def print_to_LCDScreen (message):
try:
lcd = Adafruit_CharLCD()
lcd.begin(16,2)
for x in range(0, 16):
for y in range(0, 2):
lcd.setCursor(x, y)
lcd.message('>')
time.sleep(.025)
lcd.noDisplay()
lcd.clear()
lcd.message(str(message))
for x in range(0, 16):
lcd.DisplayLeft()
lcd.display()
for x in range(0, 16):
lcd.scrollDisplayRight()
time.sleep(.05)
# lcd.noDisplay()
# lcd.display()
# lcd.blink()
# lcd.noCursor()
# lcd.clear()
# lcd.noBlink()
# lcd.begin(16, 2)
# lcd.setCursor(7, 0)
# lcd.message('123')
# lcd.message('x')
# lcd.clear()
return 'ok'
except Exception,e:
return e
class Display(Thread):
# TODO: move this to a config file
COLS = 16
ROWS = 2
COL_OFFSET = 2 # You may choose to add an offset to the original position
DURATION = 15
PREFIX = "WARNING: "
def __init__(self, msg):
Thread.__init__(self)
LCDReactor.Display.START_POSITION = LCDReactor.Display.COLS - LCDReactor.Display.COL_OFFSET
self.msgs = [LCDReactor.Display.PREFIX, msg]
self.lcd = CharLCD(pin_rs=2, pin_e=4, pins_db=[3, 14, 25, 24])
def init_display(self):
self.lcd.clear()
self.lcd.begin(LCDReactor.Display.COLS, LCDReactor.Display.ROWS)
def display_message(self):
self.lcd.setCursor(LCDReactor.Display.START_POSITION, 0)
self.lcd.message(self.msgs[0])
self.lcd.setCursor(LCDReactor.Display.START_POSITION, 1)
self.lcd.message(self.msgs[1])
def shift_text(self):
self.lcd.DisplayLeft()
time.sleep(0.3)
def loop_message(self):
# Calculate the maximum length and the start position
# Needed for when the time runs out and the message is in the
# middle of the LCD
position = LCDReactor.Display.START_POSITION
max_len = max(len(self.msgs[0]), len(self.msgs[1]))
start_time = time.time()
# Display for n seconds
while time.time() < start_time + LCDReactor.Display.DURATION:
self.shift_text()
position = (position + 1) % max_len
# If the text is in the middle of the screen, we want to shift it
# off. The best way is to take the current position and move it
# until the the position is out of the display.
# "Out of display" is given by max_len (maximum image size) +
# START_POSITION, since it starts in the right side of the LCD
for x in range(position, LCDReactor.Display.START_POSITION + max_len):
self.shift_text()
self.lcd.clear()
def display(self):
self.init_display()
self.display_message()
self.loop_message()
def run(self):
self.display()
class GpioDisplay:
def __init__(self, *_args):
if GPIO.RPI_REVISION == 2:
self.lcd = Adafruit_CharLCD(pins_db=[23, 17, 27, 22])
else:
self.lcd = Adafruit_CharLCD()
self.lcd.begin(16,2)
def clear(self):
self.lcd.clear()
def move_to(self, row, col):
self.lcd.setCursor(row, col)
def write(self, string):
self.lcd.message(string)
def backlight(self, r, g, b):
