class GroveMoistureSensor:
'''
Grove Moisture Sensor class\
Args:
pin(int): number of analog pin/channel the sensor connected.
'''
def __init__(self, channel):
self.channel = channel
self.adc = ADC()
@property
def moisture(self):
'''
Get the moisture strength value/voltage
Returns:
(int): voltage, in mV
'''
value = self.adc.read_voltage(self.channel)
return value
class GroveCapMoistureSensor:
def __init__(self, channel, dry_voltage, wet_voltage):
self.channel = channel
self.adc = ADC()
self.dry_voltage = dry_voltage
self.wet_voltage = wet_voltage
@property
def moisture_percent(self):
v = self.voltage
normalised_value = abs(self.dry_voltage-v)
dif = float(abs(self.dry_voltage - self.wet_voltage))
percent = (normalised_value/dif)*100
return percent
@property
def voltage(self):
value = self.adc.read_voltage(self.channel)
return value
adc = ADC()
Offset = -2.2
print("name: {0:20}, version: {1:4}".format(adc.name, adc.version))
try:
print('按下 Ctrl-C 可停止程式')
lcd.clear()
while True:
lcd.cursor_pos = (0, 0)
lcd.write_string("Date: {}".format(time.strftime("%Y/%m/%d")))
lcd.cursor_pos = (1, 0)
lcd.write_string("Time: {}".format(time.strftime("%H:%M:%S")))
#voltage = adc.read_voltage(0)/1000
raw = adc.read_raw(0)
voltage = adc.read_voltage(0)
percent = adc.read(0)
print("raw:{0:>6}, voltage:{1:>6}, percent(%):{2:>6} ".format(
raw, voltage, percent))
# phValue = 7.0 + (voltage - 3.2) * (-5.5)
# phValue= voltage*5.0/1024/6
# phValue=3.5*phValue+Offset
# print(voltage, phValue)
time.sleep(1)
except KeyboardInterrupt:
lcd.backlight_enabled = False
print('關閉程式')
finally:
lcd.clear()
_serialnum = "28-00000b702a1d"
try:
print('按下 Ctrl-C 可停止程式')
lcd.clear()
while True:
lcd.setCursor(0, 0)
lcd.write("Date: {}".format(time.strftime("%Y/%m/%d")))
lcd.setCursor(1, 0)
lcd.write("Time: {}".format(time.strftime("%H:%M:%S")))
# read sensor data
voltage = []
temp_list = []
for i in range(1000):
# get voltage from PH sensor
voltage.append(adc.read_voltage(0) / 1000)
for i in range(5):
# get temperature
filename = "/sys/bus/w1/devices/" + _serialnum + "/w1_slave"
tfile = open(filename)
text = tfile.read()
tfile.close()
secondline = text.split("\n")[1]
temperaturedata = secondline.split(" ")[9]
global temperature
temperature = float(temperaturedata[2:])
temperature = temperature / 1000
temp_list.append(temperature)
# print ('temperature:',temperature)
firstline = text
ccrrcc = firstline.split(" ")[11]
import time
from grove.adc import ADC
channel = 4 # pin A4
adc = ADC()
while True:
print(adc.read_voltage(channel))
time.sleep(0.5)
