ESP8266 Community Forum

- Wed Jul 01, 2015 1:23 pm #22181 hi
i am using a esp8266-12e to switch mains 220v power . when i am using a 5v opto isolated mechanical relay the esp resets when i turn the mains on or off . without mains load the relay functions flawlessly.
when with the same setup i use a 5v solid state relay module the setup runs perfectly without reseting the esp.

esp8266.jpg

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- Wed Jul 01, 2015 1:29 pm #22182 i am using a uln2003a to control the relay.
please guide

FullSizeRender 2.jpg

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- Wed Jul 01, 2015 8:44 pm #22207 may i know what is that opto isolated 5v relay?

your circuit may not be well protected that is why it is resetting.

- Wed Jul 01, 2015 11:24 pm #22214 this relay is a chinese make and looks like this

one-channel-5V-relay-module.jpg

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