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.
Bill of Materials
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 |
LINK |
---|---|---|
Kepler Kit |
450+ |
You can also buy them separately from the links below.
SN |
COMPONENT |
QUANTITY |
LINK |
---|---|---|---|
1 |
Raspberry Pi Pico W |
1 |
|
2 |
Micro USB Cable |
1 |
|
3 |
Breadboard |
1 |
|
4 |
Wires |
Several |
|
5 |
TA6586 |
1 |
|
6 |
TT Motor |
1 |
|
7 |
Li-po Charger Module |
1 |
|
8 |
18650 Battery |
1 |
|
9 |
Battery Holder |
1 |
Schematic
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.
Code
Note
Open the
3.5_small_fan.py
file under the path ofkepler-kit-main/micropython
or copy this code into Thonny, then click “Run Current Script” or simply press F5 to run it.Don’t forget to click on the “MicroPython (Raspberry Pi Pico)” interpreter in the bottom right corner.
For detailed tutorials, please refer to Open and Run Code Directly.
import machine
import utime
motor1A = machine.Pin(14, machine.Pin.OUT)
motor2A = machine.Pin(15, machine.Pin.OUT)
def clockwise():
motor1A.high()
motor2A.low()
def anticlockwise():
motor1A.low()
motor2A.high()
def stopMotor():
motor1A.low()
motor2A.low()
while True:
clockwise()
utime.sleep(1)
stopMotor()
utime.sleep(1)
anticlockwise()
utime.sleep(1)
stopMotor()
utime.sleep(1)
Once the program is running, the motor will rotate back and forth in a regular pattern.
Note
If the motor is still spinning after you click the Stop button, you need to reset the RUN pin on the Pico W with a wire to GND at this time, 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.