HOW to Build a Smart Trash Can (Manual Mode) with KidsIOT

Flow

Assembly

Required:

Step 1

Step 2

Step 3

Step 4

① Hold the lid still to make it align with the hole.

② Insert the rod.

ATTENTION: Keep the lid flatwise.

Step 5

Step 6

Step 7

Step 8

Step 9

Step 10

The servo need to be calibrated before using. Connect the servo to pin io33 on the board and link the board to computer via USB cable.

Open KidsBlock and click File –> Load from your computer.

Open D:\Code\2.Code_kidsIOT and choose Servo_Calibration.sb3.

Click  to connect to the port and then .

After calibration, disconnect the board to computer and continue to mount.

ATTENTION: During mounting, please hold and keep the lid flatwise.

Step 11

Step 12

Completed!

Wiring Diagram

Test Code

Open KidsBlock and connect to the board, click File –> Load from your computer.

Choose D:\Code\2.Code_kidsIOT to open 4.4Smart bin_Manual mode.sb3

Click  to connect to the port and then  the code.

Explanation

Code Blocks

Conceive:

1. Initialization

   Set the servo pin and baud rate.

   

2. Main Code

   Loop: read the value of joystick in y-axis and refresh it every 0.1 seconds, and print it on serial monitor.

   If the value in y-axis is less than 490, set the servo to 45°. If not, set the servo to 180° so then the lid will be closed.

   

   
   

   Conceive:

   ① Build blocks as follows: Read the value of joystick in y-axis and refresh it every 0.1 seconds.

   

   ② Put the following code blocks in “forever”.

   

   Determine whether the value in y-axis is less than 490.

   • If yes: set the servo to 45° to open the lid.

   • If not: set the servo to 180° to close the lid.