So I don't think this issue is related necessarily to my code, because I'm thrown this error even running some formally working code examples from my textbook (Practical Python Programming for IoT):

Can't connect to pigpio at localhost(8888)

Did you start the pigpio daemon? E.g. sudo pigpiod

Did you specify the correct Pi host/port in the environment
E.g. export PIGPIO_ADDR=soft, export PIGPIO_PORT=8888

Did you specify the correct Pi host/port in the
pigpio.pi() function? E.g. pigpio.pi('soft', 8888)
Traceback (most recent call last):
  File "/home/pypi/images/test1.py", line 33, in <module>
    Device.pin_factory = PiGPIOFactory() #set gpiozero to use pigpio by default.
  File "/usr/local/lib/python3.9/dist-packages/gpiozero/pins/pigpio.py", line 126, in __init__
    raise IOError('failed to connect to %s:%s' % (host, port))
OSError: failed to connect to localhost:8888

I'm a super novice and I'm attempting to make a pseudo-robot that when you press a button, a red led will light up (to signal that it's recording) and record 5 seconds of audio. It will then take that audio, convert it to text, then run said text through DeepAi's GPT3 text generator, return the new text, and play it out a speaker with Googles TTS. I'm running a Raspberry Pi 3 with Bullseye. If anyone knows of a solution to this problem, which I believe is system based and not code based (though if you have solutions/tips for my shitty code I'd more than welcome that too), I'd greatly appreciate it.

Here's my code below:


import speech_recognition as sr
import requests
# Import the required module for text 
# to speech conversion
from gtts import gTTS 
# This module is imported so that we can 
# play the converted audio
import os

#GPIO/Pi dependcies 
#from gpiozero import Device, LED, Button                                                 # (1)
#from gpiozero.pins.pigpio import PiGPIOFactory
#import signal     

import random
import time
import wave
import io
import requests

from gpiozero import Device, LED, Button                                                 # (1)
from gpiozero.pins.pigpio import PiGPIOFactory
import signal         

#intializing pin numbers

Device.pin_factory = PiGPIOFactory() #set gpiozero to use pigpio by default.

filename = "helloWorld.wav"

# initialize the recognizer
r = sr.Recognizer()
#initialize text variable
text = ''

def pressed():

    with sr.Microphone() as source:
    # read the audio data from the default microphone
        mic_audio_data = r.record(source, duration=5)
    # convert speech to text
    micText = r.recognize_google(mic_audio_data)

    # ------------------- TEXT TO DEEP AI -------------------

    r = requests.post(
            'text': micText,
        headers={'api-key': '4588448a-9284-4401-b3cb-552695a96edc'}
    json = r.json()
    micOutput = json.get('output')

    # ------------------- TEXT TO SPEECH -------------------

    # Language in which you want to convert
    language = 'en'
    # Passing the text and language to the engine, 
    # here we have marked slow=False. Which tells 
    # the module that the converted audio should 
    # have a high speed
    myobj = gTTS(text=micOutput, lang=language, slow=False)
    # Saving the converted audio in a mp3 file named
    # welcome 
    # Playing the converted file
    os.system("mpg123 micOutput.wav")

button = Button(BUTTON_GPIO_PIN, pull_up=True, bounce_time=0.1) # Bounce time in seconds 

button.when_pressed = pressed                                                                         



  • Did you start the pigpio daemon? E.g. sudo pigpiod What OS? What does sudo ss -lntup | grep 8888 show?
    – Milliways
    Commented May 30, 2022 at 2:01
  • sudo pigpiod worked! thank you! i dunno why i decided to do such a big project outside of my wheelhouse. appreciate you <3
    – homfgomery
    Commented May 30, 2022 at 2:07
  • pigpiod is an excellent tool, but frankly not the easiest to use and sparsely documented. If using gpiozero I suggest you stick with the default pin factory (RPi.GPIO) unless you need to so something more exotic.
    – Milliways
    Commented May 30, 2022 at 2:12


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