This is the code for an IoT-based system to monitor the water flow in a specific area, such as a water cooler or a pipe leading to a tank. The data obtained can help us understand water consumption patterns (eg. how much water a person drinks per day) or abnormalities in water flow patterns (eg. low water flow can indicate a pipe leak). The system consists of 3 layers:
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Hardware: A water flow sensor, a microcontroller (an ESP32 was used by us in deployment), connecting wires and an OLED display, which would have to be deployed at the site.
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Cloud Storage: The data read by the sensor is sent by the microcontroller to a ThingSpeak channel (which must be created by you beforehand) and a OneM2M server.
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Software: A dashboard fetching data from ThingSpeak and presenting it in the form of charts. The metrics measured are water flow and volume. In addition, an admin dashboard is present at the
/adminroute which is protected via token-based authentication and provides features that could be used by admins, such as:- Remotely setting calibration factor
- Viewing WiFi downtime at the deployment site.
- Viewing status codes of requests made to OneM2M/ThingSpeak from the microcontroller.