Two Channels Tracking Module(EF05019)

Introduction

The two channels Tracking Module has integrated two groups of reflective infrared pair diode, which can be used to make line tracking smart cars.

Products Link

ELECFREAKS PlanetX Two Channels Tracking Module

Characteristic

Designed in RJ11 connections, easy to plug.

Specification

Item	Parameter
SKU	EF05019
Connection	RJ11
Type of Connection	Digital output
Working Voltage	3.3V
Effective Distance	8~11mm
Black Line	Low level output
White Line	High level output

Outlook

Quick to Start

Materials Required and Diagram

Connect the Two channels tracking module to J1 port in the Nezha expansion board as the picture shows.

MakeCode Programming

Step 1

Click "Advanced" in the MakeCode drawer to see more choices.

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.

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:

Link

Link: https://makecode.microbit.org/_hy3VDtA3xAqE

You may also download it directly below:

Result

Different icons display on the micro:bit in accordance with the different status detected by the tracking module.

Python Programming

Step 1

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor

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

Step 2

Reference

from microbit import *
from enum import *
from tracking import *

tracking = TRACKING(J1)
while True:
    if tracking.get_state() == 11:
        display.show(Image.YES)
    elif tracking.get_state() == 10:
        display.show(Image.SAD)
    elif tracking.get_state() == 00:
        display.show(Image.NO)
    elif tracking.get_state() == 01:
        display.show(Image.HAPPY)

Result

Different icons display on the micro:bit in accordance with the different status detected by the tracking module.

Learning Mode

The latest dual-channel line-following sensor enables sensitivity optimization through learning mode.

Point the probes of the dual-channel line-following sensor directly at the map background area, then press the learning button.

The probe indicator lights will start flashing.

When the indicator lights flash rapidly, slide the line-following probes horizontally back and forth across the map background and line track.

Keep sliding the probes back and forth until the probe fill lights stop flashing — the learning process is finished.

Notes

In use, the ground clearance of the line-following probes must be kept between 8 mm and 16 mm.

After successful learning, all indicator lights will turn off. When a probe detects the line track, its corresponding indicator light will light up.