ESPresense v3 - Room level presence detection with ESP32 and Home Assistant 
Beginner DIY ESPHome mmWave Presence Sensor 
Prerequisites#
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- AHT20 BMP280 Temperature Humidity and Pressure Sensor
- Amazon: (5 pack) (Individual)
- Aliexpress: (AHT20 BMP280)
- Dupont Cable
- Amazon: (Dupont Cable 120 PCS Assorted)
- Aliexpress: (Dupont Cable Male to Male and Male to Female)
- Termoretractil Heat shrink tube
- Amazon: (Heat Shrink Tube)
- Aliexpress: (Heat Shrink Tube)
fixtSE DIY Sensor Case#
You can get it on:
Or order it from:
Save $5 on your first order using our link: https://pcbway.com/g/lHR6if
Remixes#
Clip for Top#
checkleylane made a clip to held the top of the original case
You can get it on:
MMwave Multi Sensor fixtSE LD2450#
F-Square made a new case for this project, with a lots of improvements:
- Rearranged the sensors inside the case (now the case can look up, instead of down).
- Added M3 Screws, so the body can be held in place easily.
You can get it on:
How to wire it up#
| ESP32 Board | BH1750 | AHT20 BMP280 |
|---|---|---|
| 3v3 | VCC | VDD |
| GND | GND | GND |
| D22 | SCL | SCL |
| D21 | SDA | SDA |
ESPHome Firmware#
Updated firmware to ESPHome 2024.6.3 version
The only difference between the two firmwares is the Bluetooth Proxy. If you don't need it, you can use the firmware without it.
You can find the documentation here
Bluetooth proxy could be an expensive task, if you experience any issues, try the firmware without it.
YAML Files#
v1.1.0:
Updated to support ESPHome 2024.6 new syntaxt
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I would love to hear your comments, or suggestions on this post.
Fixt is a Software Engineer passionate about making the world a better place through technology and automation.