Uctronics K0066 User manual

Arduino Smart Bluetooth Robot Car
Kit
User Guide
UCTRONICS

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Table of Contents
1. Introduction......................................................................................................................................................4
1.1 Packing list.............................................................................................................................................5
2. Assembly............................................................................................................................................................6
2.1 Arduino Uno R3...................................................................................................................................6
2.1.1 Specifications............................................................................................................................6
2.2 HC-SR04 Ultrasonic Sensor Module with Bracket / Holder..................................................7
2.2.1 Working Principle....................................................................................................................7
2.2.2 Specification..............................................................................................................................8
2.2.3 Wiring diagram:.......................................................................................................................9
2.3 L293D Motor Drive Expansion Board for Arduino...................................................................9
2.3.1 Specification..............................................................................................................................9
2.4 SG90 9g micro small servo motor ............................................................................................. 10
2.4.1 Specification........................................................................................................................... 11
2.5 2WD Driver Motor Encoder Robot Smart Car Chassis Kits................................................ 11
2.5.1 Specification........................................................................................................................... 11
2.6 HC-05 Bluetooth Serial transmission Wireless Module ...................................................... 12
2.6.1 Specification........................................................................................................................... 12
2.6.2 Pin definition ......................................................................................................................... 13
2.6.3 Application:............................................................................................................................ 13
2.7 Infrared IR Wireless Remote Control Sensor Module Kits.................................................. 14
2.7.1 Specification........................................................................................................................... 14
2.7.2 Dimension .............................................................................................................................. 15
3. Pin Definition................................................................................................................................................. 16
4. Wiring .............................................................................................................................................................. 17
5. Installation...................................................................................................................................................... 18
5.1 Installation of the Components................................................................................................... 18
5.2 Installation of the Car ..................................................................................................................... 20
6. Key Value for Remote Controller............................................................................................................ 27

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7. Start Programing.......................................................................................................................................... 28
7.1 Install Arduino IDE ........................................................................................................................... 28
7.2 Add Libraries...................................................................................................................................... 32
8. Bluetooth App for Android....................................................................................................................... 35
Step 1: Download and Install App..................................................................................................... 35
Step 2: Open UCTRONICS_Car_Controller software, the default is Bluetooth Mode ...... 36
Step 3: Click the top right and choose ‘Connected device‘..................................................... 36
Step 4: Select ‘CAR CONTROL MODE’............................................................................................ 37
Step 5: Search Bluetooth Device........................................................................................................ 37
Step 6: Enter control menu.................................................................................................................. 38
Step 7: Click the top right and choose ‘Change to wifi mode’................................................ 38

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1. Introduction
The UCTRONICS Smart Bluetooth Robot Car Kit is a flexible vehicular kit particularly
designed for education, competition and entertainment.
The kit has an intelligence built in so that it guides itself whenever an obstacle comes ahead
of it. An Arduino development is used to achieve the desired operation. With the help of a
small servo motor, it scans the area left and right in order to find the best way to turn. An
ultrasonic sensor unit is used to detect any obstacle ahead of it that sends a command to the
Arduino Board. Depending on the input signal received, the Arduino microcontroller
redirects the robot to move in an alternate direction by appropriately actuating the motors
interfaced to it through a motor driver IC.
When all the necessary components are getting together, a robot car comes up!
A robot is a machine that can perform some task automatically or with guidance. Robotics is
generally a combination of computational intelligence and physical machines (motors). Due
to their high level of performance and reliability, the robot get the splendid popularity in our
daily life.
Come up, let’s go into a Robot World!

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1.1 Packing list
1pcs Arduino UNO R3 Board
1pcs HC-SR04 Ultrasonic Sensor Module
1pcs Holder for HC-SR04
1pcs L293D Motor Drive Expansion Board
1pcs 9g micro servo motor
1pcs servo motor Bracket
1pcs Infrared IR Wireless Remote Control Sensor Module Kits
1pcs HC-05 Bluetooth Serial transmission Wireless Module
Some cables and pin headers as a gift
1set Car Chassis Kits:
2pcs 65mm tire Wheels
2pcs Geared Motors (1:48)
2pcs Speed Encoders
1pcs Universal Wheel
1pcs Battery Box
1pcs Car Chassis
1pcs Switch
Screws+ Nuts

