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Setup NodeJS Project Space on Raspberry Pi Zero W To disable Wi-Fi and Bluetooth, open /boot/config.Setup i2c on Raspberry Pi Zero W using Arch Linux If your solution isn’t using Wi-Fi or Bluetooth, you can disable them or just one of them. To re-enable the HDMI output when you need it back use this command:Īfter a reboot HDMI output is enabled automatically Disable Wi-Fi and Bluetooth To disable the HDMI output on your Raspberry Pi, execute the following command: I thought this was a great way to save power on my upcoming project…then remembered I’m using a USB powered Wi-Fi adapter 🤦🏻‍♂️ Disable HDMI Output To re-enable the USB controller when it’s needed again:Įcho '1-1' |sudo tee /sys/bus/usb/drivers/usb/bindĪfter a reboot the USB controller will be enabled automatically. To disable the USB controller on your Raspberry Pi execute the following command:Įcho '1-1' |sudo tee /sys/bus/usb/drivers/usb/unbind The following are a couple of tips for reducing consumption. If you’re running a project whereby your device is running off an external battery then every ounce of power saved counts! Model IDLE LXDE Loaded 1080 resolution video 400% CPU Loaded Raspberry Pi 4B 575 mA 885 mA 600 mA 1280 mA Raspberry Pi 3B+ 400 mA 690 mA 510 mA 980 mA Raspberry Pi Zero W 120 mA 160 mA 170 mA – Raspberry Pi Zero 100 mA 140 mA 140 mA – You will need the following text in the file. To setup a Wi-Fi connection on your headless Raspberry Pi, create a text file called wpa_nf and place it in the root directory of the microSD card. When it sees the “ssh” on its first boot-up, the OS will automatically enable SSH. Write an empty text file named “ssh” (no file extension) to the root of the directory of the card. Do not remove the microSD card yet! Enable SSHĪs this is a headless setup whereby we will not be using a monitor/keyboard/mouse we need to set up remote access via SSH. This process will take a while as the image is transferred to the microSD and is then verified. Kali Linux then select Use custom at the bottom of the list.ĥ.Click Choose SD card and select your card from the menu.Ħ. A menu appears.Ĥ.Select the OS that you want imaged to your microSD card, if it’s one you’ve download i.e. Installing preferred OS on the microSD card.ĭownload, install and run the Raspberry Pi Imager This post details how to set up a headless Raspberry Pi 4 and fine tune the power consumption as it will be running off of a USB battery pack.

In preparation of a research project (details to follow soon) coming up I’ve had to do some prep work in regard to the hardware I’ll be using.