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Kidsuno Mainboard×1 |
Joystick Module×1 |
360°Servo×1 |
Passive Buzzer×1 |
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Connection Wire×2 |
USB Cable×1 |
Lego Series×1 |
Please refer to the following link：https://kd.kidsbits.cc/KD3020
Connect the kidsuno mainboard and computer via a USB cable, and connect the joystick module to No.3 interface, passive buzzer to No.2 interface and the 360° servo to the G, V and D13 interface of the mainboard. The brown wire is connected to G, the red wire is connected to V and the orange wire is connected to D13.
Diagram of the Extension Instruction Block
Add “Joystick Module” Instruction Block
This block is used to read the analog value of the X-axis of the joystick module (range: 0~1023).
This block is used to read the analog value of the Y-axis of the joystick module (range: 0~1023).
This block is used to read the button value of the joystick module (1/0).
This block is used to refresh the value of the joystick module.
① Drag the instruction block 
in the Events module to the script area.
② Drag the instruction block 
in the Serial module to the script area and take the baud rate 9600 as an example.
③ Drag the instruction block 
in the Control module to the script area.
④ Drag the instruction blockin the **I2C Joystick Module ** module to the script area and place it into the block .
⑤ Drag the instruction block
in the Serial module to the script area, then change “Hello KidsBlock” to “X:” , warp to no-warp.
⑥ Drag the instruction block in the Serial module to the script area and place it into the block , then change warp to no-warp.
⑦ Drag the instruction blockin the I2C Joystick Module module to the script area and place it into the block 
, then change “button” to “X”.
⑧ Copy block
twice，then change “X： ” to “Y：” and “btn_val：”，and change “X” to “Y” and “button”，the no-warp behind “Button”to warp.
⑨ Drag the instruction block 
in the Control module to the script area and change the number 1 to 0.2.
⑩ Complete Program
Click
to upload the complete program to the kidsuno mainboard and power up, then click 
in the serial monitor area to set the baud rate to 9600, then the serial monitor will print the analog and digital values read by the joystick module.
In the original state, the read analog values of X and Y are about 512. When moving in the direction of the arrow, the value gradually increases, as the arrow moves in the opposite direction, the value decreases gradually. When the joystick module is not pressed, it is low level (0); when pressed, it is high level (1).
Set the 360° servo angle to 90°(won’t rotate), then read values of the joystick module, if the X value is greater than 512, the rope skipping machine jumps from back to front and the speed changes, otherwise it jumps from front to back. Press the joystick module, passive buzzer will play music, otherwise it won’t play music.
① Find building blocks
（1）
（2）
（3）
（4）
（5）
（6）
（7）
（8）
② Complete Program
Clickto upload the complete program to the kidsuno mainboard and power up, if the X value is greater than 512, the rope skipping machine jumps from back to front and the speed changes, otherwise it jumps from front to back. Press the joystick module, passive buzzer will play music, otherwise it won’t play music.
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