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2. Assembly
2.1 Arduino Uno R3
This is the new Arduino Uno R3. In addition to all the features of the previous board, the Uno
now uses an ATmega16U2 instead of the 8U2 found on the Uno (or the FTDI found on
previous generations). This allows for faster transfer rates and more memory. No drivers
needed for Linux or Mac (.inf file for Windows is needed and included in the Arduino IDE),
and the ability to have the Uno show up as a keyboard, mouse, joystick, etc.
The Uno R3 also adds SDA and SCL pins next to the AREF. In addition, there are two new
pins placed near the RESET pin. One is the IOREF that allow the shields to adapt to the
voltage provided from the board. The other is a not connected and is reserved for future
purposes. The Uno R3 works with all existing shields but can adapt to new shields which use
these additional pins.
Note: The Arduino Uno R3 requires the Arduino 1.0 drivers folder in order to install properly
on some computers. We have tested and confirmed that the R3 can be programmed in older
versions of the IDE. However, the first time using the R3 on a new computer, you will need to
have Arduino 1.0 installed on that machine. If you are interested in reading more about the
changes to the IDE, check out the official Arduino 1.0 Release notes!
2.1.1 Specifications
Microcontroller: ATmega328
Operating Voltage: 5V
Input Voltage (recommended): 7V-12V

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Input Voltage (limits): 6V-20V
Digital I/O Pins: 14 (of which 6 provide PWM output)
Analog Input Pins: 6
DC Current per I/O Pin: 40 mA
DC Current for 3.3V Pin: 50 mA
Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader
SRAM: 2 KB (ATmega328)
EEPROM: 1 KB (ATmega328)
Clock Speed: 16 MHz
2.2 HC-SR04 Ultrasonic Sensor Module with Bracket / Holder
The HC-SR04 ultrasonic sensor module for Arduino is used for obstacle detection. Ultrasonic
sensor transmits the ultrasonic waves from its sensor head and again receives the ultrasonic
waves reflected from an object.
Ultrasonic sensor general diagram
2.2.1 Working Principle
The ultrasonic sensor emits the short and high frequency signal. These propagate in the air
at the velocity of sound. If they hit any object, then they reflect back echo signal to the

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sensor. The ultrasonic sensor consists of a multi vibrator, fixed to the base. The multi vibrator
is combination of a resonator and vibrator. The resonator delivers ultrasonic wave generated
by the vibration. The ultrasonic sensor actually consists of two parts; the emitter which
produces a 40kHz sound wave and detector detects 40 kHz sound wave and sends electrical
signal back to the microcontroller.
Ultrasonic working principle
The ultrasonic sensor enables the robot to virtually see and recognize object, avoid obstacles,
measure distance. The operating range of ultrasonic sensor is 2 cm to 450 cm.
2.2.2 Specification
Working Voltage: 5V DC
Static current: < 2mA
Output signal: Electric frequency signal
Output Voltage: 0V-5V
Sensor angle: <= 15°
Detection distance: 2-450cm
High precision: Up to 0.3cm
Input trigger signal: 10us TTL impulse
Echo signal: output TTL PWL signal
Mode of connection: VCC, trig (T), echo, GND
Using method:
(1) Supply module with 5V
(2) Output will be 5V while obstacle in range, otherwise it will be 0V
Item size: 44x20x15mm

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2.2.3 Wiring diagram:
HC-SR04 Ultrasonic Sensor Module
Arduino
VCC
5V
Trig
A2
Echo
A3
GND
GND
2.3 L293D Motor Drive Expansion Board for Arduino
This is a commonly used DC motor drive module, using L293D chip with small current DC
motor driver. The pins are made compatible with Arduino which is easy to use.
2.3.1 Specification
2 connections for 5V servos connected to the Arduino's high-resolution dedicated timer
Up to 4 bi-directional DC motors with 4 PWM speed regulation
Up to 2 stepper motor control, single / double step control, staggered or microstepping

