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Import FutureBoard Library
Import the Library to make use of its functions.
02: Onboard Sensors
1. Buttons
Parameter btn represents A or B button, accepted values are a, b.
2. Light Sensor
Returns a value 0~4095.
3. Temperature Sensor
Returns a degree in Celsius, FutureBoard can measure temperatures from -40 to 80 degrees.
Sample Program for 1~3
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from future import *
from time import sleep
screen.fill((0, 0, 0))
while True:
if sensor.btnValue('a'):
screen.text(str("Light: ")+str(sensor.getLight()),5,10,1,(0, 119, 255))
sleep(0.5)
if sensor.btnValue('b'):
screen.text(str("Temp: ")+str(sensor.getTemp()),5,30,1,(0, 119, 255))
sleep(0.5)
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4. Accelerometer
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sensor.accX()
sensor.accY()
sensor.accZ()
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Returns the accelerometer value of the 3 axis with G as the unit.
5. Tilt Angles
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sensor.roll()
sensor.pitch()
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Returns the roll and pitch angle of the FutureBoard.
Sample Program for 4~5
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from future import *
from time import sleep
screen.sync = 0
while True:
screen.fill((0, 0, 0))
screen.text(str("X: ")+str(sensor.accX()),5,10,1,(0, 119, 255))
screen.text(str("Y: ")+str(sensor.accY()),5,25,1,(0, 119, 255))
screen.text(str("Z: ")+str(sensor.accZ()),5,40,1,(0, 119, 255))
screen.text(str("Roll: ")+str(sensor.roll()),5,55,1,(0, 119, 255))
screen.text(str("Pitch: ")+str(sensor.pitch()),5,70,1,(0, 119, 255))
screen.refresh()
sleep(0.2)
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6. Gesture Detection
8 kinds of gesture can be detected by the FutureBoard.
- ‘shake’
- ‘freefall’
- ‘tilt_up’
- ‘tilt_down’
- ‘tilt_left’
- ‘tilt_right’
- ‘face_up’
- ‘face_down’
7. Gesture Event Trigger
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sensor.gesTrig[ges] = fn
sensor.startSchedule()
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Sample Program for 6~7
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from future import *
from time import sleep
def onGesture_shake():
buzzer.melody(JUMP_UP)
sensor.gesTrig['shake']=onGesture_shake
sensor.startSchedule()
screen.sync = 0
while True:
screen.fill((0, 0, 0))
screen.text(str("Face Up: ")+str(sensor.gesture('face_up')),5,10,1,(0, 119, 255))
screen.text(str("Face Down: ")+str(sensor.gesture('face_down')),5,25,1,(0, 119, 255))
screen.refresh()
sleep(0.2)
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8. Compass Calibration
Magnetometer and compass requires calibration before using.
9. Magnetic Strength
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sensor.magX()
sensor.magY()
sensor.magZ()
sensor.magStrength()
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Returns the magnetic strength detected by the sensor with uT as the unit.
10. Compass Bearing
Returns the compass bearing.
Sample Program for 8~10
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from future import *
import math
calibrateCompass()
screen.sync = 0
ds = ''
while 1:
d = int(math.fabs(360-sensor.heading()))
screen.fill(44)
if (d<20) | (d>340):
ds = 'N'
elif (d<70):
ds = 'NE'
elif (d<110):
ds = 'E'
elif (d<160):
ds = 'SE'
elif (d<200):
ds = 'S'
elif (d<250):
ds = 'SW'
elif (d<290):
ds = 'W'
else:
ds = 'NW'
screen.text(d, 5,5)
screen.textCh(ds,5,30)
screen.text(str('Strength: ')+str(sensor.magStrength()),5,80)
screen.refresh()
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KittenBot Team
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