fresh-home/esphome/bed-presence/sensor.yaml

substitutions:
  # Calibrate Trigger Percentile
  # This controls how the trigger threshold is set during calibration. During calibration, the unoccupied and occupied
  # pressure values are determined. This is the percentage of the difference between those values required to trigger
  # the "occupied" state.
  #     - 0.75  Requires 75% of the occupied pressure to trigger (DEFAULT)
  #     - 0.50   Set trigger exactly in the middle of unoccupied and occupied pressures
  #     - 0.25  More sensitive, likely to be triggered by partner
  trigger_percentile: '0.75'

  # Window Averaging Samples
  # Add a sliding window moving average to the incoming sensor samples. This specifies the number of samples to average
  # over. Each sample is 1/2 second.
  #     - 1   Don't perform averaging
  #     - 5   Average over 5 samples (2.5 seconds) (DEFAULT)
  #     - 10  Average over 10 samples (5 seconds)
  averaging_window_samples: '5'

  # Fast Sensor Delay
  # This controls how long the "Fast" sensor must register "unoccupied" or "occupied" before reporting. Averaging or
  # delay is encouraged to prevent frequent false negatives as you shift in bed.
  #     - 2s    Same response as standard sensor
  #     - 500ms Good starting point for getting speed without too many false negatives
  #     - 0ms   No delay (DEFAULT)
  fast_delayed_on: '0ms'
  fast_delayed_off: '0ms'

  # Standard Sensor Delay
  # This controls how long the standard sensor must register "unoccupied" or "occupied" before reporting. Averaging or
  # delay is enocuraged to ensure stability.
  standard_delayed_on: '0s'
  standard_delayed_off: '1s'

  # Slow Sensor Delay
  # This controls how long the "Slow" sensor must register "unoccupied" or "occupied" before reporting. Averaging or
  # delay is encouraged to ensure stability.
  slow_delayed_on: '2s'
  slow_delayed_off: '5s'

  # Reporting Delta
  # The sensor must change by this amount before an update is sent (or the reporting_interval_max has been hit)
  #     - 10.0  Only report very large changes
  #     - 1.0   Relatively sensitive with much less reporting (DEFAULT)
  #     - 0.1   Very sensitive, will report frequently
  reporting_delta: '1.0'

  # Reporting Interval (Max)
  # The max amount of time between sensor reports (even if the value hasn't changed)
  reporting_interval_max: '180s'

  # Linear Calibration Points
  # Change the linear calibration points for the FSR sensor. These values correspond with the raw pulses per minute from
  # the pulse_counter. Only mess with this if you know what you're doing. In standard mode (Full Range = False), the
  # sensor is linearly calibrated between calibrate_0 (0%) and calibreate_100 (100%). When Full Range = True,
  # calibrate_0 is set to 0.
  calibrate_100: '408000'
  calibrate_0: '276000'

binary_sensor:
  - platform: template
    name: Bed Occupied ${sensor_name} (Fast)
    id: bed_occupied_${sensor_id}_fast
    device_class: occupancy
    icon: mdi:speedometer
    disabled_by_default: true
    filters:
      - delayed_on: ${fast_delayed_on}
      - delayed_off: ${fast_delayed_off}
    lambda: return id(bed_sensor_${sensor_id}).state > id(val_trigger_${sensor_id}).state;

  - platform: template
    name: Bed Occupied ${sensor_name} (Normal)
    id: bed_occupied_${sensor_id}_normal
    device_class: occupancy
    icon: mdi:speedometer-medium
    disabled_by_default: true
    filters:
      - delayed_on: ${standard_delayed_on}
      - delayed_off: ${standard_delayed_off}
    lambda: return id(bed_sensor_${sensor_id}).state > id(val_trigger_${sensor_id}).state;

  - platform: template
    id: bed_occupied_${sensor_id}_slow
    name: Bed Occupied ${sensor_name} (Slow)
    device_class: occupancy
    icon: mdi:speedometer-slow
    disabled_by_default: true
    filters:
      - delayed_on: ${slow_delayed_on}
      - delayed_off: ${slow_delayed_off}
    lambda: return id(bed_sensor_${sensor_id}).state > id(val_trigger_${sensor_id}).state;

