# esphome-geiger-counter

*A half-assed attempt to put my geiger counter on Home Assistant.*

My [geiger counter from RH Electronics](https://www.rhelectronics.store/arduino-ide-geiger-counter-dosimeter-diy-kit-with-lcd) sends data over serial/UART.

- Wired/UART logs don't work. Use wireless logs.
- Only uSv is sent.

## Wiring

You'll need to use a logic level shifter to convert the 5v signals to 3.3v.


## Configuration

The status LEDs are configured using a ranging approach. The green LED turns on when
the uSv reading is below the configured `safe_level`. When the uSv reading is between
`safe_level` and `warning_level`, the yellow LED turns on. All readings above `warning_level`
trigger the red LED.


## Example HA Config for Statistics

```yaml
- platform: statistics
  name: "Radiation (μSv)"
  unique_id: geiger_counter
  entity_id: sensor.geiger_counter_raw
  state_characteristic: mean
  max_age:
    minutes: 1
```