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Wukong Breakout Board

Introduction​

Wukong is a high integrated breakout board with multiple functions based on micro:bit, which has a similar size with the micro:bit with buzzer, servo and motor drivers on board.

With a built-in 400mAh Li-ion battery pack and the on-board power controlling system, it supports fast charge with only 20 minutes for full filling that can operate for more than 40 minutes a time.

The base board designs with standard 7x5 square bricks that can adapt perfectly to Lego.

Wukong Breakout Board

Characteristics​

Tiny shape with high integration Standard Lego bricks connection Most of the IO ports led out in GVS form Standalone IIC pots, available for OLED and BME280. Integrated buzzer and switch Integrated motor-drive circuit Integrated servo-drive circuit Support 5V sensors Built-in 400mAh Li-ion battery pack, on-board power controlling system, four LEDs indicate the power storage Support fast charge

Parameter​

ParameterDetailsInstructionNote
Item No.EF08207SKU-
Size40.00 X 58.12 X 24.53 mmIncluding Lego baseboard without micro:bitManual measurement, size in kind prevail
Weight41.6gIncluding Lego baseboard and the batteryManual measurement, weight in kind prevail
Power SwitchClick once to turn on, double-click to turn offFour LEDs indicate the power storage, support fast chargePower supply by the USB connection on board is supported
Battery400mAh Li-ion battery pack20 minutes for completing the charge that can operate for more than 40 minutes a timeAnti-explosion
Working Voltage3.7v~5vLi-ion battery pack 3.7v，USB 5v-
Working Temperature-20℃~60℃Charge temperature 0℃~40℃-
Motor DriveDual (M1，M2)Motor drive circuit onboard3.7V
Servo DriveEight ways servo connection (S0~S7)Servo drive circuit onboard-
IO Port Lead OutP0、P1、P2、P8、P12、P13、P14、P15、IICSupport 3V&5V modulesGVS
Rainbow LEDLED0、LED1、LED2、LED3Available for Neopixel databaseConnect to micro:bit P16 port
BuzzerPassive buzzer with a switch on boardAvailable for music databaseConnect to micro:bit P0 port
LED8 LEDs can be programmed on the base sideLight on, twinkle, breathing lightThe LED twinkles when power on
Base boardStandard 7*5 baseboardThe battery is placed in the middle-

Outlook and Dimensions​

Main modules​

Power supply, USB power connection and power storage indicating LED​

micro:bit adapter​

Motor-drive connection​

Servo-drive connection​

8 ways standard GVS connection and 5v connection​

I2C female header conncetion​

4 Rainbow LEDs​

Buzzer(reverse side) and switch​

Hardware versionBuzzer switchBuzzer
V1.0YesYes
V1.2NoneNone
V1.4 NoneNone
V2.0 NoneYes

8 LEDs(reverse side)​

Battery connection(reverse side)​

Fixed holes M3 for Lego (reverse side)​

Quick Start​

Hardware Connection​

Insert the micro:bit into the adapter(The logo side of the micro:bit stands towards the side for buzzer switch ). Click once to power on.

Software Programming​

MicroSoft makecode online programming: makecode.microbit.org

Add Package​

Click Extensions in the drawer of Advanced to see bricks menu.

Search wukong in the box and click it to add package. Completed.

User Guide​

Ways to power on&charge​

Click the power switch to power on, the power indicator lights up. Double-click the power switch to turn off the power, the power indicator will be off. Connect the USB power cable to the charging port, the constant light is the current remaining power, the remaining light will be lit in turn to enter charging mode.

Power indicator status: 1:

Normal state:

  1. Indicator light shows the power
  2. When the microbit is unplugged in the power-on state, the indicator light flashes three times and then turns off

Charging status:

  1. The indicator light of the current battery is always on, and the indicator light is flashing during charging.
  2. The four lights are always on when it is fully charged.
  3. When the microbit is pulled out in the powered-on state, the indicator light flashes three times and then the motor and servo power are turned off.

Notice: When the micro:bit is not plugged in and turns on the power, the power indicator will flash three times, and then turn off the power automatically

Breathing LEDs​

There are 8 blue breathing LEDs whose power on/off status and brightness can be controlled on the baseboard.

Links: https://makecode.microbit.org/_4ub57g5FuJ1v

You can also download it below:

Motor​

There are two kinds of motor driving connections named M1 and M2 that can connect most motors in the market.

Links:https://makecode.microbit.org/_78keCLdmU1Ez

You can also download it below:

Buzzer​

There is an on-board buzzer that is connected to the P0 port of the micro:bit, it can be programmed by the Music brick and can be powered on/off with the on-board buzzer switch.

Link: https://makecode.microbit.org/_JmM5btU4dHUb

You can also download it below:

Rainbow LEDs​

There are 4 Rainbow LEDs named LED0、LED1、LED2、LED3 that are connected to P16 port of the micro:bit and they can be programmed by the Neopixel brick.

Link：https://makecode.microbit.org/_61T2w6cqTib0

You can also download it below:

Servo​

Connect the servos to their driving connections S0~S7, they can be programmed by the servo bricks in Wukong expansions. 180° servos can be set from 0°~180°. Set 0° as the maximum speed of positive rotation, 180° as the maximum speed of negative rotation and 90° as stop for 360° servos , 0°~90° and 90°~180° are the scape for adjusting the speed.

Links: https://makecode.microbit.org/_6Pw63w49u5qq

You can also download it below:

5V Power Supply Pins​

There are 3 pairs on-board 5V power supply connections that can drive sensors or servos in 5V , it only requires to connect the connections for 5V modules to 5V power supply, and to connect the signal cables to the signal connections for servos or sensors.

Software Programming（Python editor）​

Python editor:https://python.microbit.org/v/2.0

Add Python File​

Download to unzip it: EF_Produce_MicroPython-master Go to Python editorhttps://python.microbit.org/v/2.0)

We need to add Wukong.py for programming.Click "Load/Save" and then click "Show Files (1)" to see more choices.

click "Add file" to add Wukong.py from the unzipped package of EF_Produce_MicroPython-master.

User Guide​

Light up the breathing LEDs​

There are 8 blue LEDs on the base part of the Wukong breakout board, their on/off status and light level could be controlled.

Turn to the breathing LED mode.(Write "False" to replace "true" in "set_light_breath(True)" to turn off the breathing LED )

from microbit import *
from Wukong import *
wk = WUKONG()
wk.set_light_breath(True)
  • Adjust the light intensity of the breathing LEDs
from microbit import *
from Wukong import *
wk = WUKONG()
wk.set_light(100)

Drive the Motor​

There are two driving motor ports in M1 & M2 that are able to connect with most motors in the market.

The motor drives clockwise for 2 seconds and then drives anticlockwise for another 2 seconds.

from microbit import *
from Wukong import *
wk = WUKONG()
while True:
    wk.set_motors(1, 100)
    wk.set_motors(2, 100)
    sleep(2000)
    wk.set_motors(1, -100)
    wk.set_motors(2, -100)
    sleep(2000)

Drive the Servo​

Connect servos to S0~S7, and drive them with the blocks in Wukong breakout board extension. Set 0~180 degrees for servos in 180 degrees. For 360 degrees servos, set 0 degree as the highest speed of driving anticlockwise, set 180 degrees as the highest speed of driving clockwise and 90 degrees to stop driving. Set the degrees ranged from 0~90 and 90~180 as the speed of the servos for driving anticlockwise and clockwise.

from microbit import *
from Wukong import *

wk = WUKONG()
while True:
    wk.set_servo(0, 0)
    sleep(2000)
    wk.set_servo(0, 180)
    sleep(2000)