Hi,

I want to solder the relay expansion directly to the omega2+ due to needing for a smaller casing.

My Plan is to use input USB 5v via the regulator to 3.3 so that the onion is powered. (https://docs.onion.io/omega2-docs/hardware-prep-no-dock.html)

I've found the schematics for the relay but I'm bit confused because I don't know which pins are only needed for the relay and which are unnecessary.
https://github.com/OnionIoT/Onion-Hardware/blob/master/Schematics/Omega-Relay-Expansion.pdf

Which of the conedge pins are actually used because there is for example 3 times ground?

Here is my rough concept:

HI,

the Account throws a 500 error https://auth.onion.io/realms/onion/account/

And after registration i received two emails with links but none of them worked.

/best
Patric