ESP12F - switching a Relay off turns the wireless LED onboard BRIGHT BLUE ?

[JR01]

Guys, this is a funny one, first time this happened to me.

I have an ESP12F, with r107, GPIO2 linked to a spark fun logic converter, with the 5v side of the logic converter switching a relay, and 10k pull-up on GPIO2 (also tested with an LED), using a 'Switch' in devices....
- when I switch the Switch on with http://192.168.2.65/control?cmd=GPIO,2,1 ~ all good, the Relay switches on, but......
- when I switch it off, with http://192.168.2.65/control?cmd=GPIO,2,0 - the relay switches off, good, but it also turns the LED on the ESP on, BRIGHT blue ?????

Same behaviour if I switch the Switch off with MQTT with topic /RHZA/ESP03/GPIO/2 and payload 0. Also tried it with another ESP12F, same behaviour. Also tried it without the pull-up 10k from GPIO2.

Apart from the fact that all works, I have never seen this, and surely this will eat amps?

Anybody with ideas here?

Switch r107.png (60.27 KiB) Viewed 5131 times

[MarS]

Check if "Wifi Status LED" on the tab "hardware" is pointing at GPIO2.

[JR01]

Thank you MarS, nope not pointing to it. Any other ideas where to look?

[costo]

It is just by design.
Some ESP modules have the blue Led connected to GPIO2.

So the led will turn on when GPIO2 is made 'LOW' which explains what you see.

[JR01]

Thank you costi, switched out to gpio16, now working. Found another post in esp forum with same. Thanks!