PoolPal

Home Assistant custom integration that adds a calibrated sensor (cm) to an existing MQTT device.

How it works

1. Install via HACS as a custom repository
2. Add the PoolPal integration via Settings → Devices & Services → Add Integration
3. Step 1: Select a manufacturer to filter the device list
4. Step 2: Choose an existing device from your HA device registry
5. Step 3: Enter the MQTT topic for raw data and a calibration factor

The integration subscribes to the MQTT topic and creates a sensor entity on the selected device:

calibrated_value (cm) = mqtt_raw_value × calibration_factor

Example

If a device publishes 150 on topic pool/pump/flow_raw and you set a calibration factor of 0.1, the sensor will report 15 cm.

Installation

1. Add this repository to HACS as a custom integration repository
2. Install PoolPal from HACS
3. Restart Home Assistant
4. Go to Settings → Devices & Services → Add Integration → PoolPal