The Code

The Code Thus Far...

Jan 8th Update

Added a camera, and therefore some more code. It now tests for a file size before it tries to upload to Twitter.

import requests

from time import sleep

from subprocess import call

import RPi.GPIO as GPIO

import twitter

from picamera import PiCamera

import os

def tell_joke():

    try:

        # Toggle red light

        GPIO.setup(red,GPIO.OUT,initial=GPIO.HIGH)

        # Setup variables

        voice_api_key = 'XXXXXXXXXXXXXXXXXXXXXXXXXX' #insert your key here.

        joke_api_url = 'https://icanhazdadjoke.com/'

        headers = {'user-agent': 'twitter.com/tellafunny','Accept': 'application/json'}

        # Get joke from API and assign it to a variable

        r = requests.get(joke_api_url,headers=headers)

        joke = r.json()['joke']

        # Send joke to Voice RSS

        payload = {'key': voice_api_key, 'f': '44khz_16bit_mono', 'hl': 'en-us', 'c': 'WAV', 'src': joke }

        v = requests.get('https://api.voicerss.org',params=payload)

        # Creating wav file.

        f = open('/home/pi/Documents/response.wav','wb')

        f.write(v.content)

        f.close

        # Turn off red light

        GPIO.setup(red,GPIO.OUT,initial=GPIO.LOW)

        GPIO.setup(blue,GPIO.OUT,initial=GPIO.HIGH)

        # Start recording

        camera.start_recording('/home/pi/Documents/reaction_video.h264')

        print('Started recording')

        # Play joke

        call(['aplay','/home/pi/Documents/response.wav'])

        # End recording

        camera.wait_recording(7)

        camera.stop_recording()

        # Wrap video in MP4

        call(['chmod', '755', '/home/pi/Documents/reaction_video.h264'])

        call(['MP4Box', '-add', '/home/pi/Documents/reaction_video.h264', '/home/pi/Documents/video.mp4'])

        call(['chmod', '755', '/home/pi/Documents/video.mp4'])

        # Get file size

        statinfo = os.stat('/home/pi/Documents/video.mp4')

        if statinfo.st_size < 15000000:

            # Tweet joke and reaction

            video = open('/home/pi/Documents/video.mp4','rb')

            api.PostUpdate(status=joke,media=video)

        else:

            print('Video to large to upload.')

        # Delete files

        call(['rm', '/home/pi/Documents/reaction_video.h264'])

        call(['rm', '/home/pi/Documents/video.mp4'])

        # Toggle Lights

        GPIO.setup(red,GPIO.OUT,initial=GPIO.LOW)

        GPIO.setup(blue,GPIO.OUT,initial=GPIO.LOW)

    except:

        print('Something broke.')

        GPIO.cleanup()

        # Delete files

        call(['rm', '/home/pi/Documents/reaction_video.h264'])

        call(['rm', '/home/pi/Documents/video.mp4'])

# Setup GPIO Mode

GPIO.setmode(GPIO.BCM)

# Setup Camera

camera = PiCamera()

camera.rotation = 180

camera.resolution = (640,480)

# Assign color names and variables

green=17

blue=27

red=22

button=25

# Assign Twitter variables.

APP_KEY = 'XXXXXXXXXXXXXXXXXXXXXXXXXX' # I will write up how to do this when I am done.

APP_SECRET = 'XXXXXXXXXXXXXXXXXXXXXXXXXX'

OAUTH_TOKEN = 'XXXXXXXXXXXXXXXXXXXXXXXXXX'

OAUTH_TOKEN_SECRET = 'XXXXXXXXXXXXXXXXXXXXXXXXXX'

# Create Twitter object

api = twitter.Api(consumer_key=APP_KEY,consumer_secret=APP_SECRET,access_token_key=OAUTH_TOKEN,access_token_secret=OAUTH_TOKEN_SECRET)

# Set green light on indicating that everything is ready

GPIO.setup(green,GPIO.OUT,initial=GPIO.HIGH)

GPIO.setup(blue,GPIO.OUT,initial=GPIO.LOW)

GPIO.setup(red,GPIO.OUT,initial=GPIO.LOW)

GPIO.setup(button,GPIO.IN,pull_up_down=GPIO.PUD_UP)

print('Tellafunny Running.')

try:

    while True:

        if GPIO.input(button)==0:

            GPIO.setup(green,GPIO.OUT,initial=GPIO.LOW)

            print('Getting joke.')

            tell_joke()

            print('Har har!')

