Smart meter and load-control prototype that displays live voltage, current, power, and energy while switching connected loads.
Overview
This product is an energy-monitoring and load-control prototype. The demo shows live electrical measurements on an LCD, keypad interaction, a relay/load-control section, and bench-connected loads. It can be used as the base for prepaid metering, lab load monitoring, appliance supervision, or energy-aware automation.
Measurement module feeds electrical data to the controller. Firmware updates the LCD, reads keypad commands, and switches the load-control stage according to the selected test or control mode.
Project photos
Energy meter demo with LCD readings, keypad, wiring, and load-control hardware.
Videos
Implementation details
Firmware
Firmware reads electrical parameters, calculates or displays voltage, current, power and energy, handles keypad input, and drives the relay/load-control hardware.
Power
Prototype handles mains-related measurement and switching; isolation, enclosure design, fusing, and wiring separation are important before field deployment.
Components / BOM
Microcontroller board, Energy measurement sensor/module, LCD display, Keypad, Relay or load-control module
Engineering challenges
Challenges include accurate measurement display, safe switching of connected loads, and keeping the UI clear while values change continuously.
Solutions
Used a bench prototype with a visible LCD, keypad, energy board, and load hardware so measurement and switching behavior can be verified together.
Results & metrics
Demo shows live energy-meter values and connected load-control hardware operating on the bench.
Future improvements
Add data logging, wireless telemetry, mobile dashboard, prepaid/token mode, calibrated enclosure, and improved electrical isolation.
