# KS0468 Keyestudio Storage Bag Micro:bit Main board Kit

![](media/wps1.png)

## 1. Description

Micro: bit is an ARM-based microcontroller designed by BBC. Consisting of onboard Bluetooth, accelerometer, electronic compass, three buttons, 5 x 5 LED dot matrix, it is only half the size of credit card and mainly used for programming education for teenagers. In order to carry it conveniently, we put a micro: bit control board and two manuals in storage bag. The storage bag is light and beautiful.

## 2. Parameters

- Working voltage: 3.3V
- Micro USB program burning / power supply port: 5V
- PH2.0 power interface: 3-3.3V
- Alligator clip interface: 3-3.3V
- Detection range: 0-3.3V
- Processor: ARM Cortex-M0 microprocessor
- Working temperature: 0-85 ℃

Interface Type:

- Micro USB program burning / power supply port
- PH2.0 3V power supply port
- 4mm crocodile clip interface * 5
- Gold Finger Interface * 20
- Size: 43 * 52mm
- Packing size: 105 * 55 * 30mm
- Weight: 8.6g

## 3. Features

- Support PXT graphical programming interface developed by Microsoft
- Support Windows, macos, ios, Android and other operating systems
- The programming environment is based on WEB services, no need to download additional compilers
- Burn and simulate program via USB on PC terminal
- Wirelessly burn and simulate program on the mobile terminal via Bluetooth
- Support multiple communication programming languages including javasript, python, mbed c

## 4. On board Resources

- Nordic nRF51822 Bluetooth low energy chip: 16MHz ARM Cortex-M0, 256KB Flash, 16KB RAM
- NXP KL26Z microcontroller: 48MHz ARM Cortex-M0 +, support USB2.0 OTG
- ST LSM303AGR three-axis acceleration sensor and magnetic sensor
- form a 5 * 5 matrix with 25 red LEDs
- 3 mechanical buttons, 2 user buttons and 1 reset button included.
- Micro USB power supply / download interface, power interface, 23pin gold finger signal interface, including SPI, PWM, I2C and support 17 GPIO

![](media/wps2.png)

![](media/wps3.png)

## 5. Pins Diagram

![](media/wps4.jpg)

## 6. Pins Function

|   GPIO   | P0，P1，P2，P3，P4，P5，P6，P7，P8，P9，P10，P11，P12，P13，P14，P15，P16，P19，P20 |
| :------: | :----------------------------------------------------------: |
| ADC/DAC  |                   P0，P1，P2，P3，P4，P10                    |
|   I2C    |                      P19(SCL)，P20(SDA)                      |
|   SPI    |                P13(SCK)，P14(MISO)，P15(MOSI)                |
|   PWM    |                   P0，P1，P2，P3，P4，P10                    |
| Occupied | P3(LED Col1)，P4(LED Col2)，P5(BUTTON A)，P6(LED Col9)，P7(LED Col8)，P9(LED Col7)， P10(LED Col3)，P11(Button B) |

## 7. Difference between micro: bit and Arduino

|                         |                         micro : bit                          | Arduino                               |
| :---------------------: | :----------------------------------------------------------: | ------------------------------------- |
|       User group        |                   Elementary school above                    | Senior student above                  |
|        Processor        |                     32-bit ARM Cortex-M0                     | 8-bit microcontroller ATmage328P      |
|          Size           |                          43mm*52mm                           | 53mm*69mm                             |
| Programming environment |       online programming tool + local programming tool       | local programming tool（Arduino IDE） |
|  Programming language   |         Graphical programming；MicroPython; Scratch          | C;C++                                 |
|   Onboard components    | I/O singal port；Bluetooth; accelerometer;Electronic compass; button; LED dot matrix \|\| I/O signal port；LED |                                       |
|     External device     |                    Alligator clip; shield                    | Jumper wire, shield                   |
|   Compatible voltage    |                              3V                              | 3V-5V                                 |