• sales

    +86-0755-88291180

Chapter 2 of KitiBot-Microbit: Keys User Guide

Keys

There are two keys on Micro:bit, A and B. In this Chapter, we are using them.


Keys programming we need to use the block "on button .. pressed". With the block, the micro:bit could detect if key A is pressed or if A and B keys are pressed at the same time. If the key is pressed, the scripts in this block will run.


According to Chapter 1, let's learn how to program keys. We try to create a project that LED matrix display A, B and C separately when key A, B, A and B are pressed.


First, create new project. Find block "on button A pressed" in Input class and drag it to the right. Add one string display block. Copy the button and string blocks change for B key and AB keys operation.

Download the code to micro:bit for testing. You can also check the effect according to left simulate area.

Buttons could also be controlled by another block. Different with the last one, the block we used before run the included program when buttons are pressed. This block will return a value "true" if buttons are pressed, otherwise return value "false"


We create a new project and rewrite it with this block. In this project, we need to use if-else block. If it get ture, the blocks included will run, otherwise the blocks in else will run.


Add blocks that display string when buttons are pressed. You can simulate the effect on the left area


If you are much careful, you will find that the project first detect if A and B are pressed at the same time, then detect if A and B is pressed separately. You can try to change the order to test what will happen if the order is changed

TAG: Raspberry Pi Raspberry pi Pico development board RP2040 Core A Based On Official RP2040 Dual Core Processor Bus Servo Adapter A CPU Monitor Display Raspberry Pi display ESP32-S3 Raspberry Pi MLX90640 MPS2280D Raspberry Pi 5 PCIe to M.2 NVMe Dual SSD Adapter Board HAT Pi5 Double 2280 Flash Firmware Flashing and Erasing User Guide NVIDIA Jetson Orin Nano Developer Kit Official Original 8GB AI 40Tops For Embedded and Edge Systems SpotPear GC9107 Raspberry Pi 1.54inch OLED CAN FD Analyzer RV1103 SC3336 ESP32-S3N8R8 7inch LCD Display TouchScreen 800×480 WiFi Bluetooth CAN RS485 Sensor ESP32-S3 Development Board 1.47 inch LCD Screen Display 172x320 SD-Port LVGL USB Arduino-check-library-path Arduino MLX90640 AI Machine Vision Kit OAK-D-POE JPEG Encoder 12MP IP67 Waterproof 4TOPS OpenCV Camera