Two Channels Tracking Module(EF05019)
Contents
20. Two Channels Tracking Module(EF05019)#
20.1. 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.
20.2. Products Link#
20.3. Characteristic#
Designed in RJ11 connections, easy to plug.
20.4. 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 |
20.5. Outlook#
20.6. Quick to Start#
20.6.1. Materials Required and Diagram#
Connect the Two channels tracking module to J1 port in the Nezha expansion board as the picture shows.
20.7. MakeCode Programming#
20.7.1. 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.
20.7.2. Step 2#
20.7.3. Code as below:#
20.7.4. Link#
Link: https://makecode.microbit.org/_hy3VDtA3xAqE
You may also download it directly below:
20.7.5. Result#
Different icons display on the micro:bit in accordance with the different status detected by the tracking module.
20.8. Python Programming#
20.8.1. 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.
20.8.2. Step 2#
20.8.3. 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)
20.8.4. Result#
Different icons display on the micro:bit in accordance with the different status detected by the tracking module.