def read_values():
""" Read the moisture level """
celsius = moisture_sensor.get_temperature()
fahrenheit = (celsius * 9.0 / 5.0) + 32.0
moisture_ohms = moisture_sensor.get_moisture()
moisture_kiloohms = moisture_ohms / 1000.0
kpa = get_kpa(moisture_kiloohms, celsius)
""" Field capacity is about -30 kPa, except
in the case of sandy soils, which is -10 kPa """
available_water = -30 - -1500
remaining_available = ((available_water - (kpa * -1)) / available_water) * 100
return {
'moistureLevel': remaining_available,
'moistureReading': 0,
'moistureVolts': 0,
'moistureOhms': moisture_ohms,
'moistureKOhms': moisture_kiloohms,
'temperature': fahrenheit,
'moistureKPa': kpa,
}
from lib.devices import MoistureSensor
from lib.utils import get_kpa
import time
sensor = MoistureSensor()
while True:
moisture_ohms = sensor.get_moisture()
moisture_kiloohms = moisture_ohms / 1000.0
celsius = sensor.get_temperature()
kpa = get_kpa(moisture_kiloohms, celsius)
fahrenheit = (celsius * 9.0 / 5.0) + 32.0
output = [
'Reading %s' % 0,
'Voltage %s' % 0,
'Ohms %s' % moisture_ohms,
'kOhms %s' % moisture_kiloohms,
'kPa %s' % kpa,
'Temp %s' % fahrenheit,
]
print ' | '.join(output)
time.sleep(1)
