Presence Detector Case (ESP32 C3 Mini + LD2410C)
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Description
I built a very compact presence detector for ESPHome (Home Assistant) using an “ESP32 C3 Super Mini” and an “LD2410C” sensor. For this, I have a suitable case here that is very small (L: 33mm x W: 23mm x H:13mm).
The following components were used:
- ESP32 C3 Super Mini (AliExpress)
- LD2410C (AliExpress)
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Construction:
The two boards were soldered directly on top of each other to require as little space as possible. Power is supplied via the ESP32's USB-C port (power consumption 0.4 - 1.1W)
Pins ESP32 → LD2410C:
5V → VCC
G → GND
4 → RX
3 → TX
(the “OUT” pin in the middle of the LD2410C must be removed and must not have any connection to pin “3.3” of the ESP32)
I have linked the Yaml code for ESPHome here as a .txt file
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