1 Introduction

Makeblock Orion is an easy-to-use mainboard based on Arduino Uno with improvements for education. It provides eight RJ25 ports to connect to all the other Me series modules with color-labels, can save you from horrible pin-wiring and help you focus on inventor amazing projects. Makeblock Orion supports most of programming software (Arduino / Scratch / ), and we offer the customized graphical programming software (Scratch for Robot / Makeblock App).

2 Features

• 100% Arduino compatible;
• Comes with Arduino library for easy programming;
• Support Scratch For Robot, cover all ages people;
• Using RJ25 cable connect the Me series electronic modules, super easy to wiring;
• Modular installation, and compatible with LEGO Bricks;
• Two-channel motor driver integrated (Two channels additional with Me-motor driver through PORT_1&2);

3 Parameters

Operating Voltage: 6-12V DC power;
Microcontroller: ATmega238;
Detecting Angle: prefer at 30 degree angle;
Dimension: 80 x 60 x 18 mm (Length x Width x Height);

4 Interface Description

There’re 8 RJ25 connectors in total. The tags on the connectors have 6 types of color. Check the following table for the function and attribute of each connector.

Tag Color	Function	Typical Me Modules
	Red represents the output voltage of Vin (6-12 VDC), which is the power input voltage. Generally, it is connected to some voltage driver module with 6-12V.	Me Motor Driver Me Servo Driver Me Stepper Driver
	One way digital interface	Me Ultrasonic Sensor Me RGB LED Me-Limit Switch
	Dual digital interface	Me 7 Segment Serial Display Me PIR Motion Sensor Me Shutter Me Line Finder Me Infrared Receiver Decode
	Hardware serial port	Me Bluetooth BLE Me Bluetooth Module(DualMode)
	Dual & one way analog interface	Me Light and Grayscale Sensor Me Potentiometer Me Joystick Me-4Button Me-Sound Sensor
	I2C port	Me 3 Axis Accelerometer and Gyro Sensor

table 1 : The function of each tag color

Yellow, blue, gray, black, purple and white represent the output voltage of Vcc (5VDC), which is the Stable output voltage. Generally, it is connected to some voltage driver module with 5V.

PORT NO.	Tag Color	Compatible Module Types	Typical Me Modules
1 & 2		(6-12VDC) driven modules	Me Motor Driver Me Servo Driver Me Stepper Driver
3 & 4		One way digital interface Dual digital interface I2C port	Me Ultrasonic Sensor Me RGB LED Me Limit Switch Me 7 Segment Serial Display Me PIR Motion Sensor Me Shutter Me Line Finder Me Infrared Receiver Decode Me 3 Axis Accelerometer and Gyro Sensor
5		Hardware serial port	Me Bluetooth Me Bluetooth Module(DualMode)
6		One way digital interface Dual digital interface I2C port Dual & one way analog interface	Me Ultrasonic Sensor Me RGB LED Me Limit Switch Me 7 Segment Serial Display Me PIR Motion Sensor Me Shutter Me Line Finder Me Infrared Receiver Decode Me 3 Axis Accelerometer and Gyro Sensor Me Light and Grayscale Sensor Me Potentiometer Me Joystick Me 4Button Me Sound Sensor
7 & 8		One way digital interface Dual & one way analog interface I2C port	Me Ultrasonic Sensor Me RGB LED Me Limit Switch Me Light and Grayscale Sensor Me Potentiometer Me Joystick Me 4Button Me Sound Sensor Me 3 Axis Accelerometer and Gyro Sensor

table 2 : Connectors’ function and attribute

You can also check the entire information on the back side of the PCB.

5 Usage

1. Connect the Makeblock Orion and computer with micro-USB cable first. The first time you use Makeblock Orion ,you need to install the USB interface driver.

2. Makeblock Orion support up-computer and mobile device control.(Arduino IDE/Scratch For Robot/Makeblock App control).
   The programming guide link of each software is as follow:
   (1) Arduino IDE: http://learn./learning-Arduino
   (2) Scratch For Robot: http://learn./learning-scratch
   (3) Makeblock App: http://app.

6 Programming Guide

1. Here’s an example to show you how to programming the buzzer of Orion in Arduino IDE:
A) Connect the Makeblock Orion and computer with micro-USB cable first.
B) Create a file in Aduino IDE, and write the buzzer control sketch as follow:

#include 
#include 
#include 
 
void setup()
{
}
 
void loop()
{
    buzzerOn();  //turn on the buzzer
    delay(50);   // wait 50 milliseconds
    buzzerOff(); //turn off the buzzer
    delay(50);
}

If you got any error information, please check if there is a grammar mistake in your code.

C) Upload the program
D) After the uploading is successful, the buzzer will sound. If it doesn’t work, please check if the buzzer switch on the board is TURN ON.

#include 
#include 
#include 
 
MeDCMotor motor1(M1);    //130 DC Motor can connect to the motor interface(M1 or M2)
 
uint8_t motorSpeed = 100;   // value: between -255 and 255.
 
void setup()
{
 
}
 
void loop()
{
    motor1.run(motorSpeed);
    delay(2000);
    motor1.stop();
    delay(100);
    motor1.run(-motorSpeed);
    delay(2000);
    motor1.stop();
    delay(100);
}

If you got any error information, please check if there is a grammar mistake in your code.

D) Upload the program
E) After the uploading is successful, you can see the motor rotating in clockwise direction 2s, pause 100ms, rotating in anticlockwise direction 2s, pause 100ms.

3. Other Demo Code
There are some demo code of the Me series electronic modules from the File > Examples > MakeBlockDrive. You can use the demo code from Makeblock Library New or Makeblock Library Old to get started play the Me series electronic modules. We recommend that you use the latest code to get our best service support.

7 Power supply

Kindly advise to power the board by connecting 6V-12VDC to DC Connector of Makeblock Orion. Otherwise it will power off for PORT 1 and 2. There’s a switch on the board for controlling the power ON/OFF.

8 Reference link

Makeblock:
(1) Makeblock Official Web Site: http://www.
(2) Makeblock Community: http://forum.

Makeblock Orion
(1) Makeblock Orion Schematic download link: Download

Makeblock Library:
(1) Makeblock Library download link:
https://codeload.github.com/Makeblock-official/Makeblock-Libraries/zip/master
(2) Makeblock Library user guide link: http://learn./learning-Arduino

Scratch For Robot:
(1) Scratch For Robot download link: http://www./download
(2) Scratch For Robot user guide link: http://learn./learning-scratch

Makeblock App:
(1) APP user guide link: http://app.