ESP-Hydropony Light Monitor

The ESP-Hydropony Light Monitor is a Wi-Fi enabled lux sensor designed for hydroponic and indoor growing environments.

The device measures ambient light using a BH1750 sensor and exposes the value locally over HTTP. It is designed for users who prefer local-only monitoring without cloud dependency.

Images

Assembled device

ESP-Hydropony Light Monitor assembled

PCB

ESP-Hydropony Light Monitor PCB

Lux display

ESP-Hydropony Light Monitor lux display

ESPHome Integration

The device exposes a JSON endpoint at /json returning a numeric lux value.

Example response

{
  "lux": 1234.5
}

sensor:
  - platform: rest
    name: "Hydropony Lux"
    resource: http://DEVICE_IP/json
    value_template: "{{ value_json.lux }}"
    unit_of_measurement: "lx"
    device_class: illuminance

    scan_interval: 10s

ESP-Hydropony Light Monitor​

Images​

Assembled device​

PCB​

Lux display​

ESPHome Integration​

Example response​