# not implemented
pass
POWER_DOWN = 0x00 # No active state
POWER_ON = 0x01 # Power on
RESET = 0x07 # Reset data register value
# Start measurement at 1lx resolution. Time typically 120ms
# Device is automatically set to Power Down after measurement.
ONE_TIME_HIGH_RES_MODE_1 = 0x20
bus = smbus.SMBus(1) # Rev 2 Pi uses 1
def convertToNumber(data):
# Simple function to convert 2 bytes of data
# into a decimal number
return ((data[1] + (256 * data[0])) / 1.2)
def readLight(addr=DEVICE):
data = bus.read_i2c_block_data(addr,ONE_TIME_HIGH_RES_MODE_1)
return convertToNumber(data)
lcd.clear()
while True:
lux = readLight()
lux=round(lux,2)
print lux
print "light Level is " + str(lux) + " lx"
lcd.setCursor(3,1)
lux=round(lux,1)
lcd.message("L:" +str(lux))
time.sleep(1)
import time
from Adafruit_CharLCD import Adafruit_CharLCD
from time import sleep, strftime
from datetime import datetime
import RPi.GPIO as GPIO, time, os
GPIO.setmode(GPIO.BCM)
lcd = Adafruit_CharLCD()
lcd.begin(16, 2)
lcd.clear()
while True:
lcd.setCursor(0, 0)
lcd.message("Hello World")
time.sleep(2)
lcd.clear()
lcd.setCursor(0, 1)
lcd.message("Hello World !!!!!")
time.sleep(2)
lcd.clear()
from Adafruit_CharLCD import Adafruit_CharLCD
import RPi.GPIO as GPIO
from time import sleep
gas = 8
relay2 = 6
GPIO.setmode(GPIO.BCM)
GPIO.setup(6, GPIO.OUT)
GPIO.setup(gas, GPIO.IN)
lcd = Adafruit_CharLCD()
lcd.begin(16, 2)
lcd.clear()
while True:
if (GPIO.input(gas) == 0):
lcd.setCursor(13, 0)
lcd.message("GP")
print "GP"
GPIO.output(relay2, True)
sleep(1)
else:
lcd.setCursor(13, 0)
lcd.message("NG")
print "NG"
GPIO.output(relay2, False)
sleep(1)
relay1 = 5
relay2 = 6
gas = 8
GPIO.setmode(GPIO.BCM)
GPIO.setup(5, GPIO.OUT)
GPIO.setup(6, GPIO.OUT)
GPIO.setup(pir, GPIO.IN)
GPIO.setup(gas, GPIO.IN)
############################################################################################
while True:
degC, degf = read_temp()
degC = round(degC, 1)
print degC
lcd.setCursor(10, 1)
lcd.message("T:" + str(degC))
lux = readLight()
lux = round(lux, 2)
print "light Level is " + str(lux) + " lx"
lcd.setCursor(0, 1)
lux = round(lux, 1)
lcd.message("L:" + str(lux))
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
if humidity is not None and temperature is not None:
humidity = round(humidity, 2)
print "humidity is " + str(humidity)
lcd.setCursor(0, 0)
lcd.message("H:" + str(humidity))
else:
print 'Failed to get reading. Try again!'
class Scroller:
def __init__(self):
random.seed()
self.width = 40
self.height = 2
self.timeoutmin = 20
self.timeoutmax = 100
self.wait_time = 40
self.separator = ' +++ '
self.paused = False
self.paused_loop = 0
self.busy = False
self.busy_loop = 0
self.elapsed = ''
self.lines = []
self.offset = []
self.tag = []
for i in range(self.height):
self.lines.append('')
self.offset.append(0)
self.tag.append('')
self.ascii_art = {}
self.load_ascii_art()
# 0 - animation running
# > 0 - animation countdown
# -1 - animation and countdown disabled
self.easter_egg_countdown = -1
self.animation_index = self.ascii_art.keys()[random.randrange(0, len(self.ascii_art))]
self.animation_phase = 0
self.lcd = Adafruit_CharLCD()
self.lcd.begin(40, 2)
self.lcd.define_char(1, [0, 0x10, 0x08, 0x04, 0x02, 0x01, 0, 0])
self.lcd.define_char(2, [0, 31, 14, 4, 21, 10, 0, 0])
self.current_lines = ["", ""]
def tr(self, s):
result = ''.encode('latin-1')
for c in unicode(s, 'UTF-8'):
#print(c, ord(c))
if ord(c) == 92:
result += u'\x01'.encode('latin-1')
