Addresses the common "Not Powered" error where Bluetooth adapters are
powered off, preventing BLE operations. This issue is particularly common
on Raspberry Pi after boot or system updates.
Changes:
1. README.md - Added comprehensive troubleshooting section
- New section: "Bluetooth adapter not powered"
- Documented symptoms, causes, and 4 solution methods
- Instructions for automatic power-on at boot
- Cross-referenced from other sections
2. BLEInterface.py - Enhanced error handling in _discover_peers()
- Detect "Not Powered" errors specifically
- Show clear, actionable error messages instead of stack traces
- Provide direct solution commands
- Link to troubleshooting documentation
- Gracefully handle error without crashing
3. install.sh - Automatic power state checking
- New "Step 5B: Bluetooth Adapter Power State" section
- Check if adapter is powered using `bluetoothctl show`
- Automatically power on adapter if needed
- Verify operation succeeded
- Provide troubleshooting steps if power-on fails
- Check for rfkill blocks
4. examples/bluetooth-power-on.service - New systemd service
- Ensures Bluetooth is powered on at boot
- Optional but recommended for production
- Includes installation instructions in README
5. examples/config_example.toml - Added troubleshooting entry #7
- Documents power state issue in config comments
- Cross-references systemd service example
- Notes that installer (v1.x+) handles this automatically
Impact:
- Users get clear guidance instead of cryptic stack traces
- Installer automatically fixes the issue during setup
- Reduces support burden for common power state errors
- Enables automatic recovery at boot via systemd service
Fixes: "Not Powered" / "No powered Bluetooth adapters found" errors
Tested on: Raspberry Pi Zero 2 W with Raspberry Pi OS Lite 64-bit
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
