UPD
Multi-target mmWave presence detection at your fingertips...literally.
View on GitHub
Buy on TES-shopUPD - mmWave Presence Detection
This is probably the smallest LD2450-based sensor you'll ever see on the market. Our competitors won't be able to make it tinier without using a different module—that's for sure!
Key Features
- ESP32-C3FH4 MCU with integrated PCB antenna (Wi‑Fi + BLE)
- LD2450 header pins for direct module mounting—no adapters, no hassle
- On-board I²C lux sensor for ambient light detection
- USB-C powered for universal connectivity
- 3.3 V LDO for clean, stable power delivery
- Ultra-compact form factor—as small as physically possible
Connectors & Pin‑out
| Label | Type | Description |
|---|---|---|
| USB-C | Connector | 5 V power input |
| LD2450 | Header pins | Direct mount for LD2450 mmWave module |
| I²C | Pads/Header | Lux sensor interface (directly on-board) |
| BOOT | SMD button | Hold low for ESP32 flash mode |
| RST | SMD button | Manual reset (grounds EN pin) |
Power Architecture
- USB-C input provides 5 V supply
- 3.3 V LDO regulates power for the ESP32-C3 and peripherals