elif ord(c) < 128:
result += c.encode('latin-1')
elif ord(c) == 246:
result += u'\xef'.encode('latin-1')
elif ord(c) == 252:
result += u'\xf5'.encode('latin-1')
elif ord(c) == 228:
result += u'\xe1'.encode('latin-1')
elif ord(c) == 223:
result += u'\xe2'.encode('latin-1')
elif ord(c) == 169:
result += '(c)'.encode('latin-1')
else:
pass
#print(c)
#print(ord(c))
return result
def load_ascii_art(self):
with open('ascii-art.txt') as f:
while True:
tag = f.readline().strip()
if len(tag) == 0:
break
self.ascii_art[tag] = []
while True:
line1 = f.readline().rstrip()
if len(line1) == 0:
break
line2 = f.readline().rstrip()
line1 = self.tr(line1)
line2 = self.tr(line2)
if len(line1) > len(line2):
line2 += ' ' * (len(line1) - len(line2))
if len(line2) > len(line1):
line1 += ' ' * (len(line2) - len(line1))
self.ascii_art[tag].append(line1)
self.ascii_art[tag].append(line2)
def set_line(self, i, s = '', tag = ''):
if s == None:
s = ''
if tag == self.tag[i]:
if self.offset[i] > 0:
return
s = self.tr(s)
if s != self.lines[i]:
self.lines[i] = s
self.offset[i] = -self.wait_time
self.tag[i] = tag
if self.lines[0] == '' and self.lines[1] == '':
if self.easter_egg_countdown < 0:
self.easter_egg_countdown = random.randrange(self.timeoutmin, self.timeoutmax)
self.animation_index = self.ascii_art.keys()[random.randrange(0, len(self.ascii_art))]
self.animation_phase = 0
else:
self.easter_egg_countdown = -1
def set_paused(self, paused):
self.paused = paused
def set_busy(self, busy):
self.busy = busy
def set_elapsed(self, elapsed):
self.elapsed = elapsed
def render(self):
result_lines = []
if self.easter_egg_countdown > 0:
self.easter_egg_countdown -= 1
if self.easter_egg_countdown == 0:
# animation
for i in range(2):
offset = -len(self.ascii_art[self.animation_index][i]) + self.animation_phase
frames = len(self.ascii_art[self.animation_index]) / 2
part = self.ascii_art[self.animation_index][i + (2 * (self.animation_phase % frames))]
if offset < 0:
part = part[-offset:]
else:
part = (' ' * offset) + part
part += ' ' * self.width
part = part[:self.width]
result_lines.append(part)
if (offset > self.width):
self.easter_egg_countdown = random.randrange(self.timeoutmin, self.timeoutmax)
self.animation_index = self.ascii_art.keys()[random.randrange(0, len(self.ascii_art))]
self.animation_phase = 0
self.animation_phase = self.animation_phase + 1
else:
# print lines
for i in range(self.height):
line = self.lines[i]
cropped = line
if len(line) > self.width:
cropped += self.separator
cropped += line
offset = self.offset[i]
if offset < 0:
offset = 0
cropped += ' ' * self.width
cropped = cropped[offset:(offset + self.width)]
if i == 0:
if self.busy:
cropped = cropped[:-2]
self.busy_loop = (self.busy_loop + 1) % 4
cropped += ' '
cropped += ('/-' + u'\x01'.encode('latin-1') + '|')[self.busy_loop]
if i == 1:
if self.paused:
cropped = cropped[:-2]
self.paused_loop = (self.paused_loop + 1) % 4
cropped += ' '
cropped += '.oOo'[self.paused_loop]
#else:
#if self.elapsed != '':
#cropped = cropped[:-(len(self.elapsed) + 2)]
#cropped += "|%s" % self.elapsed
if i == 0:
cropped = cropped[:-2]
cropped += ' '
cropped += '"'
if i == 1:
cropped = cropped[:-2]
cropped += ' '
cropped += u'\x02'.encode('latin-1')
result_lines.append(cropped)
#os.system("clear")
#self.lcd.clear()
self.lcd.setCursor(0, 0)
for index, cropped in enumerate(result_lines):
#if cropped != self.current_lines[index]:
self.current_lines[index] = cropped
