HOW to Make A Fan with Temperature Detection Function by KidsIOT

Flow

Assembly

Required Components

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step7

Completed

Wiring Diagram

Test Code

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

Choose path D:\Code\2.Code_kidsIOT and open 4.1Temperature detection.sb3.

Click  to connect to port and then .

Q ：After uploading the code, with temperature rises, the fan starts to work, yet the monitor stops outputting temperature values, with a prompt reading:

A ：The power supply may be insufficient, so an external power supply may be required.

Explanations

Code Blocks

Build blocks:

Click  to import libraries 18b20 and DC Motor for esp32.

1. Initialization

   Initialize the serial monitor.

   

2. Main Code

   Loop: DS18B20 sensor reads the temperature values and the serial monitor prints them. Then, it determines whether the value is greater than 30°C(this threshold is adjustable).

   • Temperature > 30: fan rotates to cool down.

   • Temperature < = 30: fan stops working.