I designed this board last year, and it has been running reliably in my home with LD2420 and LD112F sensors on AC 220 V power. The firmware is built with ESPHome for Home Assistant integration.

Features:

• Radar Sensor Support: Compatible with LD2410B, LD2420, LD2450, LD1125F, and LD2461 (supports one sensor at a time). 
• RGB LED Control: Drives WS2812 LED strips through a TXS0104EDR level shifter IC.
• HVAC Integration: Works seamlessly with my open-source project [mitsubishi2MQTT](https://github.com/dzungpv/mitsubishi2MQTT). 
• Flexible Power Options: 

      • AC 100–220 V input with fuse and EMI filter. 

     • DC 4.5–40 V input via XL1509-5.0E1 regulator. 

     • Direct 5.0 V input.

•  External Sensor Ports: Three expansion sockets providing 3.3 V / 5 V power. 
• ESP Modules Supported: ESP32, ESP32-C3, ESP32-S2, ESP32-S3, and Wemos Mini boards (D1-MINI, S3-MINI, S2-MINI, C3-MINI) – Wemos Modules link https://www.wemos.cc
• Enclosure Ready: Fits a water-resistant 80 × 80 mm case.

Schematic and production-ready PCB design files and the full BOM are available for fabrication and assembly.

Assembly Notes 

• For AC power: Install U5, L2, F1, CN2, C9, R1. 
• For DC power (other than 5 V): Install U2, L1, C1–C6, D1. 
• For 5 V DC input: Simply plug in the ESP32 module and sensor — it works out of the box.
• If you want level shifter, install the U3