



Prerequisites#
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- AHT20 BMP280 Temperature Humidity and Pressure Sensor
- Amazon: (6 pack) (2 pack)
- 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 2024.12.4
Added OTA support
Firmware | Sensor Name |
---|---|
With Bluetooth Proxy | uesp-sensor |
Without Bluetooth Proxy | uesp-sensor-no |
YAML Files#
v1.2.0:
Added OTA support (deactivated by default)
Changed bmp280 to bmp280_i2c