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raspberrypiでLチカをやってみる

Last updated at Posted at 2016-10-02

必要なもの

  • LED(発光ダイオード)
  • 抵抗(1kΩ)
  • ジャンパー線(オス―メス)
  • ブレッドボード
  • raspberrypi 3 一式

配線する

GPIOのピン番号についてはこちらを参照

  • raspberrypi3のGPIO23番ピン → LEDのアノード(足が長い方)
  • LEDのカソード(足の短い方) → 抵抗
  • 抵抗 → GND

Lチカ.jpg

Pythonでプログラムを組む

  • wiringpiをインストールする。
pip install wiringpi
  • 下記プログラムを作成し実行する。
led_test.py
import wiringpi
import time

out_pin = 23

wiringpi.wiringPiSetupGpio()
wiringpi.pinMode(out_pin, wiringpi.OUTPUT)

for i in range(0, 5):
    wiringpi.digitalWrite(out_pin, 1)
    time.sleep(1)
    wiringpi.digitalWrite(out_pin, 0)
    time.sleep(1)
  • 10秒間LEDが点滅すれば成功です。

#参考
raspberrypi3 のGPIO HEADER
WiringPi 関数メモ

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