OpenELAB 4DOF Mechanical Arm Robot Car Learning Starter Kit

Product Link

Description

Mechanical arm, alike people’s arms, could execute a series of postures. At present, many mechanical arms can’t be operated flexibly because of the change of environment and distance.

On tackling this problem, KEYES group has launched a 3 in 1 learning kit-4DOF mechanical robotic arm car. With this kit, you could acquire how to control mechanical arm and smart car. I believe that you can’t help opening it to get started.

Features

3 in 1 Design: Smart car, mechanical arm, mechanical robot arm car Multi-purpose Function: obstacle avoidance, follow, remote control and automatic convey.

Easy to Build: Soldering circuit is not required.

High Tenacity: high performance baseplate and metal mechanical arm

High Extension: expand other sensors and modules through motor driver shield.

Multiple Controls: PS2 joypad control, fully automatic and App control(iOS and Android system)

Basic Programming：C language code learning.

Specification

Working voltage: 5v
Input voltage: 7-12V
Maximum output current: 3A
Maximum power dissipation: 25W (T=75℃)
Motor speed: 5V 63 rpm / min
Motor drive form: TB6612 drive
Ultrasonic sensing angle: <15 degrees
Ultrasonic detection distance: 2cm-400cm
Bluetooth remote control distance: 20-50 meters (measured)
Bluetooth APP control: support Android and iOS system

Component List

Model	QTY	Picture
OpenELAB V4.0 Development Board (Compatible Arduino UNO)	1
USB Cable AM/BM Blue OD:5.0 L=1m	1
HC-SR04 Ultrasonic Sensor	1
OpenELAB TB6612FNG Motor/Servo Drive Shield	1
OpenELAB Red LED Module	1
PS2 Wireless 2.4G Game Controller	1
Baseplate for Ultrasonic Sensor/Servo	1
Car BaseplateT=3.0 KS0520	1
Bearing Cap	1
15 pcs Aluminium Alloy Robot Arm Parts	1
18650 2-Slot Battery Holder with Lead	1
OpenELAB Car Wheels	2
4.5V 200rpm Motor	2
AXK Plain Bearing	1
Plain Bearing	2
Universal Wheel	1
Fixed Mount 23155MM	2
M3*30MM Round Head Screws	4
MG90S 14G Servo	4
M3*10MM Dual-pass Copper Bush	8
M3*25MM Dual-pass Copper Bush	2
M3*30MM Dual-pass Copper Bush	4
M3*6MM Round Head Nuts	26
M3*8MM Round Head Screws	21
M2.5*10MM Round Head Screws	2
M3*10MM Flat Head Screws	3
M2*8MM Round Head Screws	4
M2*12MM Round Head Screws	6
M2 Nickel Plated Nut	10
M1.2*4MM Self-tapping Round Head Screws	12
M3 Nickel Plated Nut	12
M2.5*20MM Round Head Screws	2
M2.5 Nickel Plated Self-locking Nuts	2
M3 Nickel Plated Self-locking Nuts	14
White Insulator	6
Black Ties 3*100MM	10
20cm 2.54 3pin F-F Dupont Wire Eco-friendly	2
M-F 15CM/40P/2.54/10Dupont Wire	0.25
HX-2.54 4P to Dupont Wire 26AWG 200mm	1
3*40MM Red and Black Screwdriver	1
2.0*40MM Purple and Black Screwdriver	1
M2+M3 Wrench	1
OpenELAB HM-10 Bluetooth-4.0 V3 Module	1
Winding Pipe	1
6-Slot AA Battery Holder with 15CM Lead	1
M1.4 Nickel Plated Nuts	6
M1.4*8MM Round Head Screws	6

Getting Started with Arduino

OpenELAB V4.0 Development Board

We need to know OpenELAB V4.0 development board, as a core of this smart car.

OpenELAB V4.0 development board is an Arduino uno -compatible board, which is based on ATmega328P MCU, and with a cp2102 Chip as a UART-to-USB converter.

It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, 2 ICSP headers and a reset button.

