How do you reduce the power consumption of a Raspberry Pi?
Reducing the power consumption of a Raspberry Pi is important for battery-powered or energy-efficient projects. Here are practical steps to reduce power usage, applicable to most Raspberry Pi models (especially Pi 3 and Pi 4 ): Top Methods to Reduce Power Consumption 1. Disable HDMI Output If you're not using a display: bash /opt/vc/bin/tvservice -o To re-enable it: bash /opt/vc/bin/tvservice -p 2. Turn Off Wi-Fi and Bluetooth If wireless communication is not needed: bash sudo rfkill block wifi sudo rfkill block bluetooth Or, in /boot/config.txt , add: bash dtoverlay=disable-wifi dtoverlay=disable-bt 3. Lower the CPU Clock Speed You can underclock the CPU to reduce power usage: Edit /boot/config.txt : bash arm_freq=600 Add optional: bash core_freq=250 sdram_freq=400 over_voltage=-2 Note: underclocking can reduce performance. 4. Disable Unused Interfaces Disable unused ports like camera, audio, I2C, SPI, etc. In raspi-config : ba...