I have a question about the circuit of my ESP32 project. I'm going to run 12 pcs CPU-fans/caged-fans with a 12V DC power supply, and I would like to know if it's safe to power the ESP32 with the same power supply. I read that I can connect the 12V to pin Vin pin. My only concern is if its safe for the board to be connected to the same power supply as the fans.
Side note: the fans are PWM controlled by the ESP32 and there is a DHT11 connected to 3,3V power output on the ESP32.