Unit KMeter-ISO Home Assistant Integration

This section describes the configuration methods and practical steps for integrating the Unit KMeter-ISO sensor into Home Assistant.

Preparation

• MAX31855KASA+ Datasheet
• Protocol
• Get the latest configuration from ESPHome: KMeterISO ESPHome

Note

Unit KMeter-ISO is a standalone sensor platform and requires an additional main controller (such as Atom series, Stamp series, Stick series, Core/Basic series, etc.) to be integrated into Home Assistant.

Modify Configuration

1. The I²C component needs to be enabled in the ESPHome configuration:

# Example configuration entry for ESP32
i2c:
  sda: GPIOXX
  scl: GPIOXX
  scan: true

The GPIO pins here will vary depending on the main controller used. For example, using Atom Lite as the controller:

# I2C Bus on Grove Port (HY2.0-4P)
i2c:
  sda: GPIO26
  scl: GPIO32

Unit KMeterISO Configuration Example:

sensor:
  - platform: kmeteriso
    temperature:
      name: "KMeterISO Temperature"
    internal_temperature:
      name: "Internal Temperature"
    update_interval: 10s

Learn

Once added to the Dashboard, you can view the sensor data in Home Assistant.