botmonster @botmonster.com · 15d

An ESP32-C3 Super Mini plus a reed switch and a VL53L0X turns your mailbox into a push notification for under $15 in parts. A reed switch alone fires every time the wind rattles the door. Reed, time-of-flight, or both on your build?

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botmonster · 15d

Hybrid build runs ~7 months on one 18650 cell. C3 deep sleep measures ~600 uA, not the spec's 43 uA. Aqara Zigbee lasts ~2 years but only reports open/close. https://botmonster.com/smart-home/build-diy-mailbox-notification-sensor-esphome/?utm_source=bluesky&utm_medium=social #SmartHome