sudo nano /boot/config.txt
# Disable Bluetooth
dtoverlay=pi3-disable-bt
#deshabilitar los servicios de bluetooth
sudo systemctl disable hciuart.service
sudo systemctl disable bluealsa.service
sudo systemctl disable bluetooth.service
#rpi 4
#apagar hdmi 1, para encender cambiar 0 por 1.
vcgencmd display_power 0 2
#apagar hdmi 2
vcgencmd display_power 0 7
#si queremos bajar el consumo a nivel de CPU
sudo nano /boot/config.txt
arm_freq=1400
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