cylinder_volume_metric.py

"""Calculate the liquid volume of a cylinder"""
from hcsr04sensor import sensor

trig_pin = "P9_23"
echo_pin = "P9_25"
# default values
# temperature = 20 celcius
# unit = "metric"
# gpio_mode = GPIO.BCM

# Get litres in a cylinder
cyl_depth_metric = 96  # centimeters
cyl_radius_metric = 15  # centimeters
value = sensor.Measurement(trig_pin, echo_pin)
distance = value.raw_distance()
water_depth_metric = value.depth(distance, cyl_depth_metric)
volume_litres = value.cylinder_volume_standing(water_depth_metric, cyl_radius_metric)
print("The liquid volume of the cylinder is {} litres".format(round(volume_litres, 1)))