8. Sonar:bit

8.1. Introduction

Sonar:bit aims to measure the shortly distance.

../_images/05007_01.png

8.2. Characteristic


  • Designed in RJ11 connections, easy to plug.

8.3. Specification


Item Parameter
SKU EF05007
Connection RJ11
Type of Connection Digital output
Working Voltage 3.3V

8.4. Outlook


../_images/05007_02.png

8.5. Quick to Start


Materials Required and Diagram


  • Connect the Sonar:bit to J1 port and the OLED module to the IIC port in the Nezha expansion board as the picture shows.

../_images/05007_03.png

8.6. MakeCode Programming


Step 1

Click “Advanced” in the MakeCode drawer to see more choices.

../_images/05001_04.png

We need to add a package for programming, . Click “Extensions” in the bottom of the drawer and search with “PlanetX” in the dialogue box to download it.

../_images/05001_05.png

Note: If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu.

Step 2

Code as below:

../_images/05007_06.png

Result

  • The distance value displays on the OLED module.

8.7. Python Programming


Step 1

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor

../_images/05001_072.png

We need to add enum.py and distance.py for programming. Click “Load/Save” and then click “Show Files (1)” to see more choices, click “Add file” to add enum.py and distance.py from the unzipped package of PlanetX_MicroPython.

../_images/05001_081.png ../_images/05001_091.png ../_images/05007_10.png

Step 2

Reference

from microbit import *
from enum import *
from distance import *

while True:
    dis = DISTANCE(J1)
    display.scroll(int(dis.get_distance(0)))
    sleep(500)

Result

  • The detected distance displays on the micro:bit.

8.8. Relevant File


8.9. Technique File