In this lesson, we will use mobile to control our robot car and make an imitation driving. Since it is a mock driving, we will use a virtual steering wheel and gear in our APP to imitate their counterparts in a real car.
Step 1: Install the smart car basic frame work as per Lesson 1 . If you have already completed installation in Lesson 1 , just keep it as is.
Step 2: Insert Bluetooth Module
Please insert the Bluetooth slot as the following diagram (Remember: DO NOT remove any existing wires installed in Lesson 1):
Search “OSOYOO imitation driving” in
Google Play or Apple APP store
Step 1: Install latest IDE (If you have IDE version after 1.1.16, please skip this step). Download IDE from https://www.arduino.cc/en/software, then install the software.
Step 3: Connect OSOYOO Basic Board for Arduino to PC with USB cable, Open IDE -> click file -> click Open -> choose code “lesson6.ino” in lesson6 folder, load the code into OSOYOO Basic Board for Arduino. (Notice: Remove the bluetooth module and Shut off your battery or Unplug your power adapter when upload sketch code to OSOYOO Basic Board for Arduino.)
Step 4: Choose corresponding board/port for your project,upload the sketch to the board.
Step 5:Install APP into your mobile phone:
1) Install APP on Android device as following
In Google Play store search APP name “OSOYOO imitation driving”, download the APP as following and install it in your smartphone
In Apple APP store search APP name “OSOYOO imitation driving”, download the APP as following and install it in your smartphone
Explanation of APP UI (UI is different between Android and IOS)
Connect HC-02 bluetooth in Android phone. There is a “BT Search” button in Android APP: When click this button, you will see a Bluetooth device list which has been paired with your APP. Select the HC-02 device to connect the car. Once the HC-02 is connected, Bluetooth Status will change from Disconnected to Connected. You can control your car only when Bluetooth is connected.
Connect HC-02 bluetooth in iPhone/iPad , simply click the “Connect” button, a HC-02 device will show up in a pop-up list. Click that HC-02 device to connect the Bluetooth module to your iPhone. Then the Connect button will change name to Disconnect.
Engine toggle : When Engine toggle is set to OFF(white), car will stop and all buttons in the APP will be disabled. When Engine toggle is set to ON(red), car will start to move. All other movement control buttons will be active.
Forward/Backward gear switch: This gear switch can control the car is moving ahead or reverse like real car gear.
F1,F2,F3,F4,F5 customized button. In this lesson, we only use F5 which pause the car’s movement. The difference between F5 and Engine OFF button is that Engine OFF button when touched, all other buttons will be disabled. You should toggle the “Engine” button again to enable other button. On the other hand, when F5 is clicked, the car will stop but all other buttons is still active. Even if you don’t touch any button and just change your cellphone’s angle position(like you move the steering wheel), the car will move again.
Direction Steering Wheel : When you rotate your mobile phone angle, the steering wheel will change angle as per your mobile phone rotation angle. This will make your car change direction. For example, when steering wheel make clockwise rotation, car will move to left. Remember, the steering and Forward/Backward gear should work together, just like when you are driving a real car. For example, when you want back your car to a right side packing lot, you need set Gear to R position and rotate your steer to count-clockwise direction.
Speed+: Make the robot car speed up
Speed-: Make the robot car slow down
Connect the APP to the HC-02 Bluetooth Module
Connecting with an Android device:
If you are using an Android device and have not yet paired the Bluetooth module with your cell phone, please pair the Bluetooth module first before opening the APP. In your cell phone Settings -> Bluetooth, find a Bluetooth device called HC02 and pair it with the password 1234. Once the HC02 device is paired, open the APP and click the “BT Search” button to connect the APP to the HC02 device.
Connecting with an iOS device: If you are using an iOS device, simply open the APP, click the Connect button, and you will see a list of Bluetooth devices. Select the HC02 device.
Note: For Android device, when you click BT search button and get the following error pop, Please follow the next steps: 1. long-press the APP inco, then click “APP info” 2. click “Permissions” 3.click “Nearby device”, then change the option as “Allow” (To learn more about settings, you can visit the video: https://osoyoo.com/picture/V2.1_Arduino_Robot_Car/Lesson7/APP.mp4)
Drive your Robot Car
Now that you have installed your hardware and software for this lesson, let’s drive our car!
Step 1) Put your robot car on the ground and turn on the battery switch.
Step 2) Go to your mobile phone -> Settings -> Bluetooth settings and search for a Bluetooth device called HC-02. Pair it with the code 1234.
Step 3) Open the OSOYOO imitation driving Robot APP, click the “BT Search” button, and find the Bluetooth device you have paired.
Step 4)Turn on the Engine toggle and click Speed+ to increase the speed of the robot car, as it is very slow at first. When you rotate your mobile phone, the car will change direction.
