Pi Health

Raspberry Pi health monitor. Check CPU temperature, throttling status, voltage levels, memory/disk usage, fan RPM, overclock detection, and power issues. Use when monitoring Pi health, diagnosing thermal throttling, checking for under-voltage, or verifying system stability on any Raspberry Pi (Pi 3/4/5, arm64/armhf).

Run the health check script:

bash scripts/health.sh

What It Checks

Check	Source	Warning	Critical
CPU Temperature	thermal_zone0	>70°C	>80°C
Throttling	vcgencmd get_throttled	any flag set	under-voltage
Voltages	vcgencmd measure_volts	—	—
Memory	free -m	>75%	>90%
Disk	df /	>75%	>90%
CPU Frequency	cpufreq sysfs	—	—
Load Average	/proc/loadavg	>nCPU	>2×nCPU
Fan	hwmon sysfs	—	—
Overclock	config.txt	detected	—
Power	dmesg	—	under-voltage

Exit Codes

• 0 — Healthy (all checks passed)
• 1 — Warnings (non-critical issues)
• 2 — Critical (needs immediate attention)

Requirements

• Raspberry Pi OS (Bookworm or later)
• vcgencmd (optional but recommended — comes with libraspberrypi-bin)
• bc (standard on Pi OS)
• No external dependencies or API keys