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and rotation angle control
4 H-Bridges: L293D chipset provides 0.6A per bridge (1.2A peak) with thermal
shutdown protection, 4.5V to 36V
Pull down resistors to keep motors in the state of rest during power-up
Large terminal terminals make wiring easier (10 - 22AWG)
With Arduino reset button
The 2 terminals are connected to the external power supply terminals to ensure the
separation of the logic and the motor drive power
Voltage
DC 3V
DC 5V
DC 6V
Current
100MA
100MA
120MA
Reduction rate
48:1
RPM (with tire)
100
190
240
Tire Diameter
66mm
Car Speed (M/minute)
20
39
48
Motor Weight (g)
50
Motor Size (mm)
70x22x18mm
Noise
<65dB
2.4 SG90 9g micro small servo motor
SG90 9g micro small servo motor is the main source of controlling action of the
remote-control model. The module is widely applied in the field of fixed wing, helicopter,

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gliding, small robot, manipulator model.
2.4.1 Specification
Size: 23x12.2x29 mm
Torsional moment: 1.5kg/cm
Working voltage: 4.2V-6V
Temperature range: 0℃-55℃
Operating speed: 0.1 seconds /60°
Dead band width: 10 microseconds
2.5 2WD Driver Motor Encoder Robot Smart Car Chassis Kits
With the car platform, adding micro-controller (such as Arduino) and sensor modules, then
program it, a robot car comes up.
All the module interface has been modified with XH2.54 ports as to make it much easier and
convenient to assemble the car and reduce the chances for errors.
2.5.1 Specification

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The car is the tachometer encoder
With battery box
Gear Motor reduction radio: 48:1
Apply in distance measurement, velocity
2.6 HC-05 Bluetooth Serial transmission Wireless Module
This module is mainly used in the field of wireless transmission of data over short distances. It
can be easily connected to PC Bluetooth device and also can exchange data between two
modules. Direct serial cable replacement avoid the cumbersome cable connections.
2.6.1 Specification
Interface: VCC, GND, TXD, RXD, KEY, STATE (Note: The Pin for STATE, low output when
unconnected, high out when after the connection)
LED indicates the connection state of the Bluetooth, quick flash indicates no connection,
slow flash indicates the module enter into the AT mode, double flash indicates the
successfully connection of the Bluetooth and the open port
The bottom plate is set to an anti-reverse diode with 3.3V LDO, the input voltage
3.6-6V, unpaired current is 30mA, 10mA after pairing, the input voltage is prohibited more
than 7V
Interface level 3.3V which can be directly connected to a variety of single-chip (51, AVR,
PIC, ARM, MSP430, etc.), 5V microcontrollers can also be directly connected which can not
pass through MAX232 chip
Available to pull the 34 feet into the AT command mode setting parameters and

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searching information
Available to use AT command to switch to the host or slave mode and connect to the
specified device
Baud rate: 4800bps ~ 1382400bps
Size: 3.57x1.52cm
2.6.2 Pin definition
2.6.3 Application:
Bluetooth printers, wireless data collection, Bluetooth remote control toys, automotive
testing equipment, industrial control, telemetry, Bluetooth wireless data transmission traffic,
underground location, alarm
POS systems, wireless keyboard, mouse, automation, data acquisition systems, wireless
data transmission, the banking system, the government lights energy-saving equipment,
interactive television program, voting equipment, wireless LED display system
Bluetooth joystick, Bluetooth game controller, intelligent home, industrial control,
building automation, security, wireless monitoring and control room equipment, access
control systems

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2.7 Infrared IR Wireless Remote Control Sensor Module Kits
The wireless infrared remote controlling kits by mini ultra-thin infrared remote controller and
LF0038M infrared receiving module, mini slim infrared remote control with 17 function keys
and launch the farthest distance up to 8 meters, it is suitable for the indoor control a variety
of devices. The infrared receiving module can receive the remote control signal which is
modulated by the standard 38 KHz, and the decoding operation of the remote control signal
can be realized by programming the remote control signal.
2.7.1 Specification
Remote control:
8 address bit, 8 order bit
Carrier frequency: 38kHz
Transmission Distance: up to 8m
Sticking material: 0.125mmPET
Lift cycle: 20,000 times
LF0038M infrared receiver:
Operating voltage: 2.7V-5.5V
Receiving distance: 15m-18m
Output: TTL, CMOS level, active low
Anti-dry ability
Epoxy plastic encapsulation

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2.7.2 Dimension
Infrared receiver

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3. Pin Definition
Arduino UNO R3 Board
L293D Motor Drive Expansion Board

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4. Wiring

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5. Installation
5.1 Installation of the Components
Step 1
Step 2

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Step 3
Step 4

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5.2 Installation of the Car
Step 1: Install the deceleration DC motor to the chassis