self.lcd.message(cropped)
#print(cropped)
#print(cropped)
#print()
def animate(self):
for i in range(self.height):
line = self.lines[i]
if len(line) <= self.width:
self.offset[i] = 0
else:
self.offset[i] += 1
if self.offset[i] == len(line) + len(self.separator):
self.offset[i] = -self.wait_time
def clear(self):
for i in range(self.height):
self.set_line(i, '')
from Adafruit_CharLCD import Adafruit_CharLCD
import RPi.GPIO as GPIO
from time import sleep
pir = 27
relay1 = 5
GPIO.setmode(GPIO.BCM)
GPIO.setup(5,GPIO.OUT)
GPIO.setup(pir,GPIO.IN)
lcd = Adafruit_CharLCD()
lcd.begin(16, 2)
lcd.clear()
while True:
if(GPIO.input(pir) == 1):
lcd.setCursor(10,0)
lcd.message("TD")
print "TD"
GPIO.output(relay1,True)
sleep(1)
else:
lcd.setCursor(10,0)
lcd.message("NT")
print "NT"
GPIO.output(relay1,False)
sleep(1)
pingmax = pingnum
if pingnum < pingmin:
pingmin = pingnum
#send the ping value to the highping function
if pingnum > 100:
highping.main(pingnum)
#find the local temp, using the openweathermap city ID
localtemp = temperature.local(6174041)
roomtemp = temperature.room(apikey, 'temperature')
lcd.clear()
lcd.setCursor(0, 0)
lcd.message('WANIP %s' % (wanipaddr))
lcd.setCursor(0, 1)
lcd.message('Ping %0.2f' % (pingnum))
lcd.setCursor(0, 2)
lcd.message('%0.2f %0.2f %0.2f' % (pingavg, pingmin, pingmax))
lcd.setCursor(0, 3)
lcd.message('temp:%0.1f room:%0.1f' % (localtemp, roomtemp))
aio.send('wan-ip', wanipaddr)
aio.send('ping', pingnum)
data0 = aio.receive('wan-ip')
print('Received value: {0}'.format(data0.value))
data1 = aio.receive('ping')
print('Received value: {0}'.format(data1.value))
class SkyPi:
def __init__(self):
self.FSM = SkyPi_FSM()
# flags
self.redraw_flag = True
self.wifi_mode_adhoc_flag = False
# setup LCD screen
self.lcd = Adafruit_CharLCD()
self.lcd.begin(16, 2)
self.lcd.clear()
self.lcd.message("Start SkyPi_LCDd\n")
# setup datetime
self.time_state = True
self.time_str_fmt = ' %m/%d %H:%M'
self.datetime_str=datetime.now().strftime(self.time_str_fmt)
# gps
self.gps = SkyPi_GPS(SP_CFG.DT_GPS_CHECK)
# net
self.net = SkyPi_NET()
# setup GPIOs
GPIO.setmode(GPIO.BCM)
GPIO.setup(SP_CFG.PIN_BUTTON_HC_SETUP, GPIO.IN, pull_up_down=GPIO.PUD_UP)
GPIO.setup(SP_CFG.PIN_SWITCH_ADHOC_MODE, GPIO.IN, pull_up_down=GPIO.PUD_UP)
def Show_GPS_IP(self):
# gps status
self._show_gps_status()
# time
self._show_time()
# ip
self._show_ip()
# reset redraw_flag
self.redraw_flag = False
# monitor button
self.check_buttons()
def Change_WiFi_Mode(self,mode):
if mode == 'A':
self.net.switch_to_AdHoc()
elif mode == 'M':
self.net.switch_to_Managed()
def Setup_HC(self):
self.lcd.clear()
self.lcd.setCursor(0,0)
self.lcd.message('Button pressed\n')
sleep(1)
self.lcd.clear()
self.lcd.setCursor(0,0)
lat,lon,status = self.gps.get_location()
self.lcd.message('S:%2d lat:%g' % (status,lat))
self.lcd.setCursor(0,1)
self.lcd.message(' lon:%g' % lon)
self.redraw_flag = True
sleep(2)
self.lcd.clear()
def check_buttons(self):
if GPIO.input(SP_CFG.PIN_BUTTON_HC_SETUP) == False:
self.Setup_HC()
if GPIO.input(SP_CFG.PIN_SWITCH_ADHOC_MODE) == False:
if not self.wifi_mode_adhoc_flag:
self.Change_WiFi_Mode('A')
self.wifi_mode_adhoc_flag = True
else:
if self.wifi_mode_adhoc_flag:
self.Change_WiFi_Mode('M')
self.wifi_mode_adhoc_flag = False
def _show_gps_status(self):
"""
show GPS status
"""
if ( self.gps.check_gps() or self.redraw_flag ):
# show GPS info on LCD
self.lcd.setCursor(0,0)
self.lcd.message(self.gps.gps_status_str())