  - platform: template
    name: Bed Occupied ${sensor_name}
    id: bed_occupied_${sensor_id}
    device_class: occupancy
    icon: mdi:bed
    lambda: |-  # Sensor response is user tunable via "Response Speed"
      if (id(response_speed).state == "Fast") {
        return id(bed_occupied_${sensor_id}_fast).state;
      } else if (id(response_speed).state == "Slow") {
        return id(bed_occupied_${sensor_id}_slow).state;
      } else {
        return id(bed_occupied_${sensor_id}_normal).state;
      }

sensor:
  - platform: pulse_counter
    pin: ${sensor_gpio}
    name: ${sensor_name} Pressure
    id: bed_sensor_${sensor_id}
    update_interval: 0.5s
    unit_of_measurement: '%'
    icon: mdi:gauge
    filters:
      - lambda: |-                                # scale pulses/minute to 0%->100%
          float cal_0 = id(full_range).state ? 0 : ${calibrate_0};

          float val = (x - cal_0) * 100;
          float range = ${calibrate_100} - cal_0;

          return val/range;
      - clamp:
          min_value: 0
      - sliding_window_moving_average:
          window_size: ${averaging_window_samples}
          send_every: 1
      - or:
          - delta: ${reporting_delta}             # only send if sensor changes by `reporting_delta` (eliminate sensor noise)
          - throttle: ${reporting_interval_max}   # but still update every `reporting_interval_max`
  - platform: copy
    source_id: bed_sensor_${sensor_id}
    name: Calibrated ${sensor_name} Pressure
    id: bed_sensor_${sensor_id}_calibrated
    icon: mdi:scale-balance
    disabled_by_default: true
    filters:
      - lambda: |-                                # scale between val_unoccupied and val_occupied
          float cal_0 = id(val_unoccupied_${sensor_id}).state;
          float cal_100 = id(val_occupied_${sensor_id}).state;

          float val = (x - cal_0) * 100;
          float range = cal_100 - cal_0;

          return val/range;
      - clamp:
          max_value: 100
          min_value: 0

number:
  - platform: template
    name: ${sensor_name} Unoccupied Pressure
    id: val_unoccupied_${sensor_id}
    icon: mdi:gauge-empty
    unit_of_measurement: '%'
    entity_category: diagnostic
    optimistic: true
    restore_value: true
    initial_value: 0
    min_value: 0
    max_value: 120
    step: 1.0
    mode: box
    on_value:
      then:
        - lambda: |-  # Update trigger
            id(update_trigger_${sensor_id})->execute();
  - platform: template
    name: ${sensor_name} Occupied Pressure
    id: val_occupied_${sensor_id}
    icon: mdi:gauge-full
    unit_of_measurement: '%'
    entity_category: diagnostic
    optimistic: true
    restore_value: true
    initial_value: 100
    min_value: 0
    max_value: 120
    step: 1.0
    mode: box
    on_value:
      then:
        - lambda: |-  # Update trigger
            id(update_trigger_${sensor_id})->execute();
  - platform: template
    name: ${sensor_name} Trigger Pressure
    id: val_trigger_${sensor_id}
    optimistic: true
    restore_value: true
    initial_value: 50
    min_value: 0
    max_value: 120
    step: 1.0
    mode: box
    icon: mdi:gauge
    unit_of_measurement: '%'
    entity_category: config

button:
  - platform: template
    name: Calibrate ${sensor_name} Unoccupied
    id: calibration_${sensor_id}_set_unoccupied
    icon: mdi:bed-empty
    entity_category: config
    on_press:
      then:
        - number.set:
            id: val_unoccupied_${sensor_id}
            # round to 2 decimal places
            value: !lambda return round(id(bed_sensor_${sensor_id}).state * 100)/100.0;
  - platform: template
    name: Calibrate ${sensor_name} Occupied
    id: calibration_${sensor_id}_set_occupied
    icon: mdi:bed
    entity_category: config
    on_press:
      then:
        - number.set:
            id: val_occupied_${sensor_id}
            # round to 2 decimal places
            value: !lambda return round(id(bed_sensor_${sensor_id}).state * 100)/100.0;

script:
  - id: update_trigger_${sensor_id}
    mode: queued
    then:
      - lambda: |-  # Set trigger to x% of difference between min/max
          float unoccupied_pressure = id(val_unoccupied_${sensor_id}).state;
          float occupied_pressure = id(val_occupied_${sensor_id}).state;

          // calculate new trigger value
          float trigger_pressure = unoccupied_pressure + ((occupied_pressure - unoccupied_pressure) * float(${trigger_percentile}));

          // round to 2 decimal places
          trigger_pressure = round(trigger_pressure * 100)/100.0;

          // set value
          auto call = id(val_trigger_${sensor_id}).make_call();
          call.set_value(trigger_pressure);
          call.perform();