Keyestudio KS4028 User manual

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Smart Home Kit for Micro:bit
Contents
Smart Home Kit for Micro:bit..................................................................................... 1
1.Introduction：.............................................................................................................. 3
2.Description：................................................................................................................4
3.Kit List：......................................................................................................................... 5
4. Preparations:............................................................................................................. 10
4.1 Background Information about Micro:bit..............................................10
( 1 )What is Micro:bit?.................................................................................10
( 2 )Layout...................................................................................................... 11
( 3 ) Pinout......................................................................................................13
( 4 )Notes for the application of Micro:bit main board....................14
4.2.Install Micro:bit driver..................................................................................16
5.Getting Started with Micro:bit.............................................................................. 16
5.1 Write code and program............................................................................ 17
5.2.Makecode：.................................................................................................... 28
5.3 Quick Download............................................................................................29
5.4.Makecode extension library:......................................................................37
5.4.Resources and test code............................................................................. 46
5.5.Input test code...............................................................................................47

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5.6. Install CoolTerm：........................................................................................52
6.Install the Smart Home........................................................................................... 55
7. Project：...................................................................................................................109
Project 1: Heartbeat..........................................................................................109
Project 2: Light A Single LED..........................................................................112
Project 3: LED Dot Matrix................................................................................ 117
Project 4: Programmable Buttons................................................................ 121
Project 5: Temperature Detection.................................................................128
Project 6: Geomagnetic Sensor..................................................................... 142
Project 7: Accelerometer................................................................................. 156
Project 8: Light Brightness Detection.......................................................... 167
Project 9: Speaker..............................................................................................176
Project 10: Touch-sensitive Logo.................................................................. 189
Project 11: Microphone................................................................................... 193
Project 12: Play Music...................................................................................... 201
Project 13: Dodge Bullets................................................................................205
8.Expansion Projects：............................................................................................. 240
Project 1：LED Blinks........................................................................................241
Project 2：Breathing LED................................................................................ 246
Project 3：6812 2x2 Full Color RGB.............................................................254
Project 4：PIR Motion Sensor....................................................................... 270
Project 5：Induction Lamp............................................................................. 278

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Project 6: Adjust angles of servo.................................................................. 282
Project 7: 130 Motor.........................................................................................288
Project 8：Lithium Battery Power Module................................................ 298
Project 9：1602 LCD.........................................................................................302
Project 10：Steam Sensor...............................................................................310
Project 11：Rains Alarm.................................................................................. 317
Project 12：Analog Gas（MQ-2）Sensor.................................................. 322
Project 13：Gas Leakage Detector...............................................................331
Project 14：DHT11 Temperature and Humidity Sensor........................336
Project 15：Temperature and Humidity Display..................................... 347
Project 16：Multiple Functions..................................................................... 351
Project 17：BT-controlled LED...................................................................... 354
Project 18：Smart Home.................................................................................358
9.Resources:.................................................................................................................361
1.Introduction：
Fueled by the rapid development of technology, smart homes
automatically controlled remotely by smart phones and other devices have
become more common. For the same reason, they have increasingly

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gained closer attention and caught people’s fancy.
Bearing the aim to make improvements in household living conditions, the
smart home system has been integrated with technologies including
computer science, telecommunication, automatic control and others and
emerged as a comprehensive and smart system featuring safety,
convenience, coziness, services , utility and environmental consciousness.
2.Description：
Launched by Keyestudio, this smart home kit is based on the open-source
hardware of Micro:bit and designed for those who dream of living a more
comfortable life with the help of technologies.
This smart home system, with Micro:bit as its control board, is equipped
with a 1602 LCD, a DHT11 temperature and humidity sensor, an analog gas
sensor(MQ_2), a PIR motion sensor , a 6812 RGB module, a servo, a steam
sensor, a Micro:bit BT and other sensors.
With the help of these sensors, this kit can be applied to detect
temperature, humidity and the concentration of flammable gases in your
home and open and close doors. Furthermore, all the information detected
can display on 1602 LCD in real time available for you to check and monitor

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via smart phones or iPad. By the way, it supports powering by solar energy
or via USB cable.
This tutorial will guide you to make and control the smart home kit by the
code written in the online graphical programming platform Makecode. In
this process, not only can you enhance your ability to make stuffs but also
learn the skills of programming.
MakeCode for micro:bit is the most widely used graphical programming
environment on the micro:bit official website. It is based on the graphical
programming environment developed by Microsoft's open source project
MakeCode. This graphical programming can also be converted to textual
version, namely Python or JavaScript. The combination of code and
graphics makes it very convenient and easy to learn. At the same time, it
can be simulated or programmed for electronic components.
3.Kit List：
When you get this delicate kit, please confirm whether all components
listed below have been delivered.
#
Parts
Quantity
Picture

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1
Micro:bit Main Board
1
2
Keyestudio Micro:bit
Expansion Board with
IO Port
1
3
Wooden Board
7
4
Acrylic Board
3
5
6812 RGB Module
1
6
Analog Gas Sensor
1
7
130 Motor Module
1
8
Steam Sensor
1

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9
DHT11 Temperature
and Humidity Sensor
1
10
PIR Motion Sensor
1
11
Yellow LED Module
1
12
Rechargeable Lithium
Battery Power
Module with Solar
and USB Ports
1
13
Battery Holder
1
14
Micro:bit Solar Energy
Panel
1
15
Servo
2
16
I2C 1602 LCD Module
1
17
Rocker Switch
1

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18
15cm 3Pin F-F
DuPont Wire
4
19
20cm 3Pin F-F
DuPont Wire
2
20
20cm F-F DuPont
Wire
4
21
20cm 4Pin F-F
DuPont Wire
1
22
200mm 2Pin DuPont
Wire
2
23
M2*8MM
Round-head Screw
3
24
M1.4*6MM
Round-head
Self-tapping Screw
10
25
M3 Nickel-plated
Self-locking Nut
5
26
M4*8MM
Round-head Screw
18
27
M3*6MM
Round-head Screw
9
28
M3*10MM
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Round-head Screw
29
M2*12MM
Round-head Screw
5
30
M4 Nickel-plated Nut
18
31
M3 Nickel-plated Nut
6
32
M2 Nickel-plated Nut
7
33
M3*8MM
Round-head Screw
2
34
Wrench
1
35
3.0*40MM
Screwdriver
Red-Black
1
36
2.0*40MM
Screwdriver
Purple-Black
1
37
M3*45MM Dual-pass
Copper Pillar
4
38
USB Cable
AM/MK5P(micro)
Black OD：3.5 L=1M
PVC
1

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39
F5 Blue to Blue LED
2
40
18650 Battery（Not
Included）
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4. Preparations:
4.1 Background Information about Micro:bit
( 1 )What is Micro:bit?
Micro:bit is an open source hardware platform based on the ARM
architecture launched by British Broadcasting Corporation (BBC) together
with ARM, Barclays, element14, Microsoft and other institutions. The core
device is a 32-bit Arm Cortex-M4 with FPU micro-processing.
Though it is just the size of a credit card, the Micro:bit main board is
equipped with loads of components,including a 5*5 LED dot matrix, 2
programmable buttons, an accelerometer, a compass, a thermometer, a
touch-sensitive logo and a MEMS microphone, a Bluetooth module of low
energy, and a buzzer and others. Thus, it also boasts multiple functions.
The buzzer built in the other side of the board makes playing all kinds of
sound possible without any external equipment. The golden fingers and