Lots of parts are unavailable from good distributors at this point, so I am being forced to go to black-market devices, and not everything is available even there. Right now it looks like the connectors used on all the prototyping boards are gone until maybe late March through late May. That is not good.
At my full-time job most of my time is dedicated to taking code from processors we can not longer get and porting to several other chips, hoping to get any of them in the quantities we need to continue production. I spend hours a week talking directly to chip manufacturers trying to see if we can get anything in large quantities for the near future, usually with no luck. One large company told us they are not accepting any new customers because they cannot even provide enough chips to existing customers!