Button control clip

1. Learning objectives

In this course, we mainly learn how to use MakeCode graphical programming to achieve that when the A button on the micro:bit motherboard is pressed, the clip is released; when the B button on the micro:bit motherboard is pressed, the clip is clamped.

2. Building blocks

For detailed building block building steps, please refer to the installation drawings of [Assembly Course]--[Clip robot] in the materials or the building block installation album.

3. Motor wiring

The motor wiring on the left side of the car is inserted into the M1 interface of the Super:bit expansion board, and the black wire is close to the battery side;

The motor wiring on the right side of the car is inserted into the M3 interface of the Super:bit expansion board, and the black wire is close to the battery side;

The building block servo wiring is inserted into the S1 interface of the Super:bit expansion board, and the orange servo wiring is inserted into the yellow pin of S1.

As shown below:

! Notes:

When taking a course related to the building block servo for the first time, we need to remove the gear on the servo first 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 clamp to open to the widest point, and then install the servo gear. (If you have used Clip robot and servo-related programs before, you can skip this step)

4. Programming

Method 1 Online programming:

First, connect micro:bit to the computer via a USB data cable. 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 smart 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 smart software package https://github.com/YahboomTechnology/SuperBitLibV2 to start programming.

4.1 Adding extension packs

4.2 Building blocks used

The locations of the building blocks required for this programming are shown in the figure below.

4.3 Combined blocks

The summary program is shown in the figure below.

You can also directly open the microbit-Button-control-clip.hex file provided in this experiment and drag it into the browser that opens the URL, and the program diagram of this project source code will be automatically opened

5. Experimental phenomenon

After the program is downloaded successfully, the micro:bit dot matrix will display a smiley face, as shown in the figure below. Turn on the power switch, and the servo will be initialized to 0° (the clamp is released). When we press the micro:bit A button, the clamp is released; when we press the B button, the clamp is clamped.

If you need to restart, please press the reset button on the back of the micro:bit motherboard.