ESP8266 EasyIoT relay

I've connected GND to AC EARTH without any success....

EasyIoT wrote: òsldkjflksjdflkjsdlfkjslkdjflskjdfbadcharshereòlaksdòalksdòlkasd
Ai-Thinker Technology Co. Ltd.

It looks like you have HW problems. Maybe power supply or voltage shift leveler. Also try to replace ESP8266 module with new one.

Wait, i've wrote òsldkjflksjdflkjsdlfkjslkdjflskjdfbadcharshereòlaksdòalksdòlkasd because cut & paste doesn't work with special chars... is chars from boot of esp.... power supply changed and esp replaced For level shifting i use simple resistor 22k to gnd and 10k to signal.... (ok 20k is correct but do you think that can be depend from this 2k more ?)

All connection tested.

Look at this blog.sunyday.net/?p=36

asm7100 wrote: Look at this blog.sunyday.net/?p=36

Yes but here level shifting is also on tx. We've seen that esp tx 3.3v is ok for arduino.... and tx of arduino must be shifting to 3.3 ....

Just use 3v3 then the problem is over