Tim Mikkelsen's Raspberry Pi Projects

2016/06 RPi Python web LED

Description:

This project was to turn off and on an LED via the web.

A few comments:

1. This was not done with any sort of fancy web UI:

     - to turn the LED on, enter the URL 10.0.1.7:1234/ledon in a web browser

     - to turn the LED off, enter the URL 10.0.1.7:1234/ledoff in a web browser

2. The tools on the Raspberry Pi are IDLE and Python 2.7.

Software:

- NOOB software for the Raspberry Pi

- netatalk for the Raspberry Pi

- afpd.service for the Raspberry Pi

- IDLE on the Raspberry Pi

- Python 2.7 on the Raspberry Pi

- PyCharm for the Mac

Hardware:

- Raspberry Pi

- 330 ohm resistor

- LED

- another device with a web browser on your network

webled.py code:

import socket

import sys

import RPi.GPIO as GPIO

mysock=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

GPIO.setmode(GPIO.BCM)

GPIO.setwarnings(False)

GPIO.setup(18,GPIO.OUT)

try:

    mysock.bind(("",1234))

except socket.error:

    print("failed to bind")

    sys.exit()

mysock.listen(4)

while True:

    conn, addr = mysock.accept()

    data = conn.recv(1000)

    print(data)

    if not data:

        break

    if 'ledon' in data:

        print("LED on")

        GPIO.output(18,GPIO.HIGH)

    if 'ledoff' in data:

        print("LED off")

        GPIO.output(18,GPIO.LOW)

    conn.sendall(data)

conn.close()

mysock.close()