            GPIO.setup(green,GPIO.OUT,initial=GPIO.HIGH)

            sleep(.2)

finally:

    GPIO.cleanup()

First Attempt!

This is my first foray into Python. So far, I love it. Learning and playing with the code has been very natural. There were a few quirks to work through, but eventually I made them all work in an acceptable answer.

Some of the tools I am using:

icanhazdadjoke.com - What a great website, I looked for a while to try to find a joke API, that wasn't raunchy and still just funny enough. This website perfectly fits the bill.
VoiceRSS.org - Also, there were loads of options for sending text to a service and getting it back read to you. I looked a little bit at Amazon Polly as well as sending it through Google's Translate services. In the end Voice RSS was priced right (free) and did the job great and was super easy to configure and setup.

The code below starts a green light to let you know that the program is running. Then when you press a button on the breadboard, a light turns red to let you know that it the program is getting a joke and putting it to voice. The light turns blue while it tells you joke, and then when it is done, back to green the light goes.

I still need to get a camera, and post the video to Twitter, but I think the code for those functions will likely be pretty straight forward.

import requests

from time import sleep

from subprocess import call

import RPi.GPIO as GPIO

def tell_joke():

    # Toggle red light

    GPIO.setup(red,GPIO.OUT,initial=GPIO.HIGH)

    # Setup variables

    voice_api_key = 'XXXXXXXXXXXXXXXXXXXXXXXXXXX' # Your key from Voice RSS would go here.

    joke_api_url = 'https://icanhazdadjoke.com/'

    headers = {'user-agent': 'twitter.com/tellafunny','Accept': 'application/json'}

    # Get joke from API and assign it to a variable

    r = requests.get(joke_api_url,headers=headers)

    joke = r.json()['joke']

    # Send joke to Voice RSS

    payload = {'key': voice_api_key, 'f': '44khz_16bit_mono', 'hl': 'en-us', 'c': 'WAV', 'src': joke }

    v = requests.get('https://api.voicerss.org',params=payload)

    # Creating wav file.

    f = open('/home/pi/Documents/response.wav','wb')

    f.write(v.content)

    f.close

    # Turn off red light

    GPIO.setup(red,GPIO.OUT,initial=GPIO.LOW)

    GPIO.setup(blue,GPIO.OUT,initial=GPIO.HIGH)

    # Play joke

    call(['aplay','/home/pi/Documents/response.wav'])

    # Toggle Lights

    GPIO.setup(red,GPIO.OUT,initial=GPIO.LOW)

    GPIO.setup(blue,GPIO.OUT,initial=GPIO.LOW)

# Setup GPIO Mode

GPIO.setmode(GPIO.BCM)

# Assign color names and variables

green=17

blue=27

red=22

button=25

# Set green light on indicating that everything is ready

GPIO.setup(green,GPIO.OUT,initial=GPIO.HIGH)

GPIO.setup(blue,GPIO.OUT,initial=GPIO.LOW)

GPIO.setup(red,GPIO.OUT,initial=GPIO.LOW)

GPIO.setup(button,GPIO.IN,pull_up_down=GPIO.PUD_UP)

print('Tellafunny Running.')

try:

    while True:

        if GPIO.input(button)==0:

            GPIO.setup(green,GPIO.OUT,initial=GPIO.LOW)

            print('Getting joke.')

            tell_joke()

            print('Har har!')

            GPIO.setup(green,GPIO.OUT,initial=GPIO.HIGH)

            sleep(.2)

finally:

    GPIO.cleanup()

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