Note: This application requires sysmon-server running on a Linux PC.

SysMon connects a Nintendo 3DS to a Linux PC over local Wi-Fi to display system telemetry and provide remote input controls.

Features

• Telemetry: Displays PC CPU usage, CPU/GPU temperatures, clock frequencies, fan speeds, free RAM, uptime, and weather.
• Gamepad Controller (CTRL): Low-latency UDP controller mapped to the Linux uinput virtual gamepad driver.
• Macro Deck (MACRO): Triggers custom commands, shell scripts, and keyboard shortcuts via touch buttons or 3DS buttons (A/B/X/Y).
• Audio Level Mixer (LEVEL): Adjusts volume and mute states for active audio applications via PulseAudio or PipeWire.
• Media Controls (MEDIA): Controls playback (play, pause, skip) and displays track metadata via MPRIS.
• Process Manager (KILL): Displays high-CPU processes and allows terminating unresponsive applications.
• Focus Timer (POMO): Built-in Pomodoro timer.
• Settings (SET): Supports multiple server profiles, theme switching, and audio feedback.

Setup

1. Download and run sysmon-server on your Linux PC (cargo build --release or install the RPM package).
2. Open the SET tab in SysMon on your 3DS and enter your PC IP address and port (default: 7341).
3. For gamepad functionality, ensure your Linux user account has write access to /dev/uinput.

Source code and server downloads are available at the GitHub Repository.