Keyestudio Micro:bit Mini Smart Robot Car V2 User manual

Micro:bit Mini Smart Robot Car V2

Content
1. Description.............................................................................................................. 1
2. Specifications.......................................................................................................... 2
3. Packing List............................................................................................................. 2
4. Robot Installation...................................................................................................1
5. micro:bit Driver Installation................................................................................. 1
6. micro:bit Example Use.......................................................................................... 8
Step 1: Connect It.................................................................................................. 8
Step 2: Program It..................................................................................................9
Step 3: Download It.............................................................................................11
Step 4: Play It....................................................................................................... 12
7. micro:bit Pins........................................................................................................ 14
8. Get Knowledge of Micro:bit Shield Elements
Playing Music.........................................................................................................21
Micro:bit LED Matrix Display...............................................................................24
RGB Light Cycle.................................................................................................... 27
RGB Light Test...................................................................................................... 36
Light Sensing.........................................................................................................46
Motor Driving........................................................................................................ 49
9.Line Tracking Robot
Testing the tracking sensor.................................................................................55
How to Build a Line Tracking Robot?................................................................ 59
10.Ultrasonic Following Robot

Ultrasonic Ranging............................................................................................... 64
How to Build an Ultrasonic Following Robot?..................................................71
11. Obstacle Avoiding and Following Robot
Infrared Avoiding Obstacles............................................................................... 76
How to Build an Obstacle Avoiding Robot?......................................................81
How to Build an Object Following Robot?........................................................85
Infrared Remote Control..................................................................................... 90
How to Build an Infrared Remote Control Robot?........................................105
11. Bluetooth Controlling Robot
Andriod Bluetooth Controlling Robot.............................................................. 110
IOS Bluetooth Wireless Programming and Control...................................... 125
How to Build IOS Bluetooth Control Robot....................................................142
12. Related Resources Link.................................................................................. 158

1
1. Description
Here comes a mini STEM education DIY robot platform based on Micro:bit programming.
Micro: bit is an ARM structure microcontroller designed by BBC. It is only half size of a credit card, onboard comes
with Bluetooth, accelerometer, compass, three buttons, 5x5 LED matrix, mainly used for teens programming
education.
The Micro:bit Mini Smart Robot Car V2 integrates ultrasonic and infrared obstacle avoidance, line following as well
as infrared and Bluetooth control functions.
It comes with a passive buzzer for playing music; a KEYES-2812-18R module for controlling 18 RGB LED colors; a
photocell for detecting the light intensity; two RGB lights used as direction light.
Moreover, the micro:bit car supports charging by 18650 batteries when run out of power. It is available to adjust the
motor speed.
This micro:bit robot is a perfect toy for kids to start learning robotics. The plug-and-play allow children to quickly
learn graphic programming in entertaining, nurturing children's interest in science and logical thinking.

2
2. Specifications
1) Voltage: DC 5V
2) Current: USB power supply or power supply with a capacity greater than or equal to 1A
3) Maximum power: maximum output power is 10W
4) Operating temperature range: 0-50 degrees Celsius
5) Dimensions: 120*90.7mm
6) Environmental attributes: ROHS
3. Packing List
Note: the Micro:bit main board is Not Included！

3
No.
Item
Quantity
Image
1
Micro:bit robot bottom shield
V2
(Black and Eco-friendly)
1
2
Acrylic pack of 3 pieces
T=3MM
1

4
3
HC-SR04 ultrasonic sensor
1
4
KEYES-2812-18R Module
（welded with yellow curved
pin）
1
5
N20 motor wheel
diameter:43mm ; width:
19mm ;
hole diameter: 3mm type D
ABS plastic + rubber yellow
2
6
steel universal wheel
W22*H15MM
1

5
7
M1.6*10MM round head screw
8
8
M3*6MM round head screw
8
9
M1.6 304 stainless steel nut
8
10
Double pass M3*35MM hex
copper pillar
4
11
M3*10MM flat-head screw
1
12
M3 Nickel plated nut
1

6
13
M2*12MM round head screw
8
14
M2 Nickel plated nut
6
15
yellow-black handle 3*40MM
phillips screwdriver
1
16
USB Cable
A/MICRO OD: 4.0 black
L=1.2m eco-friendly
1
17
Male to female jumper wire
10CM random color
3
18
Male to female jumper wire
15CM random color
4

1
4. Robot Installation
Firstly prepare all the assembly components before install the micro:bit robot.
a. Next let’s begin to install the wheel on Micro:bit bottom shield.
Prepare well universal wheel, two yellow wheels, 4pcs M3*6MM round-head screws and 4pcs dual-pass
M3*35MM hex copper pillars.

2
b. To begin with, should use two screws of universal wheel to mount the wheel on the bottom shield.

3
The front and back view are shown as below picture:

4
After that, install two yellow wheels into the shield’s motor.
c. Mount the 4pcs M3*6MM round-head screws and 4pcs dual-pass M3*35MM hex copper pillars onto the bottom
shield.

5

6
d. Well, ready to install the electronic elements:
Two Acrylic plates
Ultrasonic module
KEYES-2812-18R module
Micro:bit main board
6pcs M1.6*10MM round-head screws
6pcs M1.6 304 stainless steel nuts
4pcs M3*6MM round-head screws
1pcs M3*10MM flat-head screw
1pcs M3 nickel plating nut
F-M Jumper wires

7
At first fix the KEYES-2812-18R module on the Acrylic plate with 2pcs M1.6*10MM round-head screws and 2pcs M1.6
304 stainless steel nuts.

8

9
Then mount the HC-SR04 ultrasonic module on the Acrylic plate with 4pcs M1.6*10MM round-head screws and 4pcs
M1.6 304 stainless steel nuts.

10
Installed well, fix the two Acrylic plates together with 1pcs M3*10MM flat-head screw and 1pcs M3 nickel plating nut

11