It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it via an external DC power jack (DC 7-12V) or via female headers Vin/ GND(DC 7-12V) to get started.

Microcontroller	ATmega328P-PU
Operating Voltage	5V
Input Voltage (recommended)	DC7-12V
Digital I/O Pins	14 (D0-D13) (of which 6 provide PWM output)
PWM Digital I/O Pins	6 (D3, D5, D6, D9, D10, D11)
Analog Input Pins	6 (A0-A5)
DC Current per I/O Pin	20 mA
DC Current for 3.3V Pin	50 mA
Flash Memory	32 KB (ATmega328P-PU) of which 0.5 KB used by bootloader
SRAM	2 KB (ATmega328P-PU)
EEPROM	1 KB (ATmega328P-PU)
Clock Speed	16 MHz
LED_BUILTIN	D13

Microcontroller

ATmega328P-PU

Operating Voltage

Input Voltage (recommended)

DC7-12V

Digital I/O Pins

14 (D0-D13) (of which 6 provide PWM output)

PWM Digital I/O Pins

6 (D3, D5, D6, D9, D10, D11)

Analog Input Pins

6 (A0-A5)

DC Current per I/O Pin

20 mA

DC Current for 3.3V Pin

50 mA

Flash Memory

32 KB (ATmega328P-PU) of which 0.5 KB used by bootloader

SRAM

2 KB (ATmega328P-PU)

EEPROM

1 KB (ATmega328P-PU)

Clock Speed

16 MHz

LED_BUILTIN

D13

Installing Arduino IDE

Click the link to start learning how to download software, install drivers, upload code, and install library files.

https://getting-started-with-arduino.readthedocs.io

Projects

Project 1 LED Light

（1）Description

For the starter and enthusiast, this is a fundamental program---LED Blink. LED, the abbreviation of light emitting diodes, consist of Ga, As, P, N chemical compound and so on. The LED can flash diverse colors by altering the delay time in the test code. When in control, power on GND and VCC, the LED will be on if S end is high level; nevertheless, it will go off.

（2）What You Need

（3）Specification

Control interface: digital port

Working voltage: DC 3.3-5V

Pin spacing: 2.54mm

LED display color: red

（4）Pins of Motor Driver Shield

（5）Connection Diagram：

The pin -, + and S are connected to G(GND), V(5V) and S(D6) of shield.

（6）Test Code：

/*
 OpenELAB OpenELAB 4DOF Robot Arm Car
 lesson 1.1  
 Blink
 http://www.OpenELAB.com
*/
int ledPin=6;// Define the LED pin at D6
void setup()
{
  pinMode(ledPin, OUTPUT);// initialize ledpin as an output.
}
void loop() // the loop function runs over and over again forever
{
  digitalWrite(ledPin, HIGH); // turn the LED on (HIGH is the voltage level)
  delay(1000); // wait for a second
  digitalWrite(ledPin, LOW); // turn the LED off by making the voltage LOW
  delay(1000); // wait for a second
}

（7）Test Result：

Upload the program, LED flickers with the interval of 1s.

（8）Code Explanation:

pinMode(ledPin，OUTPUT) - This function denotes that the pin is INPUT or OUTPUT.

digitalWrite(ledPin，HIGH) - When pin is OUTPUT, we can set it to HIGH(output 5V) or LOW(output 0V)

（9）Extension Practice：

We succeed to blink LED. Next, let’s observe what LED will change if we modify pins and delay time.

/*
 OpenELAB 4DOF Mechanical Robot Arm Car
 lesson 1.2
 Blink
 http://www.OpenELABcom
*/
int ledPin=6;// Define the LED pin at D6
void setup()
{
  pinMode(ledPin, OUTPUT);// initialize ledpin as an output.
}
void loop() // the loop function runs over and over again forever
{
  digitalWrite(ledPin, HIGH); // turn the LED on (HIGH is the voltage level)
  delay(100); // wait for 0.1 second
  digitalWrite(ledPin, LOW); // turn the LED off by making the voltage LOW
  delay(100); // wait for 0.1 second
}