Hey, i'm sure someone has come across this before but I don't know where to post it and can't find anything in the search. I have a 5V pro mini, and a 3.3V XBee. I want to power both of these off of a 9V power supply. If i hook everything up without regulating anything the pro mini powers up fine, …

Power Supply

Topic		Replies	Views
Xbee with arduino pro mini 5v Networking, Protocols, and Devices	4	2803	May 6, 2021
mixing 3.3V and 5V in a very tiny space Interfacing	8	3344	May 6, 2021
xbee + arduino mini 3.3v Interfacing	2	1455	May 6, 2021
XBEE voltage drop General Electronics	5	2087	May 6, 2021
power regulator for Xbee? Development	7	3150	May 6, 2021