HOW to Achieve Light Adjustment with Kidspico

Flow

Assembly

Required:

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Completed!

Wiring Diagram

Test Code

Open 4.3Brightness_adjustment.py and click.

'''
 * Filename    : Brightness_adjustment
 * Thonny      : Thonny 4.1.4
 * Auther      : http//www.keyestudio.com
'''
from machine import Pin,ADC,PWM
import time

RP = ADC(26)
led = PWM(Pin(11))
led.freq(1000)

while True:
    RP_Value = RP.read_u16()
    print('ADC Value:',RP_Value)
    led.duty_u16(RP_Value)
    time.sleep(0.1)

Explanation

1. from machine import Pin,ADC,PWM

   import PIN, ADC, PWM module.

2. led = PWM(Pin(11))

   a PWM function whose PWM output pin is io11.

3. led.freq(1000)

Set PWM output frequency to 1000Hz.

4. led.duty_u16(RP_Value)

   Set duty cycle, set the value output by the potentiometer to the duty cycle of the white LED module.

Conceive:

1. Initialization: set the pins of potentiometer and white LED module, set the output frequency of the LED module.

2. Loop:

   ① Read the ADC value of potentiometer, and print it on Shell.

   ② Set the value as the duty cycle of white LED module, so that the potentiometer controls the brightness of LED.