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Content # # bollerwagen.py for card10 # # WHATIS # # - interactive light for your bollerwagen or other gefährt # - signals stop via red light # - signals movement via green light # - signals turns by flashing yellow light # # HOWTO # # - mount vertically onto your bollerwagen # - use at least two card10s for two sides of your bollerwagen :-) # - use bottom right switch to change between right and left turn indicator # import bhi160 import utime import buttons import leds import color MOTION_THRESHOLD = 7 BLINKER_TIME = 4 STILL = 1 RIGHT = 2 LEFT = 3 MOVING = 4 listen = LEFT col = color.WHITE state = 0 newstate1 = STILL newstate2 = STILL sensor = 2 sensors = [ {"sensor": bhi160.BHI160Orientation(), "name": "Orientation"}, {"sensor": bhi160.BHI160Accelerometer(), "name": "Accelerometer"}, {"sensor": bhi160.BHI160Gyroscope(), "name": "Gyroscope"}, ] blinker = 0 def abs(x): if x >= 0: return x return -x def set_all(col): leds.set_all([col, col, col, col, col, col, col, col, col, col, col]) def turning_light_on(): if state == listen: set_all(color.COMMYELLOW) else: leds.clear() def turning_light_off(): leds.clear() leds.set_powersave(True) while True: # read gyro sensor samples = sensors[sensor]["sensor"].read() if len(samples) > 0: sample = samples[0] newstate2 = newstate1 if abs(sample.x) + abs(sample.y) + abs(sample.z) < MOTION_THRESHOLD: newstate1 = STILL elif sample.y > MOTION_THRESHOLD: newstate1 = RIGHT elif sample.y < -MOTION_THRESHOLD: newstate1 = LEFT else: newstate1 = MOVING # choose the state if newstate1 == newstate2: if newstate1 != state: state = newstate1 if state == STILL: set_all(color.RED) elif state == MOVING: set_all(color.CAMPGREEN) else: turning_light_on() # flash the turning light if state == LEFT or state == RIGHT: blinker = blinker + 1 if blinker == BLINKER_TIME: turning_light_off() elif blinker == BLINKER_TIME * 2: turning_light_on() blinker = 0 # read button with Prellschutz v = buttons.read(buttons.BOTTOM_RIGHT) if v == 0: button_pressed = False if not button_pressed and v & buttons.BOTTOM_RIGHT != 0: button_pressed = True if listen == LEFT: listen = RIGHT else: listen = LEFT utime.sleep(0.1)