Server 16 issues

[podlak]

Hello,
I started working over new home automation project and I bought Server 16 with raspberry pi & nodered. Board is working fine with rs485 sensors, but I'm planning to use relays to control electric circuits and I have two major difficulties :
1) by default I want to have circuits off (NC), I changed settings of all relays in nodered to invert switches, but when board starts it triggers all relays for a moment ON and after moment all goes to OFF. It means that all connected electric equipment will start for a less a second - this is very unwanted behaviour, how to avoid that?
2) I'm planning to use digital inputs to control relays with momentary buttons, but input seams to be connected with relays and input has to be shorted with GND all the time, how to change that, so relay will be toggled wen button is pushed for a moment?  I don't want to use bistable buttons, as relay will be connected with nodered and homeassistant in parallel and wall buttons will have different state than circuit 

Beet regards 
Podlak

[admin]

1. how about you connect with a extend relay module for NC, such as KC868-E16v2 relay module? so that you not need to use "invert" option.

2. sure, it's ok work with momentary switch. just set by node-red. let digital input work with push button mode. when pressed button, toggle relay.