Project: Smart Switch with Energy MeterRelay + PZEM004T + safety + web control.2025-09-18 · ~1 min readEsp32 Projects#project #relay #energy
PZEM004T v3: Energy Monitoring BasicsRead voltage/current/power — safety notes included.2025-09-18 · ~1 min readEsp32 Basics#pzem004t #energy #uart