Basic micropython library to read the distance from an ultrasonic sensor US-100 in serial mode

This library allows the micro:bit to read the distance from an ultrasonic sensor US-100 (Y401)).

It uses the serial port to communicate with the device and to retrieve both the distance and temperature. By default it assumes pin15 connected to trigger/tx and pin14 connected to echo/rx

Contents

• 1   Main features
• 2   Library usage
  • 2.1   distance_mm()
  • 2.2   temperature()

1   Main features

• Get the distance in mm from the sonar to an object.
• Get the temperture measured by the sensor.
• Sample program.

2   Library usage

2.1   distance_mm()

Get the distance in mm.

from us100 import US100
from microbit import sleep


sonar=US100()
while True:
    print('%.1f' % (sonar.distance_mm()/10))
    sleep(1000)

2.2   temperature()

Get the temperature from the sonar

from us100 import US100
from microbit import sleep


sonar=US100()
while True:
    print('%i' % sonar.temperature)
    sleep(1000)