Updated: Jun 27, 2024—3 min read

Ultimate ESPHome DIY Smart Sensor

Written by: Fixt
mmWave Sensor
Side a
Side b
Inside
ESP32

HLK-LD2450 Presence Sensor

BH1750 Light Sensor

AHT20 BMP280 Temperature Humidity and Pressure Sensor

Prerequisites

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BH1750 Sensor
AHT20_BMP28 Sensor
Dupont cable
Termoretractil 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

How to wire it up

Wire Up
ESP32 BoardBH1750AHT20 BMP280
3v3VCCVDD
GNDGNDGND
D22SCLSCL
D21SDASDA

ESPHome Firmware

Updated firmware to ESPHome 2024.6.3 version

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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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Avatar of Fixt

Fixt is a Software Engineer passionate about making the world a better place through technology and automation.