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3.5 - Small Fan

Now we use the TA6586 to drive the DC motor to make it rotate clockwise and counterclockwise. Since the DC motor requires a relatively large current, for safety reasons, here we use a power module to supply power to the motor.

Required Components

In this project, we need the following components.

It’s definitely convenient to buy a whole kit, here’s the link:

Name

ITEMS IN THIS KIT

PURCHASE LINK

Kepler Kit

450+

Kepler Kit

You can also buy them separately from the links below.

SN

COMPONENT INTRODUCTION

QUANTITY

PURCHASE LINK

1

Raspberry Pi Pico W

1

BUY

2

Micro USB Cable

1

3

Breadboard

1

BUY

4

Jumper Wires

Several

BUY

5

TA6586 - Motor Driver Chip

1

6

DC Motor

1

BUY

7

Li-po Charger Module

1

8

18650 Battery

1

9

Battery Holder

1

Schematic

sch_motor

Wiring

Note

  • Since DC motors require a high current, we use a Li-po Charger module to power the motor here for safety reasons.

  • Make sure your Li-po Charger Module is connected as shown in the diagram. Otherwise, a short circuit will likely damage your battery and circuitry.

wiring_motor

Code

Note

  • You can open the file 3.5_small_fan.ino under the path of kepler-kit-main/arduino/3.5_small_fan.

  • Or copy this code into Arduino IDE.

  • Don’t forget to select the board(Raspberry Pi Pico) and the correct port before clicking the Upload button.

Once the program is running, the motor will rotate back and forth in a regular pattern.

Note

  • If you can not upload the code again, this time you need to connect the RUN pin on the Pico W with a wire to GND to reset it, and then unplug this wire to run the code again.

  • This is because the motor is operating with too much current, which may cause the Pico W to disconnect from the computer.

wiring_run_reset