ENS160 with ESP32 and ESPHome: VOC, eCO₂ and Air Quality Index Explained
PZEM-016 with ESP32 and ESPHome: RS485 AC Energy Monitoring
Quick summary: The PZEM-016 measures single-phase AC voltage, current, active power, frequency, power factor and accumulated energy. Its external current transformer (CT) goes around one conductor; its mains measurement terminals sense the circuit voltage; and its RS485 port sends the…
MAX31865 with ESP32 and ESPHome: PT100/PT1000 Temperature Monitoring
SPS30 with ESP32 and ESPHome: PM1, PM2.5, PM10 and Home Assistant
ESP32 CO₂-Controlled Ventilation with ESPHome and Home Assistant: SCD41, Hysteresis and Fail-Safes
SEN55 with ESP32 and ESPHome: PM2.5, VOC, NOx and Home Assistant
BL0942 with ESPHome: UART Smart Plug Power and Energy Monitoring
BL0942 UART metering with ESPHome: compatible smart-plug hardware, calibration, kWh resets, Home Assistant energy and essential electrical-safety precautions.
ADE7953 with ESPHome: Dual-Channel AC Power Monitoring and Shelly 2.5
ESPHome setup and safe measurement guidance for two-channel ADE7953 AC power monitoring, including the Shelly 2.5, calibration and Home Assistant energy tracking.
MH-Z19B with ESP32 and ESPHome: UART CO₂ Monitoring and Calibration
Connect an MH-Z19B CO2 sensor to ESP32 and ESPHome via 9600-baud UART. Covers safe 5 V wiring, warm-up, automatic baseline calibration, manual zero calibration, Home Assistant ventilation and troubleshooting.