Sensor is based on an ESP-M3 and Plantronix PMS7003, specialy created for Home Assistant, software is based on Esphome
Device is build based on custom desing PCB for small size, it only need wires to 5V and aditional LED (was added after designed PCB)
Components:
- ESP-M3
- Mini 360 buck converter
- PMS 7003 header (should by in box with sensor)
- optional temperature sensor BME 280 / BMP 280
- optional LED WS2812B mini pcb
Connecting is simple, just solder pms header, ESP-M3 and mini360 on PCB, connect optional BME 280 temperature sensor
Additional LED (WS2812B) can be connected by wires to pin GPIO2
In Stl folder You can find cases for sensor with aditional BME280 temperature sensor and LED for status
Sample firmware is in YAML folder, just change SSID nad Password.