IoT Water Level Monitor Build

I’m putting together a compact, battery-powered water-level monitoring unit that relies on a pressure transducer and pushes all readings straight to the cloud—no local storage. The core sensing element can be from RS Pro, Siemens, TE Connectivity, Huba Control, Encardio Rite, Honeywell, Rockwell or Schneider; whichever you’re most comfortable integrating, as long as accuracy and long-term stability are achieved.

Wireless connectivity is critical. The design must combine Wi-Fi 4, BLE 5 and an eSIM-based 5 G modem so the device can switch between Wi-Fi, Bluetooth and cellular coverage seamlessly. A GPS module is also required for real-time location tagging of each data packet. For wired interfacing and field maintenance, add USB and an RS-485 port; the latter will also serve as an alternate communication path when wireless links are restricted.

Power comes exclusively from an internal battery, so component choices, firmware sleep cycles and overall power budgeting need careful attention to maximise uptime.

Deliverables
• Schematic, PCB layout and complete BOM
• Embedded firmware enabling pressure reading, GPS tagging and data transmission over Wi-Fi, BLE, 5 G and RS-485
• Prototype build and bench demonstration showing successful cloud upload (MQTT, HTTPS or similar)
• Short user guide covering setup, OTA updates and field calibration

Acceptance criteria: The prototype must report accurate water-level data via at least two of the three wireless links plus RS-485, survive a 24-hour battery run-test and register its GPS location within 10 m accuracy.

If this aligns with your skill set in IoT hardware, embedded C/C++, and low-power design, I’d love to review your approach and timeline.