def _show_ip(self):
local_redraw_flag = False
# if address has changed
if ( self.net.check_net() or self.redraw_flag ):
# clear previous IP
self.lcd.setCursor(0,1)
self.lcd.message(16*' ')
# new IP
self.lcd.setCursor(0,1)
self.lcd.message(self.net.net_status_str())
def _show_time(self):
current_datetime_str=datetime.now().strftime(self.time_str_fmt)
if ( current_datetime_str != self.datetime_str or
self.redraw_flag ):
self.datetime_str = current_datetime_str
self.lcd.setCursor(3,0)
self.lcd.message(self.datetime_str)
# blinking ":"
self.time_state = not self.time_state
self.lcd.setCursor(15,0)
if self.time_state:
self.lcd.message(':')
else:
self.lcd.message(' ')
from Adafruit_CharLCD import Adafruit_CharLCD
import RPi.GPIO as GPIO
from time import sleep
gas = 8
relay2=6
GPIO.setmode(GPIO.BCM)
GPIO.setup(6,GPIO.OUT)
GPIO.setup(gas,GPIO.IN)
lcd = Adafruit_CharLCD()
lcd.begin(16, 2)
lcd.clear()
while True:
if(GPIO.input(gas) == 0):
lcd.setCursor(13,0)
lcd.message("GP")
print "GP"
GPIO.output(relay2,True)
sleep(1)
else:
lcd.setCursor(13,0)
lcd.message("NG")
print "NG"
GPIO.output(relay2,False)
sleep(1)
class HashTagDisplay():
def __init__(self, cols, rows, delay, debug=False):
# number of columns on the character LCD (min: 16, max: 20)
self.cols = cols
# number of rows on the character LCD (min: 1, max: 4)
self.rows = rows
# duration in seconds to allow human to read LCD lines
self.delay = delay
# print messages to shell for debugging
self.debug = debug
if debug == True:
print " cols = {0}".format(cols)
print " rows = {0}".format(rows)
print "delay = {0}".format(delay)
self.lcd = Adafruit_CharLCD()
self.lcd.begin(cols, rows)
def search(self, hashtag):
""" search for tweets with specified hashtag """
twitter_search = Twitter(domain="search.twitter.com")
return twitter_search.search(q=hashtag)
def display(self, results):
""" Display each tweet in the twitter search results """
for tweet in results.get('results'):
msg = "@" + tweet.get('from_user') + ": " + tweet.get('text')
if self.debug == True:
print "msg: " + msg
# break tweet into lines the width of LCD
lines = textwrap.wrap(msg, self.cols)
self.printLines(lines)
def printLines(self, lines):
""" display each line of the tweet """
i = 0
while i < lines.__len__():
self.lcd.clear()
# print line to each LCD row
for row in range(self.rows):
# display line on current LCD row
self.lcd.setCursor(0,row)
self.lcd.message(lines[i])
i=i+1
# 200ms delay is now only for visual effect
# initially added the delay to avoid issue
# where garbage characters were displayed:
# https://github.com/adafruit/Adafruit-Raspberry-Pi-Python-Code/pull/13
sleep(0.2)
# no more lines remaining for this tweet
if i >= lines.__len__():
# sleep according to the number of rows displayed
row_delay = self.delay / float(self.rows)
delay = row_delay * (row+1)
if(delay < 1):
delay = 1
sleep(delay)
break
# pause to allow human to read displayed rows
if(row+1 >= self.rows):
sleep(self.delay)
# Main *****************************************************************
#***********************************************************************
f=open(log_datei,'a' if os.path.exists(log_datei) else 'w')
f.write("DATALOG\n")
f.close()
# Endlosschlaufe
while 1:
#***********************************************************************
# "Switch case" ********************************************************
# Menüauswahl
if n == 0:
lcd.setCursor(0, 0)
lcd.message(" Auswahl: ")
