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SmartHomeShopIO Ceiling-mounted All-in-One Sensor (CeilSense)

SmartHomeShopIO Ceiling-mounted All-in-One Sensor (CeilSense)

Made for ESPHome Logo

Device Type: sensor
Electrical Standard: aueuglobalukus
Board: esp32
Difficulty: Comes with ESPHome, 1/5

CeilSense

Description

CeilSense is a recessed, all-in-one smart room sensor for ceilings (and walls) that combines 24 GHz mmWave presence (HLK-LD2412), ambient light (BH1750), barometric pressure (BMP3xx), optional CO₂/Temperature/Humidity (SCD41), plus a ring of 16 individually addressable WS2812 RGB LEDs.
Power it via 110–240 VAC, USB-C (5 V), or PoE Ethernet. It fits a standard 68 mm (GU10) cut-out; visible trim ring ≈ Ø 82 mm.

Highlights

  • Reliable presence detection (micro-motion) with HLK-LD2412
  • BH1750 ambient light + BMP3xx pressure (always present)
  • 16× WS2812 status/ambient ring
  • Complete variant adds SCD41 CO₂/Temp/Humidity
  • Wi-Fi or Ethernet (PoE) firmware variants; OTA with ESPHome
  • Fully local and open source; maintained in the CeilSense GitHub repo

Specs at a glance

  • Cut-out: 68 mm, install depth ≈ 45 mm (allow ~+15 mm with RJ45 plug)
  • LEDs: 16× WS2812, individually addressable
  • Radar: HLK-LD2412 (24 GHz), tuned ESPHome config
  • Sensors (Basic): BH1750 (illuminance) + BMP3xx (pressure) + LD2412 (presence)
  • Sensors (Complete): Basic + SCD41 (CO₂/Temp/Humidity)

Variants

  • CeilSense Basic — LD2412 + BH1750 + BMP3xx + 16× RGB ring
  • CeilSense Complete — Basic + SCD41 (CO₂/Temp/Humidity)

Ethernet/PoE builds are separate YAMLs. Flash the Ethernet variant if you plan to use Ethernet (with or without PoE).

Quickstart

  1. Install the device in a 68 mm cut-out; connect mains or USB-C; optionally RJ45 for PoE.
  2. Onboard
    • Wi-Fi builds: join CeilSense AP → provide Wi-Fi credentials of your network → appears as Discovered in Home Assistant.
    • Ethernet builds: plug UTP → gets DHCP → appears as Discovered in Home Assistant.
  3. Adopt in ESPHome / Home Assistant and tune (radar thresholds, LED effects).

Please check our full documentation and Quick Start Guide: https://smarthomeshop.io/quick-start-ceilsense

Support & Links

Top viewIn-ceiling (cut-out)
Top view In ceiling
Bottom view
Bottom view
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