KS4025 Keyestudio Micro:bit V2 Board

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. Specification

  • Working voltage: 3.3V

  • Power supply voltage: 3-3.3V

  • 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-M4 32 bit processor with FPU

  • Working temperature: 0-85℃

  • Micro USB program burning/power supply port

  • PH2.0 3V power supply port

  • 4mm alligator clip interface*5

  • Gold finger interface*20

  • Product size: 43*52mm

  • Weight: 9.6g

3. Features

  • Support PXT graphical programming interface developed by Microsoft

  • Support Windows, macos, iOS and Android system

  • The programming environment is based on WEB services, no need to download additional compilers

  • Burn and simulate program via USB on PC terminal

  • Burn and simulate program via Bluetooth

  • Support multiple communication programming languages including javasript, python, mbed c.

4. On-board Resource

  • Application Processor：Nordic nRF52833，64MHz ARM Cortex-M4, 512KB Flash、128KB RAM

  • Bluetooth Wireless Communication：Bluetooth 5.1 with Bluetooth Low Energy，2.4GHz ISM ，50 2MHz channels

  • Micro:bit Radio：2.4GHz Freq band，1Mbps or 2Mbps Channel rate

  • LSM303AGRthree-axis accelerator and magnetic sensor

  • Temperature sensing：on-core NRF52，Sensing range：-40℃ ~ 105℃

  • Speaker：JIANGSU HUANENG MLT-8530

  • Microphone：Knowles SPU0410LR5H-QB-7 MEMS，-38dB ±3dB @ 94dB SPL

  • 25 Pcs red LEDs

  • Three mechanical buttons including two user buttons and a reset button

  • A touch logo

  • MicroUSB power-supply/download connector，power socket, edge connector，including SPI, PWM, I2C, support 17 pcs GPIO

5. Function

6. Pins Description

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)

Features

V1.5

V2(New)

Processor

Nordic Semiconductor nRF51822

Nordic Semiconductor nRF52833

RAM

256KB Flash 16KB RAM

512KB Flash 128KB RAM

Exterior Chip

NXP KL26Z, 16KB RAM

NXP KL27Z, 32KB RAM

Microphone

/

MEMS Microphone with LED Indicator

Speaker

/

On-board Speaker

Touch LOGO

/

On-board touch LOGO

Extension Port

25 pcs pins, 3 pcs GPIO pins, PWM, i2c, SPI and extension port, three digital/analog pins

25 pcs pins, 4pcs GPIO pins, PWM, i2c, SPI and extension port, three digital/analog pins
Upgraded edge
connector design

I2C Bus

Shared I2C Bus

Specialized I2C Bus

Wireless

2.4Ghz
Broadcast/Bluetooth 4.0

2.4Ghz Broadcast
/Bluetooth 5.0

Power Supply

Micro USB 5V power supply, 3V port or battery power supply

Micro USB 5V power supply, 3V port or battery power supply

Working Current

90mA

200mA

Motion Sensor

ST LSM 303

ST LSM 303

Programming Software

C++, Makecode, Python, Scratch

C++, Makecode,Python, Scratch

Size

5cm*4cm

5cm*4cm