Features

ESP8266 + (HC-SR04 or SN-SR04T-v3.0) collector & publish to MQTT for use in Home Assistant or Node-Red

• 10x samples read with 100ms delay between samples
• Publish sensor data to MQTT
• Apply Kalman filter to the average of the samples
• .ino file in the repo for the sn-sr04t-v3.0 waterproof sensor
• .ino file in the repo for the hc-sr04 sensor

ESP8266 & HC-SR04 Install & setup

Follow the Hacker.io Sample used as the source for this project

Home assitant vertical stacck in card

Check the hass folder for the configuration.yaml used and the vertical-stackin-card.yaml for presenting the data in the UI

Includes use of SimpleKalman filter library

• Take a look at this youtube video to see the Kalman Filter working on a stream of values!