Project · Hardware

Silent Relay

Local-first smart home control with offline-safe defaults and a calm interface.

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Overview

Goal
Make smart home control reliable, quiet, and independent of the cloud.
Approach
Local-first relay unit, redundant input paths, and a simple iOS control surface.
Result
Consistent control latency under 100ms and zero dependency on external services.

Build details

Stack
ESP32 + custom PCB
iOS app (SwiftUI)
Local MQTT broker
Highlights
Offline mode with safe state caching
Hardware failsafe switch
Minimal UI with haptic feedback

Notes

Easter egg
There’s a silent “panic mode” for guests who press every switch.