Battery Status LED

Battery (low/critical) status indication by making a (the capslock) LED blink

Prerequisites:

Make sure you have your laptop's ACPI module compiled into your kernel:

Device Drivers > X86 Platform Specific Device Drivers

For example: Asus laptop extras, ThinkPad ACPI Laptop Extras, etc.

Usage:

Execute the script as a root user:

/usr/bin/battery-status-led.sh

Or start with systemd:

systemctl start battery-status-led
systemctl enable battery-status-led

The LED device can be changed by editing the systemd service file's line:

Environment="BATTERY_STATUS_LED_DEV=/sys/class/leds/input4\:\:capslock"

Manual install on gentoo:

cd DIR
git clone https://github.com/dmatetelki/battery-status-led
cd /usr/local/portage/app-misc/
ln -s DIR/battery-status-led/app-misc/battery-status-led  battery-status-led
ebuild battery-status-led-0.1.ebuild digest
emerge battery-status-led

Creating a debian package and installing it:

cd DIR
git clone https://github.com/dmatetelki/battery-status-led
cd battery-status-led/debian
./package.deb
sudo dpkg -i ./batterystatusled_0.1-1.deb

Creating RPM package and installing it:

cd DIR
git clone https://github.com/dmatetelki/battery-status-led
cd battery-status-led/redhat
./package.rpm
sudo rpm -i ./battery-status-led-0.1-1.noarch.rpm

Note:

Did you know that the CapsLock key can be turned into another Ctrl? Add the following lines to ~/.Xmodmap :

remove Lock = Caps_Lock
keycode 0x42 = Control_L
add Control = Control_L