Projects, Performance and Reliability

Keeping a Pi healthy

• Cooling: Pi 5 and Pi 4 throttle when hot; use a heatsink and fan or the official active cooler. Check with vcgencmd measure_temp and vcgencmd get_throttled.
• Power: under-voltage causes random crashes and corruption; use the official supply and powered USB hubs for drives.
• Storage: SSDs are faster and far more durable than SD cards for servers.
• Shutdown properly (sudo shutdown -h now); pulling power can corrupt the filesystem.

Monitoring

Use Uptime Kuma or a small script reporting temperature, disk usage and service health to a dashboard or notification service.

Updates

Keep the OS, firmware (sudo rpi-eeprom-update) and containers updated; schedule maintenance and check that services come back after reboots.

Project ideas

• A family dashboard (calendar, weather, bins day) on a wall display.
• A time-lapse camera for plants or construction.
• A network ad blocker with usage graphs.
• A learning server running your own Flask projects and databases.
• A retro gaming console.

Final project

Build a home server on a Pi booting from SSD: Home Assistant with an ESP32 sensor over MQTT, a Flask dashboard showing sensor history from PostgreSQL, Uptime Kuma monitoring, Caddy reverse proxy, Tailscale remote access, automatic updates, nightly off-device backups and documented recovery steps.

Check yourself

• What does vcgencmd get_throttled reveal?
• Why are SSDs better than SD cards for servers?
• Why shut a Pi down properly?