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The OSOYOO building bricks is mechanically compatible with leading building bricks. In this lesson, we will use OSOYOO Bricks to build a robot crab which can use its eyes(Ultrasonic Sensor) to detect objects and use pincers(finger servo) to catch object.

  1. A laptop or Desktop PC which runs Windows or Mac computer
  2. OSOYOO Magic I/O Shield for Arduino x1
  3. OSOYOO DC Motor Module
  4. OSOYOO Ultrasonic Sensor Module
  5. OSOYOO Brick Servo
  6. OSOYOO Bricks

Building Blocks:

Wire Connections:

Firstly, please plug Osoyoo Magic I/O shield into UNO board as following:

Secondly, Connect wires as per following picture:
Arm Motor to L1
Finger Servo to D9 port
IN1 to D12
IN2 to D11
ENA to D5

The Ultrasonic Sensor connects to following port:

Finally, use the USB cable to connect your PC to the OSOYOO UNO board

Step 1) Download mBlock PC, select the download file as per your computer OS type:

Step 2)Download OSOYOO_UNO.mext device file from

Step 3) Run the mBlock PC software by double click the lovely Panda icon. you will see mBlock UI as following picture. Please delete the default device CyberPi by click the cross in the red circle.

Step 4: Drag and Drop osoyoo_uno_mext file(downloaded in Step 2) to mBlock software as following:

Now you will see a new device firmware in mBlock, see following picture:

Now mBlock software and OSOYOO_UNO device firmware have been successfully installed in our PC!

Now we will show you how to use blocks to make our Oscillating Pedestal Fan into reality.
Step 1: Click Control, then Drag and drop Forever block to programming area as following:

Step 2: Click Events, add when Arduino Uno starts up block to the top:



Upload the program to Arduino










1)you need connect your Arduino board to your PC with a USB cable first. Then click the Connect button in the bottom of the mBlock software, you will see a USB window pop up,
2) select Show all connectable device check box , then a device drop-down menu will show up,
3) select your Arduino port from device drop-down menu
4) click Connect button to connect your PC to Arduino

5)After you PC is connected to Arduino UNO board, please click Upload button in the bottom of your software, then the code will be uploaded to Arduino UNO board:

Now turn on the power switch in the Magic board, the Arduino will start to work. Press the button on D2, your fan begins to rotate and servo start to oscillate. When you release the button, fan and servo will stop moving.