Raspberry Pi Power Supply Checker

S.C.O.R.E. → Safety → Security

Overview

The Raspberry Pi Power Supply Checker capability provides a way to monitor the power supply status of your Raspberry Pi, ensuring it operates efficiently and safely. By checking for voltage and current anomalies, it helps prevent unexpected shutdowns and potential hardware damage.

Benefits

• Prevents unexpected shutdowns of the Raspberry Pi, safeguarding data and projects.
• Alerts users to power supply issues before they cause hardware damage.
• Enhances overall system reliability for home capability tasks.

Intent

This capability aims to monitor the power supply of the Raspberry Pi, ensuring it receives adequate voltage and current for optimal performance. The outcome is a stable and reliable operation of connected devices and applications.

Preconditions

• Raspberry Pi 4 must be powered and running.
• Home Assistant must be installed and configured on the Raspberry Pi.
• Power monitoring tool or integration must be set up in Home Assistant.
• Home Assistant installed and configured.
• Integration available and authenticated: Zigbee2MQTT.
• Device installed and reachable: Raspberry Pi.

Actors

• Homeowner monitoring home capability systems
• Family members utilizing Raspberry Pi-based applications
• Tech enthusiasts managing DIY projects

Trigger

The capability is triggered by periodic checks of voltage and current readings from the power supply.

Workflow Diagram

flowchart TD
    A[Check Power Supply] -->|Read Voltage| B{{Voltage within range?}}
    B -->|Yes| C[Power Supply OK]
    C --> D[Continue Operation]
    B -->|No| E[Alert User]
    E --> F[Log Issue]
    F --> D[Continue Operation]

Workflow Description

1. Initiate Power Check

The system starts a scheduled check of the power supply connected to the Raspberry Pi.

2. Read Voltage and Current

The Raspberry Pi reads the current voltage and current from the power supply via the configured monitoring tool.

3. Evaluate Power Status

The readings are evaluated to determine if they fall within acceptable ranges for proper operation.

4. Send Alert if Necessary

If the voltage or current readings are outside the acceptable range, an alert is sent to the user.

5. Log Power Supply Issues

Any issues detected are logged for future reference and troubleshooting.

Postconditions

After the capability runs, the system either confirms a stable power supply status or alerts the user to potential issues, ensuring continued operation of the Raspberry Pi.

Optional Enhancements

• Integrate with other home capability systems for alerts via SMS or email.
• Add a historical log of power supply performance for analysis.
• Implement automated responses to adjust power settings based on usage.

Recommended Components

Source Examples

• 2026.1: Home is where the dashboard is ?? – Home Assistant (homeassistant)