Getting wifi up and running again meant looking up the command line options for network manager:

sudo nmcli dev wifi connect network-ssid password "network-password"

It is also possible to run the command for the connection editor for network manager which is:

nm-connection-editor

I added a couple of heatsinks to the board and I left the little system running on the desk for the rest of the day yesterday . Verdict: hot, but still touchable. It may need some kind of cooling if you strap this inside of a casing. Temperature is a thing that I will have to monitor and log.

Then there has to be a mention of the wifi antenna. I'll add it to the parts list, as this part didn't ship with the banana pi.

I could not find the exact order for this, as I bought a couple of these a long time ago, but it is similar to: 

https://nl.aliexpress.com/item/32729134494.html