def show_text(string, font_name='courB24', font_width=15, font_height=24):
lcd = Display()
lcd.clear()
strings = wrap(string, width=int(180/font_width))
for i in range(len(strings)):
x_val = 89-font_width/2*len(strings[i])
y_val = 63-(font_height+1)*(len(strings)/2-i)
lcd.text_pixels(strings[i], False, x_val, y_val, font=font_name)
lcd.update()
def show_text(string,
font_name='courB24',
font_width=15,
font_height=24): # A function to show text on the robot's screen
'''Function to show a text on EV3 screen.
This code is copied from ev3python.com'''
lcd = Display() # Defining screen
lcd.clear() # Clearing the screen so there isnt already text
strings = wrap(string, width=int(180 / font_width)) #
for i in range(len(strings)):
x_val = 89 - font_width / 2 * len(strings[i])
y_val = 63 - (font_height + 1) * (len(strings) / 2 - i)
lcd.text_pixels(strings[i], False, x_val, y_val, font=font_name)
lcd.update()
def display_different_fonts():
lcd = Display()
sound = Sound()
def show_for(seconds):
lcd.update()
sound.beep()
sleep(seconds)
lcd.clear()
# Try each of these different sets:
style = 'helvB'
#style = 'courB'
#style = 'lutBS'
y_value = 0
str1 = ' The quick brown fox jumped'
str2 = '123456789012345678901234567890'
for height in [10, 14, 18, 24]:
text = style + str(height) + str1
lcd.text_pixels(text, False, 0, y_value, font=style + str(height))
y_value += height + 1 # short for y_value = y_value+height+1
lcd.text_pixels(str2, False, 0, y_value, font=style + str(height))
y_value += height + 1
show_for(6)
strings = [] # create an empty list
# Screen width can accommodate 12 fixed
# width characters with widths 14 or 15
# 123456789012
strings.append(style + '24 The')
strings.append('quick brown ')
strings.append('fox jumps ')
strings.append('over the dog')
strings.append('123456789012')
for i in range(len(strings)):
lcd.text_pixels(strings[i], False, 0, 25 * i, font=style + '24')
show_for(6)
ts = TouchSensor()
lcd = Display()
sound = Sound()
def play_welcome():
global Distance
while loop == True: # repeat until 'loop' is set to False in the main thread.
Distance = us.value()
if Distance < 400:
lcd.text_pixels('Welcome', x=40, y=50, font='courB24')
lcd.update()
sleep(0.2)
else:
sleep(0.1)
loop = True
t = Thread(target=play_welcome)
t.start()
sound.beep()
while True:
if ts.is_pressed == True:
lcd.text_pixels('Ignition', x=40, y=70, font='courB24')
lcd.update()
sleep(0.2)
sleep(1)
else:
sleep(0.01)
#!/usr/bin/env python3
from ev3dev2.display import Display
from textwrap import wrap
from time import sleep
lcd = Display()
lcd.clear()
style = 'lutBS24'
string = 'What a wonderful world! Is it good day? Cool Okey'
strings = wrap(string, width=12)
y_value = 0
for i in range(len(strings)):
lcd.text_pixels(strings[i], False, 0, y_value, font=style)
y_value += 24
lcd.update()
lcd.update()
sleep(20)
lcd.clear()
#!/usr/bin/env python3
from ev3dev2.motor import OUTPUT_B, OUTPUT_C, MoveSteering
from ev3dev2.sensor.lego import TouchSensor, UltrasonicSensor
from ev3dev2.button import Button
from time import sleep
from ev3dev2.sound import Sound
from threading import Thread
from ev3dev2.display import Display
us = UltrasonicSensor()
us.mode = 'US-DIST-CM'
ts = TouchSensor()
lcd = Display()
sound = Sound()
sound.beep()
btn = Button()
while True:
Distance = us.value()
if ts.is_pressed == True and Distance < 400 and btn.wait_for_pressed(
'left'):
lcd.text_pixels('Motor Start& Idle', x=0, y=60, font='courB14')
lcd.update()
sound.beep()
sleep(0.2)
sleep(1)
else:
sleep(0.01)
log.info('prepare for the initial position')
# prepare for the initial position
# detect the upper position of the lifter
lm_lifter.on( -100, brake=True)
while( not ts.is_pressed ):
sleep(0.05)
# approaching the initial position with high speed
lm_lifter.on_for_rotations(90, 7)
# nearly approached the initial position, approaching with lower speed
lm_lifter.on_for_degrees(20, 240)
# clear the lcd display
lcd.clear()
# show the steps
lcd.text_pixels( str(steps), True, 80, 50, font='courB18')
lcd.update()
log.info('wait user to supply the steps')
# wait user to supply the steps to go
while( True ):
if(not btn.buttons_pressed):
sleep(0.01)
continue
if btn.check_buttons(buttons=['up']):
steps += 1
elif(btn.check_buttons(buttons=['down']) ):
steps -= 1
if( steps < 0 ):
steps = 0
#!/usr/bin/env python3
from ev3dev2.sensor.lego import UltrasonicSensor
from ev3dev2.display import Display
from ev3dev2.sound import Sound
from time import sleep
lcd = Display()
us = UltrasonicSensor()
sound = Sound()
sound.beep()
while True:
distance = us.distance_centimeters
lcd.text_pixels(str(distance) + ' cm', x=40, y=50, font='courB24')
lcd.update()
sleep(0.1)
sound.beep()
sleep(seconds)
lcd.clear()
# Try each of these different sets:
style = 'helvB'
#style = 'courB'
#style = 'lutBS'
y_value = 0
str1 = ' The quick brown fox jumped'
str2 = '123456789012345678901234567890'
for height in [10, 14, 18, 24]:
text = style + str(height) + str1
lcd.text_pixels(text, False, 0, y_value, font=style + str(height))
y_value += height + 1 # short for y_value = y_value+height+1
lcd.text_pixels(str2, False, 0, y_value, font=style + str(height))
y_value += height + 1
show_for(6)
strings = [] # create an empty list
# Screen width can accommodate 12 fixed
# width characters with widths 14 or 15
# 123456789012
strings.append(style + '24 The')
strings.append('quick brown ')
strings.append('fox jumps ')
strings.append('over the dog')
strings.append('123456789012')
#!/usr/bin/env python3
from ev3dev2.button import Button
from ev3dev2.display import Display
from ev3dev2.sound import Sound
btn = Button()
sound = Sound()
lcd = Display()
sound.beep()
while True:
'''btn.wait_for_bump('left')
lcd.text_pixels('left', x=40, y=50, font='courB24')
lcd.update()
sleep(1)
sound.beep()'''
'''btn.wait_for_pressed(['up', 'down'])
lcd.text_pixels('up or down', x=40, y=50, font='courB24')
lcd.update()
sleep(1)
sound.beep()'''
btn.wait_for_bump('right')
lcd.text_pixels('right', x=40, y=50, font='courB24')
lcd.update()
sleep(1)
sound.beep()