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Esp32.co.uk
  • Home
  • Home Assistant Integration
  • Getting Started
    • ESP32 Boards & Modules
    • Sensors & Components
    • Schematics
    • Tools & Accessories
  • Projects
    • Smart Home
    • Automation & Control
    • Environment & Weather
    • Automotive Electronics
  • STM32 Guides
  • Raspberry Pi Guides
  • News
  • Troubleshooting & Tips
  • Code Snippets
Esp32.co.uk
  • Home Assistant Integration

ESP32 Indoor Air Quality Station: SCD41 + SGP40 + PMS5003 + SHT45

Quick Summary (TL;DR):A serious Home Assistant indoor-air-quality station should not try to turn one cheap “air quality” sensor into everything. Use SCD41 for true CO₂, SGP40 for VOC Index, PMS5003 for PM1, and SHT45 for the primary room temperature and…

  • panakos
  • 3 September 2026
  • Home Assistant Integration

PMS5003 ESPHome Troubleshooting: UART, Sleep Mode & Bad PM Readings

Quick Summary (TL;DR):Most PMS5003 + ESPHome problems come from five areas: UART wiring, wrong sensor type, unstable power or airflow, misunderstanding active/passive mode, or mistaking real particulate spikes for bad data. The normal PMS5003 uses 9600 baud. For continuous monitoring,…

  • panakos
  • 3 September 2026
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