Build a Human Presence Sensor using ESP32 & LD2410C with ESPHome.

Published at : 23 Dec 2025

It's a step-by-step guide to DIY a human presence sensor using hardware like ESP32 and LD2410C with the ESPHome. The human presence sensor will integrate into Home Assistant and create automation to control the smart light switch.

[ Chapters ]
0:00 Opening
0:15 Introduction & the DIY human presence sensor plan
0:52 Preparation - ESP32, LD2410C and others
1:28 Flash ESPHome firmware
4:03 Assemble ESP32 and LD2410C
4:34 Integrate the human presence sensor into Home Assistant
5:29 Usage Experience
7:02 Final Thoughts
7:26 Extra

[ Link ]
- Get starting with Ready-Made Projects: https://esphome.io/projects/
- ESPHome LD2410 Documentation: https://esphome.io/components/sensor/ld2410/

[ Hardware ]
- Node MCU ESP32-C Microcontroller
- LD2410C 24GHz mmWave Radar Sensor
- Mini Breadboard
- Jumper Wires
- USB cable
- 2A USB Power Adapter

[ Related Blog Post ]
https://juantechblog.github.io/posts/diy-human-presence-sensor-esp8266-ld2410-esphome-integrate-home-assistant/

[ Video Mentioned ]
https://youtu.be/-818AtI2M_g

[ Attributes ]
- Sensors icons created by Arkinasi - Flaticon
- Motion icons created by Designing Hub - Flaticon
- Male icons created by Freepik - Flaticon
- Radar icons created by Freepik - Flaticon
- Light switch icons created by VectorPortal - Flaticon
- The Chromium Development Documentation Project [1] / "The Chromium Authors" as per the open source development agreement, Public domain, via Wikimedia Commons
- Microsoft Corporation, MIT (http://opensource.org/licenses/mit-license.php), via Wikimedia Commons

#esp32 #esphome #homeautomation

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