grep --tag "Raspberry Pi" ./posts
# Tag: Raspberry Pi

Garden Watering Safety: Sensors, Pumps, and Stop Conditions
A pre-automation safety review of M5Stack Unit Watering: calibration, short supervised trials, stop conditions, and unresolved hardware limits.

Bath Automation Safety: Observe State Before Toggling
Why unknown-state toggles must not be retried, and why an unapproved remote prototype needs observation, explicit stopping, and supervised use.