# Nach links oder rechts?
if GPIO.input(left) == GPIO.LOW:
# Vom aktuellen Punkt eins links
if save < 4:
save = save + 1
else:
save = 1
if GPIO.input(right) == GPIO.LOW:
# Vom aktuellen Punkt eins rechts
if save > 1:
save = save - 1
else:
save = 4
class LCD_display(object):
bus = 1 # Note you need to change the bus number to 0 if running on a revision 1 Raspberry Pi.
address = 0x20 # I2C address of the MCP230xx chip.
gpio_count = 8 # Number of GPIOs exposed by the MCP230xx chip, should be 8 or 16 depending on chip.
# LCD 20x4
num_columns = 20
num_lines = 4
def __init__(self, init=True):
# Create MCP230xx GPIO adapter.
mcp = MCP230XX_GPIO(self.bus, self.address, self.gpio_count)
# Create LCD, passing in MCP GPIO adapter.
self.lcd = Adafruit_CharLCD(pin_rs=1, pin_e=2, pin_bl=7, pins_db=[3,4,5,6], GPIO=mcp)
if init:
self.initialisation()
def initialisation(self):
self.lcd.clear()
self.lcd.begin(self.num_columns, self.num_lines)
self.lcd.backlightOn()
self.lcd.setCursor(0, 0)
#self.lcd.message(datetime.datetime.now().strftime(' %a %d %b - %H:%M'))
def line_message(self, row, text):
# set the position (row from 0 to 3)
self.lcd.setCursor(0, row)
# display the message
self.lcd.message(text)
def temperature(self, text):
#set the position
self.lcd.setCursor(0, 1)
#display the message and value
self.lcd.message("Temperature: %.2f" % text)
self.lcd.write4bits( 0xDF, True) #display the degree symbol "°"
self.lcd.message("C")
def humidity(self, text):
#set the position
self.lcd.setCursor(0, 2)
#display the message and value
self.lcd.message("Humidity: %.2f%%RH" % text)
def pressure(self, text):
#set the position
self.lcd.setCursor(0, 3)
#display the message and value
self.lcd.message("Pressure: %.2fhPa" % text)
def date(self):
#set the position
self.lcd.setCursor(0, 0)
#display the message and value
self.lcd.message(datetime.datetime.now().strftime(' %a %d %b %H:%M'))
cmd = "ip addr show wlan0 | grep inet | awk '{print $2}' | cut -d/ -f1"
lcd.begin(16, 2)
def run_cmd(cmd):
p = Popen(cmd, shell=True, stdout=PIPE)
output = p.communicate()[0]
return output
tiempo = datetime.now()
fecha = tiempo.strftime('%A %d de %B del %Y')
fecha_mostrar = fecha
i = 0
while 1:
tiempo = datetime.now()
lcd.setCursor(0,1)
lcd.message(tiempo.strftime('%H:%M:%S %p'))
k = 0
while (k < 4):
if len(fecha_mostrar) < 16:
fecha_mostrar = fecha_mostrar + '...' + fecha
fecha_mostrar = fecha_mostrar[1:]
#print(i, fecha_mostrar, len(fecha_mostrar))
lcd.setCursor(0,0)
lcd.message(fecha_mostrar)
sleep(0.25)
i = i + 1
k = k + 1
class LCD_display(object):
bus = 1 # Note you need to change the bus number to 0 if running on a revision 1 Raspberry Pi.
address = 0x20 # I2C address of the MCP230xx chip.
gpio_count = 8 # Number of GPIOs exposed by the MCP230xx chip, should be 8 or 16 depending on chip.
