I'm currently doing a home automation project which involves my intercom system being controlled by a NodeMCU. The intercom system runs off 12V AC. As for the actual automation/wiring itself, I think I have that fairly well covered. However, I would love to be able to power the NodeMCU directly from the 12V AC rather than having to bring in an extremely long extension cord just to supply 5V DC.
Whilst I am aware that there are plenty of options available for getting 5V DC from 12V DC, I have been almost completely unsuccessful in finding a simple convertor to do exactly what I intend at a low price.
I would really appreciate it if someone could give me some guidance as to how they may think to overcome this problem.
Thank you in advance for any help.