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In this lesson3, we will add a 3-Point tracking sensor module to the robotic car built in Lesson 1.The software in this lesson will read data from the 3-Point Tracking sensor module and automatically guide the smart car to move along the black track line in the white ground.
OSOYOO Mecanum wheels robotic car chassis x 1 (2xleft-wheels/2xright-wheels and Motor x 4)
OSOYOO Mega2560 board fully compatible with Arduino UNO/Mega2560 x 1
OSOYOO V1.0 Wifi shield x 1
OSOYOO Model X motor driver x 2
OSOYOO 3-Point Tracking sensor module
OSOYOO Battery box x 1
18650 Batteries(3.7V) x 2
You must complete lesson 1 (assembling the car), before you continue on with this lesson.
We will add a 5-Point tracking sensor module to the robotic car built in Lesson 3.
Start the installation from previous status of Lesson 1 .
If you have installed Lesson 1, no need change anything, just keep the hardware wire connection as it is.
Connect 5-point tracking sensor board to Wifi Shield as per following table(请画电路）
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Step 1: Install latest Arduino IDE (If you have Arduino IDE version after 1.1.16, please skip this step). Download Arduino IDE from https://www.arduino.cc/en/Main/Software?setlang=en , then install the software.
Step 2: Download https://osoyoo.com/driver/mecanum/mecanum-2560-lesson3B.zip , unzip the download zip file lesson3.zip, you will see a folder called lesson3 .
Step 3: Connect mega2560 board to PC with USB cable, Open Arduino IDE -> click file -> click Open -> choose code “lesson3.ino” in lesson folder, load the code into arduino as following:.
Step 4: Choose corresponding board/port for your project,upload the sketch to the board.
Step 5:Adjust the sensitivity of tracking sensor modules. Turn on and hold the car and adjust the potentiometer on the tracking sensor with cross screwdriver until you get the best sensitivity status: the signal indicate LED light will turn on when sensor is above white ground, and the signal LED will turn off when the sensor is above black track.
Prepare a black track (the width of the black track must be between 20mm and 30mm) in white ground. Please be noted that the bend angle of track can’t be too sharp otherwise the car will move out of the track.
Turn on the car and put the middle of tracking sensor module facing over black track, and then the car will move along the black track automatically.
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