IR Seeker Video Lesson #2

QikEasy IR Seeker Tutorials – Video #2

This video provides a basic tutorial on how to use QikEasy IR Seeker.

Here’s the Word Block program for the first part of the tutorial (for Spike App 3):

Here’s the Python code for part 1 of the tutorial (for Spike App 3):

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from hub import light_matrix, port
import runloop
import color_sensor

Direction = 0
SignalStrength = 0

# IR Seeker Combine IR Data Function into the two global variables
def Ir_Combine_360_Sensor_Data(FrontDirection, FrontStrength, BackDirection, BackStrength):
    global Direction, SignalStrength
    if ( FrontStrength == 0 and BackStrength == 0):
        Direction = 0
    else:
        if ( FrontStrength > BackStrength):
            Direction = round( FrontDirection )
            SignalStrength = round( FrontStrength )
        else:
            Direction = round( BackDirection ) + 9
            SignalStrength = round( BackStrength )

# IR Seeker Read 360 Function
def Ir_Read_360_Sensor_Data(Channel, ReductionFactor):
    rgb = color_sensor.rgbi(Channel)
    Ir_Combine_360_Sensor_Data( color_sensor.reflection(Channel)//4, rgb[0]//ReductionFactor, rgb[2]//ReductionFactor, rgb[1]//ReductionFactor)

# MAIN PROGRAM
async def main():
    while (1):
        Ir_Read_360_Sensor_Data(port.C, 4)
        print( [Direction, SignalStrength] )
        await runloop.sleep_ms(200)

runloop.run(main())

Here’s the Word Block program for the second part of the tutorial (for Spike App 3):

Here’s the Python code for part 2 of the tutorial (for Spike App 3):

Copy Code 


from hub import light_matrix, port
import runloop
import color_sensor

Direction = 0
SignalStrength = 0
DirectionToXYMap = "13,12,11,21,31,41,51,52,53,53,54,55,45,35,25,15,14,13"
x = 1
y = 1

# IR Seeker Combine IR Data Function into the two global variables
def Ir_Combine_360_Sensor_Data(FrontDirection, FrontStrength, BackDirection, BackStrength):
    global Direction, SignalStrength
    if ( FrontStrength == 0 and BackStrength == 0):
        Direction = 0
    else:
        if ( FrontStrength > BackStrength):
            Direction = round( FrontDirection )
            SignalStrength = round( FrontStrength )
        else:
            Direction = round( BackDirection ) + 9
            SignalStrength = round( BackStrength )

# IR Seeker Read 360 Function
def Ir_Read_360_Sensor_Data(Channel, ReductionFactor):
    rgb = color_sensor.rgbi(Channel)
    Ir_Combine_360_Sensor_Data( color_sensor.reflection(Channel)//4, rgb[0]//ReductionFactor, rgb[2]//ReductionFactor, rgb[1]//ReductionFactor)
    print(Direction)

# Draw Pixel on LED Matrix to indicate direction
def Draw_Led_Pixel( IrSeeker360Direction ):
    global x, y
    light_matrix.set_pixel( x-1, y-1, 0)
    if ( IrSeeker360Direction != 0 ):
        x = int( DirectionToXYMap[ (IrSeeker360Direction - 1) * 3 ] )
        y = int( DirectionToXYMap[ (IrSeeker360Direction - 1) * 3 + 1 ] )
        light_matrix.set_pixel( x-1, y-1, 100)

# MAIN PROGRAM
async def main():
    light_matrix.clear()
    # Draw the cross at the center of the display
    light_matrix.show([  0,  0,  0,  0,  0] +
                      [  0,  0,100,  0,  0] +
                      [  0,100,100,100,  0] +
                      [  0,  0,100,  0,  0] +
                      [  0,  0,  0,  0,  0])
    while (1):
        Ir_Read_360_Sensor_Data(port.C, 4)
        Draw_Led_Pixel(Direction)
        await runloop.sleep_ms(200)

runloop.run(main())