Built an IoT-based Demand Side Management (DSM) Smart Meter using ESP32 + MicroPython + Blynk
Just wrapped up Day 78 of my #100DaysOfIoT challenge — built a DSM Smart Metering Prototype that automatically shifts non-critical loads during peak hours.
What it does:
- Monitors real-time AC voltage & current (ZMPT101B + ACS712)
- Detects peak hours and auto-cuts the heavy load (iron/100W bulb)
- Keeps critical load (fan/9W bulb) always ON
- Pushes live data to Blynk IoT dashboard
- MATLAB generates before/after comparison graphs
Results:
| Metric | Without DSM | With DSM |
|---|---|---|
| Peak Power | ~108W | ~9W |
| Peak Reduction | — | ~91% |
Stack: MicroPython v1.27 · ESP32 WROOM-32 · ZMPT101B · ACS712 · Blynk IoT · MATLAB
🔗 GitHub: https://github.com/kritishmohapatra/100_Days_100_IoT_Projects
Posted Apr 15, 2026, 7:36 PM UTC
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