Bluetooth Controller Idle Timeout Script

This script monitors input events from a Bluetooth game controller on a Linux system and powers off the controller after a specified period of inactivity. It uses the evtest utility to detect events and applies a deadzone to analog inputs to avoid unintended disconnections due to minor stick drift.

Features :

• Detects input events from a specified Bluetooth controller.
• Automatically powers off the controller after a configurable idle timeout.
• Ignores minor stick drift with configurable deadzone thresholds.
• Dynamically finds the input event device for the controller by name.

Requirements

• Linux system.
• evtest utility installed.
• A Bluetooth game controller.

Installation

1. Clone or download this repository.
2. Ensure evtest is installed :

Ubuntu

sudo apt install evtest

Fedora

sudo dnf install evtest

Arch

sudo pacman -S evtest

Configuration

Edit the script to configure the following parameters:

Controller Name

List input devices by name :

grep -E 'Name' /proc/bus/input/devices

Example output :

N: Name="Power Button"
N: Name="Asus Wireless Radio Control"
N: Name="HDA Intel PCH Headphone"
N: Name="PLAYSTATION(R)3 Controller Motion Sensors"
N: Name="PLAYSTATION(R)3 Controller"

Look for the Name= field corresponding to your controller.

Set the name of your controller as shown in /proc/bus/input/devices:

CONTROLLER_NAME="PLAYSTATION(R)3 Controller"

Idle Timeout

Specify the idle timeout in seconds:

IDLE_LIMIT=300

Deadzone Threshold

Define the deadzone for analog stick drift:

DEADZONE_THRESHOLD=150

Usage

The script will:

• Detect your controller's input event device automatically.
• Monitor input activity and turn off the controller after the specified idle time.

Manual Execution

Run the script manually with root privileges:

sudo ./controlleridle.sh

Run at Startup Using systemd

1. Create a Systemd Service File

• Create a service file for the script:

sudo nano /etc/systemd/system/controlleridle.service

• Add the following content to the file:

[Unit]
Description=Controller Idle Script - Turns off Bluetooth after inactivity
After=bluetooth.service

[Service]
Type=simple
ExecStart=/path/to/your/script/controlleridle.sh
Restart=always
User=your-username
Group=your-group
WorkingDirectory=/home/your-username

[Install]
WantedBy=multi-user.target

2. Reload systemd Daemon

• Reload the systemd daemon to recognize the new service:

sudo systemctl daemon-reload

3. Enable the Service

• Enable the service to start automatically at boot:

sudo systemctl enable controlleridle.service

4. Start the Service

• Start the service immediately:

sudo systemctl start controlleridle.service

5. Check Service Status

• Verify that the service is running:

sudo systemctl status controlleridle.service

Hyprland Spesific

For hyprland, use the following in your hyprland.conf to run at startup.

exec-once = /path/to/controlleridle.sh

Debugging

To see logs from the script, use:

sudo journalctl -u controlleridle.service

If the service fails, ensure the path to the script is correct and matches the ExecStart line in the service file.

Limitations

• Minor analog stick drift could prevent the controller from timing out if the deadzone threshold is too low.