Here is the essential INA219 Digital Gauge YAML snippet to add to your ESPhome YAML configuration.
For a step-by-step guide, watch the comprehensive tutorial available at the following link: Video
i2c: sda: GPIO21 scl: GPIO22 sensor: - platform: ina219 address: 0x40 shunt_resistance: 0.1 ohm id: ina_sensor bus_voltage: name: "tank_sender_voltage" id: tank_sender_voltage max_voltage: 32.0V max_current: 3.2A update_interval: 5s