Alexa-Enabled Smart IoT ELECTRICITY METER SWITCH BOARD

Imagine tracking power-line voltage, frequency, current draw, and appliance power consumption through a smart switch plug.

- ASHWINI KUMAR SINHA

Real-time data is continuously logged to a database, enabling instant energy-use calculation, billing estimation, and live device control. The system integrates with popular AI assistants and smart speakers, including Alexa, Google Home, Google Assistant, Apple HomeKit, and the ESP RainMaker app. Appliances can be operated through voice commands, automation rules, or a touch-based switchboard.

ESP RainMaker is an end-user platform built for production-ready IoT devices. It enables firmware development and complete IoT solution design for large-scale deployment. Core features include device monitoring, over-the-air firmware updates, and centralised device management, streamlining the transition from prototype to production and market launch. The platform also manages WiFi provisioning, device onboarding, and firmware control, similar to commercial smart plugs and bulbs. A dedicated home application provides a unified interface for parameter monitoring, remote appliance control, and mesh-network creation to ensure reliable connectivity.

Dedicated current and voltage sensors measure electrical parameters accurately. By combining data from both sensors, real-time energy consumption is calculated. Based on this information, advanced features such as over-voltage and over-current protection, automatic low-power mode, and energy-usage-based automation are implemented.

For example, the system can automatically turn off high-power appliances when the electricity bill reaches a predefined limit, or shut down all connected loads if total consumption exceeds a specified threshold within a billing cycle. Such tightly integrated, energy-aware automation was not feasible in earlier designs.