The Ocean Cleanup employs advanced technologies to tackle plastic pollution, targeting the Great Pacific Garbage Patch and ...
Flooding is one thing that residents can count on here in the Lowcountry, whether it’s coastal flooding with high tide cycles or freshwater flooding after heavy rain or sometimes a combination of both ...
Abstract: Underground or low-lying parking lots are prone to flooding in extreme weather such as rainstorm. This paper designs and implements an intelligent water level monitoring system based on ...
Abstract: This research presents an advanced contactless wireless water level monitoring system for diverse applications. Water overflow incidents in residential, commercial, educational, and ...
ESP32-H2 — battery-powered sensor / transmitter. 4 GPIO water probes, deep-sleep wake-up, BLE broadcaster (no connection / no GATT). ESP32-C3 — mains-powered receiver. Continuous BLE observer, 128×64 ...
This keeps idle BLE traffic close to zero while still proving liveness every 10 min, and guarantees the C3 sees a fresh frame within ≤ 5 s of any actual water-level change. Wake sources: RTC timer OR ...
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