Bench Supply Meter

A bench supply with no display, given one that reads better than most. An INA219 sits across the output and reports voltage, current and power over I2C. The live screen is three tiles and a bar; the second sets the current you want warning about, which is a variable the spinbox writes and an automation reads. Nothing is switched: an INA219 measures, it does not interrupt. The banner tells you, and what you do about it is yours. Exports as ESPHome, so there is no compiler to install - one command flashes it.