Welcome to Building:bit Superkit repository
3.APP control
APP control
APP control1. Learning objectives2. Building blocks3. Motor wiring4. Programming5. Experimental phenomenon5.1 Download APP5.2 APP remote controlAPP interface function introduction:
1. Learning objectives
In this course, we mainly learn how to use MakeCode graphical programming to realize Bluetooth APP remote control of security automatic doors.
2. Building blocks
For the building blocks steps, please refer to the installation drawings of [Assembly Course]-[Auto-door] in the materials or the building blocks installation album.
3. Motor wiring
Insert the building blocks servo wiring into the Super:bit expansion board S1 interface, and the servo orange wiring into the yellow pin of S1.
As shown in the figure below:

! Notes:
When taking the course related to the building block servo for the first time, we need to remove the blue building block installed on the servo and upload the program of this course to the micro:bit; then turn on the power switch of the Super:bit expansion board and wait for the building block servo to turn to the initial position; then, we can turn off the power, adjust the security automatic door to the open state, as shown in the figure below, and then install the blue building block. (If you have used the security automatic door and servo related program before, you can skip this step)


4. Programming
Method 1 Online Programming:
First, connect the micro:bit to the computer via a USB data cable, and the computer will pop up a U disk. Click the URL in the U disk: https://makecode.microbit.org/ to enter the programming interface. Then, add the Yahboom software package https://github.com/YahboomTechnology/SuperBitLibV2 to start programming.
Method 2 Offline programming:
Open the offline programming software MakeCode and enter the programming interface. Click [New] and add the Yahboom software package https://github.com/YahboomTechnology/SuperBitLibV2 to start programming.
For the summary program of this course, please open the microbit-Auto-door-APP-control.hex we provided in the MakeCode programming interface to view it.
5. Experimental phenomenon
5.1 Download APP
Android users, please use the mobile browser to scan the following QR code to download and install the APP;
Apple users, please use the hand camera to scan the QR code to download and install the APP.

! Note: During the installation or use of the APP, if the mobile phone prompts that any permissions need to be obtained, please select "Agree".
5.2 APP remote control
1) After the program is downloaded successfully, turn on the power switch of the car, and the micro:bit dot matrix will display an "S" pattern, as shown in the figure below. This is the state of Bluetooth disconnection.

2) Turn on the Bluetooth of the mobile phone, open our APP, you can see the interface as shown in the figure below, click Allow APP to use positioning information.

3) After the mobile phone is close to the car and waits for a while, the Bluetooth will automatically connect; if it does not automatically connect, we can click [Search Bluetooth devices] to search for the device to connect.

After the Bluetooth is successfully connected, a smiley face pattern will be displayed on the micro:bit dot matrix; if the Bluetooth is disconnected, a crying face pattern will be displayed on the dot matrix.

[Bluetooth successful connection status] [Bluetooth disconnection status].
APP interface function introduction:
Main control interface:
- The forward button controls the door to close.
- The backward button controls the door to open.
- Press the piano key to hear the buzzer play different tones.

Car light interface:

RGB light interface:
Due to the upgrade of micro:bit V2 motherboard, the Bluetooth code control deleted the RGB light control and changed to dot matrix display.

The buttons under the mode options have no defined functions yet.