Mecanum Wheel Robot Car Kit Metal Chassis (without 18650 batteries)
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Mecanum Wheel Robot Car Electronic Parts Kit (without 18650 batteries)
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Mecanum Wheel Robot Car Full Package (without 18650 batteries)
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18650 batteries (3.7V) x 2
(the kit don’t include the batteries,click it to buy it separately)
Download PDF Tutorials:
If you received 2x model X motor driver and black acrylic board, please download the V1.1 manual.
https://osoyoo.com/manual/V1.1metal_mecanumcar.pdf
If you received 2x model X motor driver and transparent acrylic board, please download the V1.2 manual.
https://osoyoo.com/manual/V1.2metal_mecanumcar.pdf
Above robot cars are controlled by Arduino. if you have raspberry pi board, actually the robot car can also be controlled by Raspberry Pi. You can visit the following link to learn basic movement with raspberry pi.
Use Raspberry Pi to control Mecanum Omni wheel robot car
Mecanum Omni wheel is a very powerful wheel technology which allows robot car make omni-directional movement( parallel shift to left and right).
In this project, we will show how to use Arduino to control an Osoyoo Brand Mecanum wheel robot car.
OSOYOO Mecanum Wheels Robotic Car Chassis x 1 (2xleft-wheels/2xright-wheels and Motor x 4)
OSOYOO MEGA2560 board fully compatible with Arduino
OSOYOO V1.3 Wifi Shield x 1
OSOYOO Model X motor driver x 2
OSOYOO HC02 Bluetooth Module
OSOYOO battery box x 1
18650 batteries(3.7V) x 2 (the kit don’t include the batteries,click it to buy it separately)
Specifications:
First, please install the hardware as following pictures, insert OSOYOO wifi shield into arduino Mega2560 board.
Do NOT forget installing the two screws in following red box.
There are two types of Mecunum wheels, A and B Mecunum wheel; the difference between them is the orientation of rollers. For A Mecunum wheel, as shown below, rollers are orientated from lower right to upper left. Rollers for B wheels are installed in the opposite way.
A correct configuration requires each of four wheels is set in the way as shown below, where the rotation axis of each wheel’s top roller points to the center of the platform. Please notice that all the dynamic analysis and prewritten codes are based on this configuration.
Before connect wires, make sure you have inserted OSOYOO Wifi Shield onto MEGA2560 board already.
Motor Driver to Arduino UNO connection
Caution:
When insert/remove the 6-pin parallel cable plug into Model X 6-pin male socket, please hold the black plastic pin-holder to do operation. Never drag the wires to pull the plug out of the socket, otherwise it will damage the wires.
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_metal_chassis/for_mega2560/metal-2560-lesson1.zip, unzip the download zip file lesson1.zip, you will see a folder called lesson1 .
( or Download https://osoyoo.com/driver/mecanum_metal_chassis/for_mega2560/metal-2560-lesson1-reverse.zip, unzip the download zip file lesson1.zip, you will see a folder called lesson1 .)
Step 3: Connect mega2560 board to PC with USB cable, Open Arduino IDE -> click file -> click Open -> choose code “lesson1.ino” in lesson1 folder, load the code into arduino.
Step 4: Choose corresponding board/port for your project,upload the sketch to the board.
After running Lesson 1 code, the car will move
Forward/Backward; Left turn,Right turn;
Right Parallel Shift/Left Parallel Shift;
Down Left Diagonal / Up Right Diagonal;
Up Left Diagonal / Down Right Diagonal;
If the car does not move as per this sequence , you need check the wire connection.
Note: If you mecanum wheel car doesn’t move as per the above sequence, rather than the following sequence, you need to download the other series code again, in order to make sure that the car in next lesson work normally.
Backward/Forward; Right turn,Left turn;
Left Parallel Shift/Right Parallel Shift;
Up Right Diagonal/Down Left Diagonal;
Down Right Diagonal/Up Left Diagonal;
you need to download the following file and unzip the download zip file lesson.zip.
Noticed during test operation that one wheel (left front) was turning the opposite direction of the others in forward and reverse. Finally figured out that in fact it was the only one turning the right direction. I had to reverse the signal pins on the connections to the driver modules for the other motors to get it to work correctly.
You can do that in code as well by multiplying both the signal and encoder reading by negative one.