Relays activate at startup

[RaphV57]

Hello,

I'm controlling a fan speed with double relay board and capacitors. When the wemos boot, the two relay are briefly activated. Have a look at my video to better understand.

Is there a way to avoid it?

Schematic

[TD-er]

See "GPIO Behavior Summary" on this page: https://rabbithole.wwwdotorg.org/2017/0 ... -gpio.html
And the table on this page: https://lastminuteengineers.com/esp8266 ... reference/

Of course this page should be your first reference when picking pins to use
https://espeasy.readthedocs.io/en/lates ... on-esp8266

The only ones which are safe to use are GPIO 5 & 4 (D1/D2)
Second best are GPIO 14/12/13 (D5/D6/D7)

[RaphV57]

Thank you!
I got tricked once again with this GPIO selection...

[TD-er]

Thank you!
I got tricked once again with this GPIO selection...

Happens to me all the time, that's why I created that table in the docs