inversion of the on/off command

[gph.giraud]

Hello Robert
I just made myEsp relay to control the opening of my observatories and I have a problem: everything works fine but the controls are reversed. When powered up the relay sticks and in NINA when the switch is on the relay takes off and when it is off it sticks
What do you think ?
Best regards

[brownrb]

Yes,
Look at the relay connections.
There is the Power + Ground
Then there is a group of 3 green terminals
NO
COM
NC

On some boards it might be
OFF
COM
ON

If your connection is currently
NO
COM

then change it to
COM
NC

First try that.

Regards
Robert

[Philippe]

Hello Robert
thank you for your reply
The solution does not suit me because the unpowered relay provides an ON contact under these conditions and, on the other hand, the indications in the driver are incorrect.
I modified the firmware so that the relay works in the correct direction:
in the setup: "digitalWrite(RELAY1_pin, 1)"
in "void writerelay1(byte newstate):"
"{#if defined(ENABLEESPNOW)
" slavemessage. relay1state = newstate;
"#endif
"relay1state = newstate;
"if (newstate == 1){newstate = 0;}
"else if (newstate == 0){newstate = 1;}
"digitalWrite(RELAY1_PIN, newstate);
}
"byte readrelay1()
{
" return relay1state;
}"
the relay operates in the correct direction.
cordialement
Phil