# LCD 20x4
num_columns = 20
num_lines = 4
def __init__(self, init=True):
# Create MCP230xx GPIO adapter.
mcp = MCP230XX_GPIO(self.bus, self.address, self.gpio_count)
# Create LCD, passing in MCP GPIO adapter.
self.lcd = Adafruit_CharLCD(pin_rs=1,
pin_e=2,
pin_bl=7,
pins_db=[3, 4, 5, 6],
GPIO=mcp)
if init:
self.initialisation()
def initialisation(self):
self.lcd.clear()
self.lcd.begin(self.num_columns, self.num_lines)
self.lcd.backlightOn()
self.lcd.setCursor(0, 0)
#self.lcd.message(datetime.datetime.now().strftime(' %a %d %b - %H:%M'))
def line_message(self, row, text):
# set the position (row from 0 to 3)
self.lcd.setCursor(0, row)
# display the message
self.lcd.message(text)
def temperature(self, text):
#set the position
self.lcd.setCursor(0, 1)
#display the message and value
self.lcd.message("Temperature: %.2f" % text)
self.lcd.write4bits(0xDF, True) #display the degree symbol "°"
self.lcd.message("C")
def humidity(self, text):
#set the position
self.lcd.setCursor(0, 2)
#display the message and value
self.lcd.message("Humidity: %.2f%%RH" % text)
def pressure(self, text):
#set the position
self.lcd.setCursor(0, 3)
#display the message and value
self.lcd.message("Pressure: %.2fhPa" % text)
def date(self):
#set the position
self.lcd.setCursor(0, 0)
#display the message and value
self.lcd.message(datetime.datetime.now().strftime(' %a %d %b %H:%M'))
device_folder = glob.glob(base_dir + '28*')[0] # to the base address, 28 and * means wild card is attached
# because actual sensor address starts from 28
device_file = device_folder + '/w1_slave'
def read_temp_raw():
f = open(device_file, 'r') # read the device file with an attribute of 'r' means Read ONLY
lines = f.readlines()#lines read the status
f.close() # close the file
return lines
def read_temp():
lines = read_temp_raw() # this is actual process of reading temperature from sensor, and processing it,
while lines[0].strip()[-3:] != 'YES':
time.sleep(0.2)
lines = read_temp_raw()
equals_pos = lines[1].find('t=')
if equals_pos != -1:
temp_string = lines[1][equals_pos+2:]
temp_c = float(temp_string) / 1000.0
temp_f = temp_c * 9.0 / 5.0 + 32.0
return temp_c, temp_f
lcd.clear()
while True:
degC,degf=read_temp()
print degC
lcd.setCursor(5,1)
lcd.message("T:"+str(degC))
time.sleep(1)
relay1 = 5
relay2=6
gas = 8
GPIO.setmode(GPIO.BCM)
GPIO.setup(5,GPIO.OUT)
GPIO.setup(6,GPIO.OUT)
GPIO.setup(pir,GPIO.IN)
GPIO.setup(gas,GPIO.IN)
############################################################################################
while True:
degC,degf=read_temp()
degC = round(degC,1)
print degC
lcd.setCursor(10,1)
lcd.message("T:"+str(degC))
lux = readLight()
lux = round(lux,2)
print "light Level is " + str(lux) + " lx"
lcd.setCursor(0,1)
lux = round(lux,1)
lcd.message("L:"+str(lux))
humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
if humidity is not None and temperature is not None:
humidity = round(humidity,2)
print "humidity is " + str(humidity)
lcd.setCursor(0,0)
lcd.message("H:" + str(humidity))
else:
print 'Failed to get reading. Try again!'
DURATION = 30
START_POSITION = 14 # Have the text scroll left. Adjust for LCD size
current_time = lambda: int(round(time.time()))
start_time = current_time()
msg = 'CODERDOJO\nMINHO'
split = msg.split('\n')
position = START_POSITION
max_len = max(len(split[0]), len(split[1]))
lcd = CharLCD(pin_rs=2, pin_e=4, pins_db=[3, 14, 25, 24])
lcd.clear()
lcd.begin(16,2)
lcd.setCursor(14,0)
lcd.message(split[0])
lcd.setCursor(14,1)
lcd.message(split[1])
while current_time() < start_time + DURATION:
lcd.DisplayLeft()
position = (position + 1) % max_len
time.sleep(.3)
for x in range(position, START_POSITION + max_len):
lcd.DisplayLeft()
time.sleep(.3)
lcd.clear()
