directly. Likely that is the cause of the Relay chatter and sucking down the I/O pin may also be the source of your reset problem. Capacitor is not going to help that, you might try a driver transistor between the ESP GPIO and the opto isolators on the Relay module.
Anthony

I am curious what action you took based on the feedback. Did you add a transistor to the GPIOs to drive the relays? I am going down a similar path. I have a ESP8266 12-E NodeMcu development board connected to a similar (4) relay module and I am using GPIO16 and GPIO14 and GPIO13 and GPIO5. My program is set to use Alexa commands and each command turns 1 of 4 relays on for 3 seconds. All works fine, no chatter however last night I discovered if I leave power to the 8266 and the relays, the 8266 seems to shutdown after a few hours. I was not sure if it was going into sleep mode, but perhaps my issue is overdriving the GPIOs.