Freenove Raspberry pi スターターキット LED barチカ gpiozero Python3

アマゾンで見る

配線

LEDbar(27, 22, 5, 6,13, 19, 26, 21, 20, 16)
赤led (18)
緑led (23)

前button(4, hold_time=0.5)
後button (12, hold_time=0.5)

プログラム

Raspberry pi OS 電源スイッチ取付 はんだ付け無し gpiozero Python3 systemd

わしは、/home/pi/projects/led_barに作った。

• cd /home/pi/projects
• mkdir led_bar
• cd led_bar
• nano flow.py

from gpiozero import LEDBoard
from gpiozero import LED
from time import sleep
from signal import pause
from gpiozero import Button

def fw():
    for led in leds:
        fw_p()
        sleep(0.2)

def rv():
    for led in reversed(leds):
        rv_p()
        sleep(0.2)

def fw_p():
   global led_p
   g_led.on()
   r_led.off()
   led = leds[led_p]
   led.off()
   led_p = led_p + 1
   if led_p > len(leds)-1:
        led_p = 0
   led = leds[led_p]
   led.on()

def rv_p():
   global led_p
   r_led.on()
   g_led.off()
   led = leds[led_p]
   led.off()
   led_p = led_p - 1
   if led_p < 0:
         led_p = len(leds)-1
   led = leds[led_p]
   led.on()


leds = LEDBoard(27, 22, 5, 6,13, 19, 26, 21, 20, 16)
r_led = LED(18)
g_led = LED(23)

fw_button = Button(4, hold_time=0.5)
rv_button = Button(12, hold_time=0.5)

led_p = 0
led = leds[led_p]
led.on()

fw_button.when_held = fw
rv_button.when_held = rv
fw_button.when_pressed = fw_p
rv_button.when_pressed = rv_p

pause()

ctrl+zで保存

実行

• python3 flow.py

停止

ctrl+c

動作の様子

以上！

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raspberry pi ピン確認 pinout インストール

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