Problem with debugging a chicken door project

[nicolas_schlafer]

@hcb007

you say "banana connectors" I think of the style of connector commonly used on multimeters. I've had some really shoddy ones on a cheap, Chinese multimeter many years in the past...I'm not a huge fan. I cannot say definitively whether you should or should not use them, but I can say I would look at them very carefully. The ones I encountered and hated had slits in the male pin like a + sign and the only "springiness" was minimal. The "springiness" was not really good at making constant connection and the pins seemed fragile in terms of being able to bend the 4 petals ever so slightly,

Yes it was exactely these connectors, with the "petals", and exactely the problem, the connection had small micro cuts with very little movement/shakling of the connectors.

I replaced the connectors and now everything seems to work as intended, since 4-5 days already